JP3845491B2 - Temporary support base - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a temporary support base that is attached to a support pile that prevents a building from sinking or corrects a sinking building and takes a reaction force to temporarily receive the weight of the building.
[0002]
[Prior art]
Under the foundation of the building, the support pile that has penetrated the ground in order to prevent the settlement of the building, etc., may be reinforced by breaking the head of the support pile, or making correction work by subsidence. In the case where the supporting force of the support pile is inspected or reloaded, it is necessary to attach a support base that temporarily receives the weight of the building via the jack and the temporary support base around the support pile.
[0003]
In such a case, conventionally, as shown in FIG. 6, when the support pile 15 is made of reinforced concrete (made of RC), in the support pile 15, the outer peripheral portion to which the temporary support base 16 is to be attached, A metal bracket having a horizontal receiving surface 18a on an iron plate 17 fixed to the support pile 15 by winding the iron plate 17 of a required width and fixing it with welding means or the like, and further using an adhesive when necessary. The desired number 18 is secured by welding means.
[0004]
Then, a jack 20 and a temporary support 21 are set between the horizontal receiving surface 18a of the bracket 18 and the lower surface of the foundation 19 of the building, and a reaction force is applied to the support 16 to receive the weight of the building. After that, the head of the support pile was destroyed and a new head was provided.
[0005]
When the support pile 15 is a steel pipe pile, as shown in FIG. 7, the bracket 18 is directly fixed to the outer peripheral surface of the steel pipe pile 15 by a required number of welding means, and the support base 16 for temporary receiving is attached. Form.
[0006]
Then, as shown in FIG. 8, a jack 20 and a temporary receiving table 21 are set between the horizontal receiving surface 18a of the bracket 18 and the lower surface of the foundation 19 of the building, and a reaction force is applied to the supporting table 16 for temporary receiving. Then, after receiving the weight of the building with these, the head of the support pile 15 was destroyed to provide a new head.
[0007]
[Problems to be solved by the invention]
However, in order to fix the bracket 18 to an iron plate or the like, welding means are used. However, since the working space 22 is a narrow space excavated from the ground 23 with the minimum necessary, smoke and strong due to welding work are strong. The working environment becomes worse due to sparks, etc., and groundwater may accumulate, so you must be careful about leakage.
[0008]
Furthermore, since the welding operation is performed in an unreasonable posture in a narrow space, the fixing strength of the bracket 18 is easily influenced by the welding skill and is not stable, and the steel pipe pile 15 on the side to be welded may be distorted. There are problems such as.
[0009]
As described above, the support base for temporary receiving attached to the support pile has problems to be solved in the improvement of the work environment and the health management of the worker in the attachment method to the support pile.
[0010]
[Means for Solving the Problems]
The gist for solving the above-mentioned problem of the temporary support base according to the present invention is a base body that is formed in a cylindrical shape along the outer shape of the support pile with a flat plate having a required width, and is attached to the support pile, Bolt insertion holes are provided in the outer peripheral surface of the cylindrical base body so as to extend from both ends in the circumferential direction to face the radially outer side of the cylindrical base body and to fix the base body to the support pile. And a support that is extended so as to be gradually spaced apart from the fastening portion toward the outside in the radial direction of the cylindrical base body, and for placing a jack plate on top of each other It consists of parts.
[0011]
The cylindrical base body is divided into two along its axis, and the two-part base body is provided with a fastening portion and a support portion, and the base body of the two-part body is attached to the support pile in an opposing arrangement. And fixing with a bolt in the fastening portion.
[0012]
According to the support base for temporary support according to the present invention, it is possible to easily attach the support base for temporary support to the support pile to be re-reinforced with bolts and nuts without using welding means. As a result, it is possible to work easily and quickly even in a narrow work space, thereby shortening the construction period.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, a temporary support base according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, portions corresponding to the conventional example are denoted by the same reference numerals as those of the conventional example.
[0014]
In the first embodiment of the present invention, as shown in FIG. 1, for example, in the case of a square support pile 15 made of a steel pipe, the head is cut and re-reinforced so as to be formed in advance. The temporary support base 1 is mounted on the head of the support pile 15 that has penetrated the ground below the foundation 19 of the building.
[0015]
In order to form the temporary support 1, as shown in FIG. 2, a through-hole 1 c for inserting a bolt is formed in a metal plate having a required width in a portion to be a fastening portion 1 d described later. The flat plate is bent in a U-shape to form a base body 1a substantially matched to the half shape of the outer shape of the support pile 15, and the base body 1a in the circumferential direction on the outer peripheral surface in a cylindrical shape Fastening portions 1d are extended from both ends so as to be orthogonal to the circumferential direction ( outside in the radial direction of the cylindrical base body 1a) .
[0016]
Further, when the halved base body 1a is disposed opposite to each other from the fastening portions 1d, the base body 1a is gradually separated from each other so as to have a “C” shape when viewed in plan. The jack is a support portion 1b that supports one side end portion 1e. The support reinforcing portion 1f is bent and extended so as to be further separated from the support portion 1b.
[0017]
As shown in FIG. 2, the base body 1a having the above-described configuration is arranged so as to face each other with the U-shaped concave side facing each other, whereby one temporary support base 1 is formed. .
[0018]
The base body 1a is formed between the opposing surfaces of the fastening portions 1d, 1d arranged to face each other so that a slight gap is formed when the base body 1a is sandwiched between the support piles 15. With this, a strong frictional force is exerted on the contact surface between the inner side surface of the base body 1a and the support pile 15 after the bolts are tightened so that the gap is eliminated.
[0019]
The temporary support base 1 is clamped on the outer peripheral surface of the support pile 15, and bolts are inserted into the through holes 1c of the fastening portion 1d from one side and fastened with nuts to support the jack on the support pile 15. A platform is formed.
[0020]
As shown in FIG. 3, the second embodiment of the present invention is formed as a base body 1a formed by bending a single metal flat plate so as to be substantially aligned with the rectangular support pile 15, and similar to the first embodiment. The fastening portion 1d, the support portion 1b, and the support reinforcing portion 1f are formed to form a temporary receiving support base 1.
[0021]
According to the temporary support base 1 according to the second embodiment, the jack can be supported on one side of the support pile 15.
[0022]
In the third embodiment of the present invention, as shown in FIG. 4, if the support pile 15 is a cylindrical steel pipe pile, the base body 1a is formed in a semicircular shape so as to substantially match the outer shape of the support pile. A fastening portion 1d, a support portion 1b, and a support reinforcing portion 1f are formed from both end portions in the circumferential direction on the outer peripheral surface of the main body 1a in a cylindrical shape, and these are opposed to each other and are used as a pair for temporary support. It is intended to be a stand 1 [0023]
According to the temporary support base 1 according to the third embodiment, jack support bases can be formed on both sides of the pile with respect to the cylindrical steel pipe pile or the concrete pile.
[0024]
In the fourth embodiment of the present invention, as shown in FIG. 5, the cylindrical shape of the support pile 15 is substantially the same as the cylindrical support pile 15, instead of the semicircular shape of the base body 1 a divided into two. In addition, one metal flat plate is processed into a cylindrical shape, and a fastening portion 1d, a supporting portion 1b, and a supporting reinforcing portion 1f are formed from both end portions in the circumferential direction, and a temporary support base 1 is formed. It is what.
[0025]
According to the temporary support base 1 according to the fourth embodiment, a jack support base is formed on one side of the cylindrical support pile 15.
[0026]
Then, a method of using each temporary support base 1 in the first to fourth embodiments by sandwiching the support pile 15 will be described. As shown in FIG. 1, for example, the temporary support base 1 according to the first embodiment will be described as a representative. First, after excavating under the foundation 19 to form the work space 22, The head 15a of the support pile 15 to be reinforced is cleaned, and the temporary support base 1 is firmly clamped to the head 15a with a required number of bolts 2 and nuts using a wrench. In some cases, the fastening operation is performed with a hydraulic jack.
[0027]
Then, the laid iron plates 3 and 3 are placed horizontally on the side end portions 1e of the support portions 1b and the support reinforcing portions 1f of the temporary support base 1 spread on both sides of the support pile 15.
[0028]
A jack 20 is placed on one side of the laid iron plates 3 and 3, and a temporary support 21 is placed on the other side.
[0029]
The jack 20 receives the weight of the building by reacting the base 19 against the temporary support base 1. The insertion amount of the temporary support 21 is also adjusted by the adjustment plate 21 a so that the jack 20 and the temporary support 21 receive the weight of the building evenly on both sides of the support pile 15.
[0030]
After that, the head 15a of the support pile 15 is removed by breaking or scrambling, and then a new support pile is inserted and re-reinforced.
[0031]
As described above, the temporary support base 1 according to the present invention eliminates the need to work with welding means to provide the temporary support base in the narrow work space 22, so that the temporary support for the support pile is used. The work to attach the support base is easy and the work period is shortened, and there is no harm to the health due to sparks and smoke accompanying welding, and the joining strength does not vary depending on the welding skill, so it is qualitatively stable. Can be repaired.
[0032]
【The invention's effect】
As described above, the temporary receiving support base of the present invention is a base body that is formed in a cylindrical shape along the outer shape of the support pile with a flat plate having a required width, and the cylindrical base. Fastening that extends from both ends in the circumferential direction of the outer peripheral surface of the main body so as to face the outer side in the radial direction of the cylindrical base body, and is provided with bolt insertion holes for fixing the base body to the support pile And a support portion that extends so as to gradually spread away from the fastening portion toward the outer side in the radial direction of the cylindrical base body, and on which a board for jack is placed. Therefore, there is no need for welding means to provide a temporary support for the support pile in a narrow space under the building, and there is no inconvenience that the joint strength varies depending on the welding skill of the operator, and the working environment is also improved. Qualitatively stable repair work It is intended to achieve the excellent effect that can be.
[0033]
Furthermore, the work of attaching the temporary support base to the support pile becomes the work of fastening bolts, etc. in place of the difficult work of welding, which makes it easy and shortens the work period. is there.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a use state of a temporary support base according to the present invention.
FIG. 2 is a perspective view of a temporary support base according to the first embodiment of the present invention.
FIG. 3 is a perspective view of a temporary support base according to a second embodiment of the present invention.
FIG. 4 is a perspective view of a temporary support base according to a third embodiment of the present invention sandwiched between cylindrical support piles.
FIG. 5 is a perspective view of a temporary support base according to a fourth embodiment of the present invention.
FIG. 6 is an explanatory view showing a use state in which a temporary support base according to a conventional example is attached to a concrete support pile.
FIG. 7 is an explanatory view showing a use state in which a temporary support base according to a conventional example is attached to a steel pipe pile.
FIG. 8 is an explanatory diagram of a use state of a temporary support base according to a conventional example.
[Explanation of symbols]
1 temporary support base, 1a base body, 1b support section, 1c through hole,
1d fastening part, 1e side end part, 1f support reinforcement part, 2 bolt,
3 Laying iron plate, 15 Support pile, 20 jack, 21 Temporary cradle.

Claims (2)

A base body that is formed into a cylindrical shape along the outer shape of the support pile with a flat plate of the required width and is attached to the support pile;
Bolt insertion holes are provided in the outer peripheral surface of the cylindrical base body so as to extend from both ends in the circumferential direction to face the radially outer side of the cylindrical base body and to fix the base body to the support pile. A fastening portion formed,
It is formed to extend from the fastening portion so as to gradually spread away from the fastening base body in the radial direction, and includes a support portion on which a board for jack is placed.
A temporary support for the support. The cylindrical base body is divided into two along its axis, and a fastening part and a support part are provided on the base part of the two parts. Being fixed with bolts in the fastening portion;
  The temporary support base according to claim 1.

Images