JPH0237444B2 - KAKUFUKUDOROKOHO - Google Patents
KAKUFUKUDOROKOHOInfo
- Publication number
- JPH0237444B2 JPH0237444B2 JP19018684A JP19018684A JPH0237444B2 JP H0237444 B2 JPH0237444 B2 JP H0237444B2 JP 19018684 A JP19018684 A JP 19018684A JP 19018684 A JP19018684 A JP 19018684A JP H0237444 B2 JPH0237444 B2 JP H0237444B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- road
- support
- counterweight
- 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
- 239000004567 concrete Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 239000011178 precast concrete Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 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〕 この発明は拡幅道路工法に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a road widening method.
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おいて問題となるのは、反
力用アンカーを設置する手間が極めて面倒で、大
型機械を使用することが要求され、施工費が高く
なることである。
Problems with the invention as described above are that installing the reaction force anchor is extremely troublesome, requires the use of large machinery, and increases construction costs.
この発明にかかる拡幅道路工法は、既設道路の
山側端部に形成した溝部内にコンクリート等のセ
メント硬化材を打設して形成したカウンターウエ
イトに、道路進行方向に直交する方向に配置した
支持梁の一端を固定し、支持梁の中間部を谷川端
部の支持部上に載置し他端を既設道路から張り出
させ支持梁の上側端部の浮き上りをカウンターウ
エイトによつて防止することによつて上記の問題
点を解消するものである。
The road widening method according to the present invention includes a counterweight formed by pouring a hardened cement material such as concrete into a groove formed at the mountain end of an existing road, and a support beam arranged in a direction perpendicular to the direction of road travel. One end is fixed, the middle part of the support beam is placed on the support part at the end of the valley, the other end is extended from the existing road, and a counterweight is used to prevent the upper end of the support beam from lifting up. This solves the above problems.
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
方向に適宜間隔離して複数本掘削する。<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等のセメント硬化材を
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 groove 2, and cement hardening material such as 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
か多く、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。 In particular, on mountain roads, the ground is often bedrock, and the uplift resistance due to the adhesion of concrete 3 and the ground is even more reliable.
打設するのはコンクリートの他、モルタルでも
よく、またカウンターウエイトは構造上の強度は
必要とせず30Kg／cm2〜100Kg／cm2程度のソイルセ
メントでもよい。 In addition to concrete, mortar may be used for pouring, and the counterweight does not require structural strength and may be soil cement having a strength of about 30 kg/cm 2 to 100 kg/cm 2 .
〈３〉 支持部の形成
既設道路の谷川端部に溝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内にコンク
リート６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 end of the valley of the existing road. A support portion B is formed by pouring concrete 6 into the groove 5.
〈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のアンカーボルト挿通孔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 anchor bolt insertion hole 9 of the support beam 7, and the support beam 7 is fixed with a nut 11.
〈５〉 縦桁の連結
隣接する支持梁７の谷側端部間に縦桁１２を掛
け渡す。<5> Connection of longitudinal girders The longitudinal girders 12 are 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を挿通し、支持
梁７の先端に縦桁１２を連結する。 PC steel insertion hole 10 of support beam 7 and PC of longitudinal girder 12
A prestressing steel material 15 is inserted into the steel material insertion hole 14, and the vertical beam 12 is connected to the tip of the support beam 7.
〈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な構成を有し、支持梁の
既設道路からの張り出し部分に荷重がかかつて支
持梁の山側端部に浮き上ろうとする力が発生して
も、カウンターウエイトによつて防止する。カウ
ンターウエイトは掘削した溝内にコンクリートを
打設して形成するため、地山の凹凸に付着して強
固な浮き上り抵抗力を得ることができる。従つて
張り出し長さの小さい道路の場合にはカウンター
ウエイトの浮き上り抵抗力によつて充分に浮き上
りを防止できる。
This invention has the above-mentioned configuration, and even if a load is applied to the overhanging part of the support beam from the existing road and a force is generated that tends to lift up the mountain side end of the support beam, it is prevented by the counterweight. do. The counterweight is formed by pouring concrete into an excavated trench, so it adheres to the unevenness of the ground and provides strong uplift resistance. Therefore, in the case of a road with a small overhang length, lifting can be sufficiently prevented by the lifting resistance of the counterweight.
反力アンカーを使用せずカウンターウエイトに
よつて浮き上りを防止するため、大型機械がなく
とも施工が可能で、工期も短縮でき、施工費を安
価にすることができる。 Since floating is prevented by a counterweight without using a reaction anchor, construction can be carried out without the need for large machinery, the construction period can be shortened, and construction costs can be reduced.
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である。
Ａ…カウンターウエイト、Ｂ…支持部、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…アンカーボルト挿通孔、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。
FIG. 1 is a perspective view of one embodiment of the present invention, and FIGS. 2 to 6 are longitudinal cross-sectional views of the construction sequence. A...Counterweight, B...Support part, 1...
groove, 2... groove, 3... concrete, 4... anchor bolt, 5... groove, 6... concrete, 7... support beam,
8...Step, 9...Anchor 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.
Claims (1)
ント硬化材を打設してカウンターウエイトを形成
すると共に既設道路の谷川端部に溝を形成し溝内
にコンクリートを打設して支持部を形成し、既設
道路の道路進行方向と直交する方向に間隔をおい
て複数の支持梁を配置し、それぞれの支持梁の一
端をカウンターウエイトに埋設したアンカーボル
トにより固定し、中間部を支持部上に載置すると
共に、他端を既設道路の谷川端部から張り出させ
各支持梁間に床版を載置して新設道路を形成する
ことを特徴とする拡幅道路工法。1. Form a groove at the mountain end of the existing road and pour cement hardening material into the groove to form a counterweight. At the same time, form a groove at the valley end of the existing road and pour concrete into the groove for support. A plurality of support beams are arranged at intervals in a direction perpendicular to the direction of travel of the existing road, and one end of each support beam is fixed with an anchor bolt embedded in the counterweight to support the middle part. A road widening method characterized by forming a new road by placing a floor slab between each support beam with the other end overhanging the valley end of an existing road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19018684A JPH0237444B2 (en) | 1984-09-11 | 1984-09-11 | KAKUFUKUDOROKOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19018684A JPH0237444B2 (en) | 1984-09-11 | 1984-09-11 | KAKUFUKUDOROKOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168905A JPS6168905A (en) | 1986-04-09 |
| JPH0237444B2 true JPH0237444B2 (en) | 1990-08-24 |
Family
ID=16253881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19018684A Expired - Lifetime JPH0237444B2 (en) | 1984-09-11 | 1984-09-11 | KAKUFUKUDOROKOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237444B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04149303A (en) * | 1990-10-12 | 1992-05-22 | Kensetsu Kiso Eng Co Ltd | Method for widening road |
-
1984
- 1984-09-11 JP JP19018684A patent/JPH0237444B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168905A (en) | 1986-04-09 |
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