CN115897598B - A construction method and technique for pre-filling fertilizer trenches in reverse construction - Google Patents
A construction method and technique for pre-filling fertilizer trenches in reverse constructionInfo
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- CN115897598B CN115897598B CN202211382413.1A CN202211382413A CN115897598B CN 115897598 B CN115897598 B CN 115897598B CN 202211382413 A CN202211382413 A CN 202211382413A CN 115897598 B CN115897598 B CN 115897598B
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Abstract
本发明公开了一种用于逆作法肥槽提前回填的构造及方法，所述构造包括上肋墙固定构造，所述上肋墙固定构造上的基坑围护结构与地下室外墙之间设置有上肋墙，且上肋墙的表面固定设置有暗梁，同时上肋墙的底部是连接板，并且连接板端部与腰梁固定连接，腰梁的底部通过下斜撑进行支撑。本发明通过在地下室外墙和基坑围护结构之间设置上肋墙和下斜撑，使得连接板、腰梁、地下室外墙、上肋墙和下斜撑共同组成受力体系，使得回填土的重力荷载可以通过该体系传递至基坑围护结构，从而实现肥槽提前回填。
This invention discloses a structure and method for early backfilling of excavation trenches using the reverse construction method. The structure includes an upper rib wall fixing structure. An upper rib wall is provided between the foundation pit retaining structure and the basement exterior wall on the upper rib wall fixing structure. A hidden beam is fixedly installed on the surface of the upper rib wall. Simultaneously, a connecting plate is located at the bottom of the upper rib wall, and the end of the connecting plate is fixedly connected to a wainscoting beam. The bottom of the wainscoting beam is supported by a lower diagonal brace. This invention, by setting an upper rib wall and a lower diagonal brace between the basement exterior wall and the foundation pit retaining structure, allows the connecting plate, wainscoting beam, basement exterior wall, upper rib wall, and lower diagonal brace to form a load-bearing system. This system allows the gravity load of the backfill soil to be transferred to the foundation pit retaining structure, thereby achieving early backfilling of the excavation trench.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a structure and a method for backfilling a top-down fertilizer tank in advance.
Background
When the basement is constructed by the reverse construction method, piles and upright posts are firstly constructed, then beams and plate structures of each floor are sequentially constructed from top to bottom, the beam plate structures are connected with the building envelope through connecting plates, soil pressure is resisted together with the building envelope, and soil in a foundation pit is excavated from top to bottom along with the construction progress. After the bottom plate is finished, the outer wall and the waterproof of each floor are sequentially finished from bottom to top, and then the foundation pit fertilizer groove is backfilled.
Because the outdoor pipelines may be positioned in the fertilizer tank, and the outdoor roads may also be positioned on the fertilizer tank, the foundation pit fertilizer tank needs to be backfilled before the outdoor pipelines and roads are constructed. In the conventional reverse construction method, the foundation pit backfilling is required to be performed after all the outer walls and waterproof construction are completed, namely, when the outer wall construction of the basement with partial floors is not completed, the fertilizer tank cannot be backfilled in advance, which causes the overall construction progress of the outdoor pipelines, the outdoor roads and the like to be lagged.
Disclosure of Invention
The invention aims to overcome the defects in the background art, and by arranging the upper rib wall and the lower diagonal brace between the B1 outer wall and the waterproof foundation pit support structure, the second connecting plate, the waist beam, the B1 outer wall and the waterproof foundation pit support structure together form a stress system, so that the gravity load of backfill soil can be transferred to the foundation pit support structure through the system, and the advanced backfill of a fertilizer tank is realized.
In order to achieve the above purpose, in a first aspect, the invention provides a construction for backfilling a top-down construction fertilizer tank in advance, which comprises an upper rib wall fixing structure, wherein an upper rib wall is arranged between a foundation pit support structure and a B1 outer wall and between the upper rib wall fixing structure and water resistance, a hidden beam is fixedly arranged on the surface of the upper rib wall, meanwhile, the bottom of the upper rib wall is a connecting plate, the end part of a second connecting plate is fixedly connected with a waist beam, the bottom of the waist beam is supported by a lower diagonal bracing, the foundation pit support structure, a steel upright post and an engineering pile are arranged on a construction foundation pit, the surface of first leather soil is covered with a first connecting plate, the first connecting plate is installed together with a basement top plate, the end part of the first connecting plate is a first waist beam, the surface of the second leather soil is covered with a second connecting plate, the second connecting plate is installed together with the basement B1 plate, the end part of the second connecting plate is a second waist beam, the bottom of the second road beam is provided with a lower diagonal bracing, and simultaneously, the B1 outer wall and the left side is provided with a fertilizer tank.
Further, the upper rib wall fixing structure comprises a foundation pit support structure, a hidden beam, a B1 outer wall, a waterproof upper rib wall, a second connecting plate, a waist beam and a lower diagonal brace, and the hidden beam and the upper end surface of the upper rib wall are obliquely arranged.
Further, the section of the lower diagonal brace is a right triangle, and the bottoms of the second connecting plate and the waist beam are supported by the lower diagonal brace.
Further, the bottom of the basement B1 plate is provided with second leather soil, and the B1 outer wall and the waterproof basement B1 plate are vertically arranged.
Further, the positions of the upper rib wall and the lower diagonal bracing are in one-to-one correspondence with the B1 outer wall and the waterproof steel upright post, a concrete recharging hole is formed in the second connecting plate, and a B2 fertilizer groove is formed in the bottom of the lower diagonal bracing for pouring concrete.
Further, a concrete conduit is arranged in the concrete recharging hole, and the outer side of the concrete conduit is filled by using a fertilizer slot backfilling structure.
Further, the basement roof is covered with third leather soil, the inside of the third leather soil is provided with a B2 outer wall and waterproof, and meanwhile, the B2 outer wall and the waterproof left side are provided with a B2 fertilizer groove.
The invention provides a method for backfilling a top-down construction method fertilizer groove in advance, which comprises the following steps of (1) constructing a foundation pit enclosure structure, engineering piles and steel columns, (2) digging first skin soil, constructing a first waist beam, a first connecting plate and a basement top plate, (3) digging second skin soil, constructing a second waist beam, a second connecting plate, a basement B1 plate, an upper rib wall and a lower diagonal brace, (4) installing a concrete guide pipe in a concrete recharging hole, backfilling the fertilizer groove above the elevation of the B1 plate, (5) digging third skin soil, constructing a basement bottom plate, a B2 outer wall and waterproofing, and (6) pouring the fertilizer groove between the B2 outer wall and the foundation pit enclosure structure through the concrete guide pipe.
Compared with the prior art, the invention has the beneficial effects that:
The construction method has the advantages that a stress system is formed by the connecting plate, the waist beam, the B1 outer wall, the waterproof upper rib wall and the lower diagonal brace together, so that gravity load of backfill soil can be transferred to the foundation pit support structure through the system, the advanced backfill of the fertilizer tank is realized, the problem that the fertilizer tank cannot be backfilled in advance when the construction of the outer wall of a part of floors of a basement is incomplete is solved, conditions are created for the advanced construction of outdoor pipelines and roads, the construction period can be shortened, meanwhile, the interior and the exterior of a foundation pit can be communicated, and materials are more convenient to transport and stack.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the construction of the present invention;
FIG. 2 is a schematic view of section A-A of FIG. 1;
FIG. 3 is a schematic view of an upper rib wall, a second web in accordance with one embodiment of the present invention;
FIG. 4 is a schematic view in section B-B of FIG. 3;
FIG. 5 is a schematic diagram of a construction step A in one embodiment of the method of the present invention;
FIG. 6 is a schematic diagram of a construction step B in one embodiment of the method of the present invention;
FIG. 7 is a schematic diagram of a construction step C in one embodiment of the method of the present invention;
FIG. 8 is a schematic diagram of a construction step D in one embodiment of the method of the present invention;
FIG. 9 is a schematic diagram of a construction step E in one embodiment of the method of the present invention;
fig. 10 is a schematic diagram of a construction step F in one embodiment of the method of the present invention.
In the figure, 1, a foundation pit enclosure structure, 2, a hidden beam, 4, an upper rib wall, 7, a lower diagonal brace, 8, an upper rib wall fixing structure, 10, a steel upright post, 11, an engineering pile, 12, a first waist beam, 13, a first connecting plate, 14, first skin soil, 15, a basement roof, 16, a B2 fertilizer groove pouring concrete, 17, a concrete recharging hole, 18, a second connecting plate, 19, a second waist beam, 21, a fertilizer groove, 22, a B1 outer wall and waterproofing, 23, a basement B1 plate, 24, second skin soil, 25, a concrete conduit, 26, a fertilizer groove backfilling structure, 27, a B2 outer wall and waterproofing, 28, third skin soil, 29, and a B2 fertilizer groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-10, one embodiment of the construction for pre-backfilling a top-down construction fertilizer tank comprises an upper rib wall fixing structure 8, wherein an upper rib wall 4 is arranged between a foundation pit enclosure 1 and an outer wall of a basement roof 15 on the upper rib wall fixing structure 8 and a waterproof 22, a hidden beam 2 is fixedly arranged on the surface of the upper rib wall 4, meanwhile, the bottom of the upper rib wall 4 is a second channel connecting plate 18, the end part of the second channel connecting plate 18 is fixedly connected with a second channel waist beam 19, the bottom of the second channel waist beam 19 is supported by a lower diagonal bracing 7, the foundation pit enclosure 1, a steel upright post 10 and an engineering pile 11 are arranged on a construction foundation pit, the surface of a first skin soil 14 is covered with a first channel connecting plate 13, the first channel connecting plate 13 is mounted with the basement roof 15, the end part of the first channel connecting plate 13 is a first channel waist beam 12, the surface of a second skin soil 24 is covered with a second channel connecting plate 18, the second channel connecting plate 18 is mounted with the basement B1 plate 23, the end part of the second channel connecting plate 18 is a second channel waist beam 19, and the bottom of the second channel waist beam 19 is provided with a waterproof layer 21 and the left side 21 is provided with a bottom-down diagonal bracing 7.
The working principle is that the upper rib wall 4 and the lower diagonal brace 7 are arranged between the B1 outer wall and the waterproof 22 and the foundation pit support structure 1, so that a stress system is formed by the second connecting plate 18, the second waist beam 19, the B1 outer wall and the waterproof 22, the upper rib wall 4 and the lower diagonal brace 7 together, the gravity load of backfill soil can be transferred to the foundation pit support structure 1 through the stress system, the problem that the fertilizer tank 21 is backfilled in advance is solved, the problem that the fertilizer tank cannot be backfilled in advance when the construction of the outer wall of a part of floors of a basement is not completed is solved, conditions are created for the construction of outdoor pipelines and roads in advance, the construction period can be reduced, meanwhile, the inside and the outside of the foundation pit can be communicated, the material transportation and the stacking are more convenient, and the construction method is specifically included.
As a preferred embodiment, the upper rib wall fixing structure 8 includes a foundation pit enclosure 1, a hidden beam 2, a B1 outer wall, a waterproof 3, an upper rib wall 4, a second connecting plate 18, a second waist beam 19 and a lower diagonal brace 7, and the upper end surfaces of the hidden beam 2 and the upper rib wall 4 are all inclined.
As shown in fig. 1-2, the upper rib wall 4 is located between the foundation pit enclosure 1 and the outer wall of the foundation pit and the waterproof 22 on the upper portion of the basement B1 plate 23, and the outer wall of the foundation pit and the waterproof 22 are tied together, so that on one hand, the span of the outer wall of the foundation pit and the waterproof 22 is reduced, the soil pressure resistance is increased, and on the other hand, the connection between the second connecting plate 18 and the foundation pit enclosure 1 is enhanced, and the second connecting plate 18 can bear larger vertical load.
As a preferred embodiment, the cross section of the lower diagonal brace 7 is a right triangle, and the bottom of the second connecting plate 18 and the second waist beam 19 are supported by the lower diagonal brace 7.
As shown in fig. 3-4, the lower diagonal brace 7 is located between the foundation pit enclosure 1 and the second connecting plate 18 below the basement B1 plate 23, so that the connection between the second connecting plate 18 and the foundation pit enclosure 1 is reinforced, and the second connecting plate 18 can bear larger vertical load.
As a preferred embodiment, the bottom of the basement B1 plate 23 is provided with the second skin 24, and the B1 outer wall and the waterproof 22, the basement B1 plate 23 are vertically arranged.
As a preferred embodiment, the positions of the upper rib wall 4 and the lower diagonal bracing 7 are arranged in one-to-one correspondence with the B1 outer wall and the waterproof 22 steel upright post 10, the second connecting plate 18 is provided with a concrete recharging hole 17, and the bottom of the lower diagonal bracing 7 is provided with a B2 fertilizer slot casting concrete 16.
As a preferred embodiment, a concrete guide pipe 25 is installed in the concrete recharging hole 17, and the outside of the concrete guide pipe 25 is filled with a fertilizer tank backfill structure 26.
As a preferred embodiment, the basement top plate 15 is covered with the third soil 28, the third soil 28 is internally provided with the B2 outer wall and the waterproof 27, and the left side of the B2 outer wall and the waterproof 27 is provided with the B2 fertilizer groove 29.
The construction steps of one embodiment of the method for backfilling the top-down fertilizer tank in advance are as follows:
Step A, as shown in FIG 5, constructing a foundation pit support structure 1, engineering piles 11 and steel upright posts 10;
step B, as shown in fig. 6, digging out the first skin soil 14, and constructing a first waist beam 12, a first connecting plate 13 and a basement roof 15;
Step C, as shown in figure 7, digging out second skin soil 24, and constructing a second waist beam 19, a second connecting plate 18, a basement B1 plate 23, an upper rib wall 4 and a lower diagonal brace 7;
the positions of the upper rib wall 4 and the lower diagonal bracing 7 are in one-to-one correspondence with the positions of the main beams near the B1 outer wall and the waterproof 22, concrete recharging holes 17 are reserved on the second connecting plate 18, and the B1 outer wall and the waterproof 22 are constructed after the concrete strength of the basement B1 plate 23, the upper rib wall 4 and the lower diagonal bracing 7 reaches the design strength;
step D, as shown in figure 8, installing a concrete conduit 25 in the concrete recharging hole 17, and backfilling a fertilizer groove 21 above the elevation of the B1 plate;
step E, as shown in fig. 9, digging out third skin soil 28, and constructing a basement bottom plate, a B2 outer wall and a waterproof layer 27;
And F, pouring a fertilizer groove 21 between the outer wall B2 and the foundation pit support structure 1 through a concrete conduit 25 as shown in fig. 10.
Embodiments of the present invention have the following advantages:
1. the fertilizer groove 21 is backfilled in advance, so that the outdoor pipeline and the outdoor road can be constructed in advance, and the overall construction period benefit is obtained;
2. the fertilizer groove 21 is backfilled in advance, so that the places outside the foundation pit and inside the foundation pit are communicated, the bridge passing between the edges of the foundation pit and the basement roof 15 is avoided, and the cost is saved;
3. the fertilizer groove 21 is backfilled in advance, so that the material transportation is more convenient, the storage area is larger, and the construction efficiency is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211382413.1A CN115897598B (en) | 2022-11-07 | 2022-11-07 | A construction method and technique for pre-filling fertilizer trenches in reverse construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211382413.1A CN115897598B (en) | 2022-11-07 | 2022-11-07 | A construction method and technique for pre-filling fertilizer trenches in reverse construction |
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| Publication Number | Publication Date |
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| CN115897598A CN115897598A (en) | 2023-04-04 |
| CN115897598B true CN115897598B (en) | 2026-04-07 |
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| CN202211382413.1A Active CN115897598B (en) | 2022-11-07 | 2022-11-07 | A construction method and technique for pre-filling fertilizer trenches in reverse construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117266218A (en) * | 2023-08-28 | 2023-12-22 | 上海建工四建集团有限公司 | Raft foundation side formwork structure and its construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832252A (en) * | 2021-01-06 | 2021-05-25 | 深圳市工勘岩土集团有限公司 | Deep foundation pit supporting construction method with large height difference of two sides |
| CN112982445A (en) * | 2021-02-24 | 2021-06-18 | 中建八局轨道交通建设有限公司 | Backfill method for common-structure fertilizer grooves of underground road with pipe gallery penetrating through underground |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202925551U (en) * | 2012-12-07 | 2013-05-08 | 天津住宅集团建设工程总承包有限公司 | Foundation pit brace replacing and construction structure at irregular place of ramp |
| KR101902786B1 (en) * | 2017-03-29 | 2018-10-01 | 유병훈 | Under ground structure construction method using composite sheet pile and under ground structure therewith |
| CN215801657U (en) * | 2021-05-29 | 2022-02-11 | 振中建设集团有限公司 | An inner support replacement structure for deep and large foundation pits |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832252A (en) * | 2021-01-06 | 2021-05-25 | 深圳市工勘岩土集团有限公司 | Deep foundation pit supporting construction method with large height difference of two sides |
| CN112982445A (en) * | 2021-02-24 | 2021-06-18 | 中建八局轨道交通建设有限公司 | Backfill method for common-structure fertilizer grooves of underground road with pipe gallery penetrating through underground |
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| CN115897598A (en) | 2023-04-04 |
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