JPH0237445B2 - HARIDASHIKAKUFUKUDORO - Google Patents
HARIDASHIKAKUFUKUDOROInfo
- Publication number
- JPH0237445B2 JPH0237445B2 JP19018784A JP19018784A JPH0237445B2 JP H0237445 B2 JPH0237445 B2 JP H0237445B2 JP 19018784 A JP19018784 A JP 19018784A JP 19018784 A JP19018784 A JP 19018784A JP H0237445 B2 JPH0237445 B2 JP H0237445B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- road
- groove
- support beams
- existing road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は張り出し拡幅道路に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a widened road.
本件出願人は張り出し方式による拡幅道路とし
て特開昭57−71904号公報に記載された発明を開
示した。該発明は既設道路の拡幅側端部に打設し
た支持杭上に支承して既設道路の拡幅側端部より
一部を張り出して張り出し桁を載置し、張り出し
桁の山側端部は反力用アンカーによつて固定し、
該張り出し桁上に道路進行方向の縦梁を介して床
版を載置したものである。
The applicant disclosed an invention described in Japanese Patent Application Laid-open No. 71904/1983 as a road widening road using a projecting method. In this invention, an overhanging girder is supported on support piles driven at the end of the widening side of the existing road, and a part of the overhanging girder is placed overhanging the end of the widening side of the existing road. fixed with an anchor for
A floor slab is placed on the overhanging girder via vertical beams in the direction of road travel.
該張り出し拡幅道路は施工に切土、埋土の手間
が要らないという効果が得られるとともに、支持
杭及びアンカーによつて安定した構造となるとい
う極めて大きな効果が得られるものである。 The projecting widening road has the advantage that it does not require the labor of cutting and filling soil during construction, and has the extremely large effect that it has a stable structure due to the support piles and anchors.
上記のような発明にて問題となるのは、支持杭
を打設する手間が極めて面倒で、大型機械の使用
が要求され、施工費が高くなることである。
Problems with the above-mentioned invention are that driving the support piles is extremely troublesome, requires the use of large machinery, and increases construction costs.
この発明にかかる張り出し拡幅道路は、既設道
路の谷側端部に形成した溝内にセメント硬化材を
打設して形成したカウンターウエイトと、谷側端
部に形成した溝内にコンクリートを打設して形成
した支持部と、既設道路の進行方向と直交する方
向に間隔をおいて配列された複数の支持梁とから
なり、それぞれの支持梁はその一端をカウンター
ウエイトに埋設されたアンカーボルトにより固定
し、その中間を支持部に載置して他端を既設道路
端部より張り出させ互いに隣接した支持梁を谷側
端部間に掛け渡した縦桁と支持梁とにプレストレ
スを与え連結し、支持梁と縦桁の段差上に床版端
部を載置することによつて上記問題点を解消する
ものである。
The overhang widening road according to the present invention includes a counterweight formed by pouring cement hardening material into a groove formed at the valley side end of an existing road, and a counterweight formed by pouring concrete into the groove formed at the valley side edge. and a plurality of support beams arranged at intervals in a direction perpendicular to the direction of travel of the existing road. Each support beam has one end connected to an anchor bolt embedded in a counterweight. Prestress is applied to the vertical girders and support beams, which are fixed and placed in the middle on a support part, with the other end overhanging the edge of the existing road, and the support beams that are adjacent to each other are spanned between the valley side ends. The above-mentioned problem is solved by connecting the support beams and placing the end of the floor slab on the step between the support beam and the longitudinal girder.
以下図に示す一実施例に基づきこの発明を施工
順に沿つて詳細に説明する。
The present invention will be described in detail below in accordance with the construction order based on an embodiment shown in the drawings.
〈１〉 溝掘削
既設道路に道路進行方向と直交する方向の溝１
を掘削する。溝１は既設道路の山側端部から谷側
端部にかけて連続して掘削する。溝１は道路進行
方向に適宜間隔離れて複数本掘削する。<1> Groove excavation Groove 1 in the direction perpendicular to the direction of road travel on the existing road
excavate. The trench 1 is excavated continuously from the mountain end to the valley end of the existing road. A plurality of grooves 1 are excavated at appropriate intervals in the direction of road travel.
〈２〉 カウンターウエイトの形成
既設道路の上側端部に溝１よりも更に深く溝２
を道路進行方向に沿つて掘削する。溝２内に鉄筋
を配筋し、コンクリート３を打設する。コンクリ
ート３には上端に雄ねじが螺設されたアンカーボ
ルト４が垂直に立設され、上端が溝２内に起立せ
しめられている。<2> Formation of counterweight Create groove 2 deeper than groove 1 at the upper end of the existing road.
excavate along the direction of road travel. Reinforcing bars are placed in the groove 2 and concrete 3 is poured. An anchor bolt 4 having a male thread at its upper end is vertically provided on the concrete 3, and its upper end is erected in the groove 2.
以上のように溝２内に打設したコンクリート３
によつてカウンターウエイトＡを形成するが、溝
２内壁の凹凸にコンクリート３が付着してコンク
リート３と地山の付着力が強固で、浮き上り荷重
が発生した場合、浮き上り抵抗力は著しく強固で
ある。 Concrete 3 placed in groove 2 as described above
However, when the concrete 3 adheres to the unevenness of the inner wall of the groove 2 and the adhesion between the concrete 3 and the ground is strong, and when an uplift load occurs, the uplift resistance is extremely strong. It is.
特に山岳道路においては地山は岩盤であること
が多く、コンクリート３と地山の付着による浮き
上り抵抗力は更に信用の高いものになる。 Especially on mountain roads, the ground is often bedrock, and the uplift resistance due to the adhesion of the concrete 3 and the ground is even more reliable.
〈３〉 支持部の形成
既設道路の谷側端部に溝１より更に深く溝５を
道路進行方向に沿つて掘削する。溝５内に鉄筋を
配筋し、コンクリート６等のセメント硬化材を打
設して支持部Ｂを形成する。<3> Formation of support section A groove 5 deeper than groove 1 is excavated along the direction of road travel at the valley side end of the existing road. Reinforcing bars are arranged in the groove 5, and a cement hardening material such as concrete 6 is cast to form the support part B.
支持部Ｂの他の変形例として第７図に示すよう
な実施例が考えられる。溝５の側壁、底部から地
山に鋼材１７を埋設し、鋼材１７周囲にグラウト
材１８を注入する。支持部Ｂ上には支持梁７を載
置するのであるが、鋼材１７とグラウト材１８に
よつて支持部Ｂ外周を補強するため、相当な重量
がかかつても支持部Ｂが沈下することがない。 As another modification of the support part B, an embodiment as shown in FIG. 7 can be considered. A steel material 17 is buried in the ground from the side wall and bottom of the groove 5, and a grout material 18 is injected around the steel material 17. The support beam 7 is placed on the support part B, but since the outer periphery of the support part B is reinforced by the steel material 17 and the grout material 18, the support part B will not sink even if a considerable weight is applied. do not have.
尚、この支持部Ｂはモルタル等のモルタル硬化
材でもよく、支持反力の大きさによつてはソイル
セメント50Kg／cm2〜150Kg／cm2でも十分に構造的
な効果は発揮できる。 Note that this support portion B may be made of a mortar hardening material such as mortar, and depending on the magnitude of the support reaction force, soil cement of 50 kg/cm 2 to 150 kg/cm 2 can exhibit sufficient structural effects.
〈４〉 支持梁の設置
溝１内に支持梁７を設置して一部を既設道路の
谷側端部から張り出す。<4> Installation of support beams The support beams 7 are installed in the groove 1, and a portion thereof extends from the valley side edge of the existing road.
支持梁７はプレキヤストコンクリート製であ
り、上面の幅方向両端部に長手方向に連続する段
差８，８が形成されている。支持梁７の山側端部
には上下方向にボルト挿通孔９が貫通されてい
る。支持梁７の谷側端部には幅方向に水平に複数
のPC鋼材挿通孔１０が穿設されている。 The support beam 7 is made of precast concrete, and has steps 8, 8 continuous in the longitudinal direction formed at both ends of the upper surface in the width direction. A bolt insertion hole 9 is vertically penetrated through the mountain side end of the support beam 7. A plurality of PC steel material insertion holes 10 are bored horizontally in the width direction at the valley side end of the support beam 7.
支持梁７のボルト挿通孔９にカウンターウエイ
トＡ上に突出したアンカーボルト４を挿通し、ナ
ツト１１によつて支持梁７を固定する。 The anchor bolt 4 protruding above the counterweight A is inserted into the bolt insertion hole 9 of the support beam 7, and the support beam 7 is fixed with a nut 11.
支持梁７の中間部は支持部Ｂ上に載置する。 The middle part of the support beam 7 is placed on the support part B.
〈５〉 縦行の連結
隣接する支持梁７の谷側端部間に縦桁１２を掛
け渡す。<5> Vertical connection The vertical girder 12 is spanned between the valley side ends of adjacent support beams 7.
縦桁１２はプレキヤストコンクリート製であつ
て上面の幅方向山側端部には長手方向に連続して
段差１３が形成されている。縦桁１２には長手方
向に複数のPC鋼材挿通孔１４が貫通されている。 The longitudinal girder 12 is made of precast concrete, and a step 13 is formed continuously in the longitudinal direction at the end on the mountain side in the width direction of the upper surface. A plurality of PC steel material insertion holes 14 are penetrated through the longitudinal beam 12 in the longitudinal direction.
支持梁７のPC鋼材挿通孔１０と縦桁１２のPC
鋼材挿通孔１４にPC鋼材等１５が挿通されてプ
レストレスが与えられ、支持梁７の先端に縦桁１
２が連結されている。 PC steel insertion hole 10 of support beam 7 and PC of longitudinal girder 12
A prestressed steel material 15 is inserted into the steel material insertion hole 14 and prestressed, and the longitudinal girder 1 is placed at the tip of the support beam 7.
2 are connected.
〈６〉 床版の設置
プレキヤストコンクリート製の方形状の床版１
６を隣接する支持梁７，７間に設置する。床版１
６の端部を支持梁７，７の段差８，８及び縦桁１
２の段差１３上に載置する。<6> Installation of floor slab Precast concrete square floor slab 1
6 is installed between adjacent support beams 7, 7. Floor slab 1
The ends of 6 are supported by the steps 8, 8 of beams 7, 7 and the longitudinal girder 1
It is placed on the step 13 of No. 2.
この発明は以上のように一部を既設道路から張
り出した支持梁の中間部を、既設道路の谷側端部
に形成した支持部上に載置する。支持部は掘削し
た溝内にコンクリートを打設して形成するもの
で、張り出し部分の小さい支持梁にあつては、張
り出し部分にかかる荷重を充分支えることができ
る。
In this invention, as described above, the middle part of the support beam, which partially extends from the existing road, is placed on the support part formed at the valley side end of the existing road. The support portion is formed by pouring concrete into an excavated trench, and in the case of a support beam with a small overhang, it can sufficiently support the load applied to the overhang.
従つて支持杭を使用する場合に比較して施工が
容易となり、また支持梁の端部は縦桁に連結され
プレストレスが与えられ補強され、支持梁と縦桁
との段部に載置された床版を確実に支承してその
上での舗装を迅速容易に工期が短縮でき、大型機
械の使用も不要で工費を安価にすることができ
る。 Therefore, construction is easier than when using support piles, and the ends of the support beams are connected to the longitudinal girders, prestressed and reinforced, and placed on the step between the support beams and the longitudinal girders. To securely support a floor slab, paving on it can be done quickly and easily, shortening the construction period, and eliminating the need to use large machinery, making it possible to reduce construction costs.
第１図はこの発明の一実施例の斜視図、第２図
〜第６図は施工順序の縦断面図、第７図は支持基
礎梁の変形例の縦断面図である。
Ａ…カウンターウエイト、Ｂ…支持基礎梁、１
…溝、２…溝、３…コンクリート、４…アンカー
ボルト、５…溝、６…コンクリート、７…支持
梁、８…段差、９…ボルト挿通孔、１０…PC鋼
材挿通孔、１２…縦桁、１３…段差、１４…PC
鋼材挿通孔、１５…PC鋼材、１６…床版、１７
…鋼材、１８…グラウト材。
FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 to 6 are longitudinal cross-sectional views of the construction sequence, and FIG. 7 is a longitudinal cross-sectional view of a modified example of the supporting foundation beam. A...Counterweight, B...Support foundation beam, 1
...Groove, 2...Groove, 3...Concrete, 4...Anchor bolt, 5...Groove, 6...Concrete, 7...Support beam, 8...Step, 9...Bolt insertion hole, 10...PC steel material insertion hole, 12...Vertical girder , 13...step, 14...PC
Steel material insertion hole, 15... PC steel material, 16... Floor slab, 17
... Steel material, 18... Grout material.
Claims (1)
ト硬化材を打設して形成したカウンターウエイト
と、谷側端部に形成した溝内にコンクリートを打
設して形成した支持部と、既設道路の進行方向と
直交する方向に間隔をおいて配列された複数の支
持梁とからなり、それぞれの支持梁はその一端が
カウンターウエイトに埋設されたアンカーボルト
により固定され、その中間は支持部に載置されて
他端が既設道路端部より張り出されており、互い
に隣接した支持梁の谷側端部間に掛け渡された縦
桁と支持梁とはPC鋼線等によりプレストレスが
与えられ連結され、支持梁と縦桁にそれぞれ形成
された段差上に床版端部が載置されていることを
特徴とする張り出し拡幅道路。1. A counterweight formed by pouring cement hardening material into a groove formed at the mountain end of the existing road, a support section formed by pouring concrete into a groove formed at the valley end, and the existing road. Consisting of a plurality of support beams arranged at intervals in a direction perpendicular to the direction of road travel, one end of each support beam is fixed by an anchor bolt buried in the counterweight, and the middle part is fixed to the support part. The vertical girders and support beams are placed on top of each other with their other ends overhanging the edge of the existing road, and are stretched between the valley side ends of adjacent support beams and are prestressed using prestressed steel wires, etc. An overhang widening road characterized in that the end portions of the deck slabs are placed on steps formed on support beams and longitudinal girders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19018784A JPH0237445B2 (en) | 1984-09-11 | 1984-09-11 | HARIDASHIKAKUFUKUDORO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19018784A JPH0237445B2 (en) | 1984-09-11 | 1984-09-11 | HARIDASHIKAKUFUKUDORO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168906A JPS6168906A (en) | 1986-04-09 |
| JPH0237445B2 true JPH0237445B2 (en) | 1990-08-24 |
Family
ID=16253898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19018784A Expired - Lifetime JPH0237445B2 (en) | 1984-09-11 | 1984-09-11 | HARIDASHIKAKUFUKUDORO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237445B2 (en) |
-
1984
- 1984-09-11 JP JP19018784A patent/JPH0237445B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168906A (en) | 1986-04-09 |
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