CN106065564A - A kind of seamless bridge of steel-concrete combined structure monoblock type - Google Patents
A kind of seamless bridge of steel-concrete combined structure monoblock type Download PDFInfo
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- CN106065564A CN106065564A CN201610398427.0A CN201610398427A CN106065564A CN 106065564 A CN106065564 A CN 106065564A CN 201610398427 A CN201610398427 A CN 201610398427A CN 106065564 A CN106065564 A CN 106065564A
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- 239000004567 concrete Substances 0.000 title claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 36
- 229910000746 Structural steel Inorganic materials 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 11
- 239000012791 sliding layer Substances 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 2
- 241001669679 Eleotris Species 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 10
- 239000000945 filler Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
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- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种钢混组合结构整体式无缝桥，包括若干对基础桩、以及与各对基础桩相对应的桥跨结构钢主梁、混凝土桥面板、接线路面、台后填料层、基础桩、两个桥台、以及若干第一连接件。本发明构造简单、受力性能好，承载能力及抗震性能较好，施工周期短，具有较好的耐久性，并且取消伸缩装置。
The invention discloses an integral seamless bridge of steel-concrete composite structure, which comprises several pairs of foundation piles, and steel main girders of the bridge span structure corresponding to each pair of foundation piles, a concrete bridge deck, a connecting line surface, a filler layer behind the platform, Foundation piles, two abutments, and several first connecting pieces. The invention has the advantages of simple structure, good mechanical performance, good bearing capacity and anti-seismic performance, short construction period, good durability, and cancels the telescopic device.
Description
技术领域technical field
本发明属于桥梁建造技术领域，涉及一种钢混组合结构整体式无缝桥。The invention belongs to the technical field of bridge construction and relates to a steel-concrete combined structure integral seamless bridge.
背景技术Background technique
现代道路工程中,钢筋混凝土/预应力混凝土桥梁以其耐久性和经济优势占据了现代桥梁总数的90％以上。然而，为了满足桥梁结构在各种作用下的变形需要并保证车辆平稳地通过桥面，通常在两梁端之间，梁端与桥台之间设置伸缩装置。然而，桥梁的伸缩装置长期暴露在大气中，使用环境比较恶劣，是桥梁结构中最易遭受破坏而又难以修补的部位。而桥梁伸缩装置的破坏，又可能引起很大的车辆冲击荷载，恶化行车状况，急剧降低桥梁的使用寿命和其耐久性。In modern road engineering, reinforced concrete/prestressed concrete bridges account for more than 90% of the total number of modern bridges due to their durability and economic advantages. However, in order to meet the deformation needs of the bridge structure under various effects and ensure that vehicles pass through the bridge deck smoothly, telescopic devices are usually arranged between the ends of the two girders, and between the ends of the girder and the abutment. However, the expansion device of the bridge is exposed to the atmosphere for a long time, and the operating environment is relatively harsh. It is the most vulnerable and difficult to repair part of the bridge structure. And the destruction of the bridge expansion device may cause a large vehicle impact load, worsen the driving condition, and sharply reduce the service life and durability of the bridge.
随着全寿命周期桥梁设计概念的提出及实施，桥梁设计不仅考虑其当前的使用性能，还要降低其在使用寿命周期内的养护，维修等费用，这其中有相当部分集中在伸缩缝维修和维修过程中所带来的直接和间接的经济损失。为了避免过高的养护维修费用，对于量大面广的中小跨径桥梁，无伸缩缝缝桥梁提供了一种解决方案。With the introduction and implementation of the concept of full life cycle bridge design, the design of bridges not only considers its current performance, but also reduces its maintenance and repair costs during its life cycle, a considerable part of which focuses on expansion joint maintenance and The direct and indirect economic losses caused by the maintenance process. In order to avoid excessive maintenance and repair costs, bridges without expansion joints provide a solution for small and medium-span bridges with a large quantity and a wide area.
近些年来在国内逐渐应用起来的钢-混凝土组合结构能够充分利用了钢材和混凝土各自的材料性能，具有承载能力高、刚度大、抗震性能和动力性能好、构件截面尺寸小、施工快速方便等优点。同钢筋混凝土结构相比，组合结构可以减小构件截面尺寸、减轻结构自重、降低基础造价、方便安装、缩短施工周期、增加构件和结构的延性等。采用组合结构可以节省脚手架和模板，便于立体交叉施工，减小现场湿作业量，减轻施工扰民程度，因此，综合上述钢混组合结构的优势和既有混凝土桥梁耐久性问题的解决办法，需要一种面向中小跨径桥梁的新的桥梁体系。The steel-concrete composite structure that has been gradually applied in China in recent years can make full use of the respective material properties of steel and concrete. It has high bearing capacity, high rigidity, good seismic performance and dynamic performance, small component cross-sectional size, and fast and convenient construction. advantage. Compared with the reinforced concrete structure, the composite structure can reduce the section size of the components, reduce the structure's self-weight, reduce the cost of the foundation, facilitate installation, shorten the construction period, and increase the ductility of components and structures. The use of combined structure can save scaffolding and formwork, facilitate the construction of three-dimensional intersection, reduce the amount of wet work on site, and reduce the degree of construction disturbance. Therefore, combining the advantages of the above-mentioned steel-concrete composite structure and the solution to the durability of existing concrete bridges requires a solution. A new bridge system for small and medium span bridges.
其构造简单、受力性能良好，继承了传统组合结构承载能力高、抗震性能和动力性能好、施工快速方便的优点，同时取消了传统桥梁的伸缩装置，适用于量大面广的中小跨径桥梁，能够显著降低桥梁在其全寿命周期内的资金投入。Its structure is simple and its mechanical performance is good. It inherits the advantages of traditional composite structure with high bearing capacity, good seismic performance and dynamic performance, and fast and convenient construction. At the same time, it cancels the expansion device of traditional bridges. The bridge can significantly reduce the capital investment of the bridge in its whole life cycle.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点，提供了一种钢混组合结构整体式无缝桥，该无缝桥构造简单、受力性能好，承载能力及抗震性能较好，施工周期短，具有较好的耐久性，并且取消伸缩装置。The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a steel-concrete composite structure integral seamless bridge, which has a simple structure, good mechanical performance, good bearing capacity and seismic performance, and a short construction period , has better durability, and cancels the telescopic device.
为达到上述目的，本发明所述的钢混组合结构整体式无缝桥包括若干对基础桩、以及与各对基础桩相对应的桥跨结构钢主梁、混凝土桥面板、接线路面、台后填料层、基础桩、两个桥台、以及若干第一连接件；In order to achieve the above object, the integral seamless bridge of steel-concrete composite structure according to the present invention includes several pairs of foundation piles, and bridge span structural steel girders corresponding to each pair of foundation piles, concrete bridge deck, connecting line surface, and back of the platform. Filling layer, foundation piles, two abutments, and several first connectors;
各对基础桩竖立架设于施工位置，桥台通过桩帽固定于基础桩上，桥跨结构钢主梁的一端固定于一个基础桩上的桥台上，桥跨结构钢主梁的另一端固定于另一个基础桩上的桥台上，混凝土桥面板铺设于桥跨结构钢主梁的上表面，且混凝土桥面板的两端均延伸到桥台的外侧，混凝土桥面板的两端均设有搭板，接线路面的端部位于搭板上且与混凝土桥面板连接，混凝土桥面板的上表面设有桥面铺装，第一连接件的一端浇筑于桥台的混凝土中，第一连接件的另一端焊接在桥跨结构钢主梁的端部，搭板的下端包裹于台后填料层内，搭板的下表面设有滑动层，桥台与台后填料层之间设有第一弹性层。Each pair of foundation piles is erected at the construction site, the abutment is fixed on the foundation piles through pile caps, one end of the span structural steel girder is fixed on the abutment on a foundation pile, and the other end of the span structural steel girder is fixed On the abutment on another foundation pile, the concrete bridge deck is laid on the upper surface of the steel girder of the bridge span structure, and both ends of the concrete bridge deck extend to the outside of the bridge abutment, and both ends of the concrete bridge deck are equipped with As for the board, the end of the connecting line surface is located on the board and connected with the concrete bridge deck, the upper surface of the concrete bridge deck is provided with bridge deck pavement, one end of the first connector is poured into the concrete of the bridge abutment, and the first connector The other end of the bridge is welded to the end of the bridge structural steel girder, the lower end of the strapping plate is wrapped in the packing layer behind the abutment, the lower surface of the strapping plate is provided with a sliding layer, and a first Elastic layer.
桥跨结构钢主梁的横截面为工字型结构。The cross-section of the steel main girder of the bridge span is an I-shaped structure.
所述第一连接件为栓钉或开孔钢板连接件。The first connecting piece is a peg or a perforated steel plate connecting piece.
基础桩为H型钢桩，基础桩的外壁上套接有保护层，保护层与基础桩之间设置有由细沙填充而成的第二弹性层。The foundation pile is an H-shaped steel pile, the outer wall of the foundation pile is sleeved with a protective layer, and a second elastic layer filled with fine sand is arranged between the protection layer and the foundation pile.
基础桩与桩帽之间设有第二连接件，第二连接件的两端分别内嵌固定于基础桩及桩帽内。A second connecting piece is arranged between the foundation pile and the pile cap, and the two ends of the second connecting piece are embedded and fixed in the foundation pile and the pile cap respectively.
桩帽与桥台之间设有钢筋，钢筋的两端分别内嵌固定于桩帽与桥台内。A steel bar is provided between the pile cap and the abutment, and the two ends of the steel bar are respectively embedded and fixed in the pile cap and the abutment.
搭板与桥台的翼墙之间设有支座以及用于进行防水的防水层。A support and a waterproof layer for waterproofing are arranged between the butt plate and the wing wall of the abutment.
搭板的端部设有缓冲层，搭板的下方设有枕梁及滑动层。A buffer layer is provided at the end of the board, and a corbel and a sliding layer are provided under the board.
台后填料层内设有排水系统。There is a drainage system in the packing layer behind the platform.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的钢混组合结构整体式无缝桥包括桥台、桥跨结构钢主梁及若干连接件，其中第一连接件的一端浇筑于桥台混凝土中，连接件的另一端焊接于桥跨结构钢主梁的端部，混凝土桥面板铺设于桥跨结构钢主梁的上表面，各部件之间的无缝连接。同时混凝土路面板的两端设有搭板，搭板的下端包裹于台后填料层内，搭板的底部设有滑动层，桥台与台后填料层之间设有第一弹性层，通过台后填料层、滑动层及第一弹性层缓冲桥体的热胀冷缩，从而取消伸缩装置，本发明集成组合结构与无缝桥的优势，提高了桥梁的抗震性能及使用寿命，同时有效的解决现有混凝土桥梁伸缩装置处耐久性问题，受力性能好及承载能力较好，并且施工周期短，建造、运营及养护成本较低。The integral seamless bridge with steel-concrete composite structure according to the present invention includes an abutment, a span structural steel girder and several connecting pieces, wherein one end of the first connecting piece is poured into the abutment concrete, and the other end of the connecting piece is welded to the abutment concrete. The end of the span structural steel girder, the concrete bridge deck is laid on the upper surface of the bridge structural steel girder, and the seamless connection between each component. At the same time, the two ends of the concrete road slab are provided with a board, the lower end of the board is wrapped in the packing layer behind the abutment, the bottom of the board is provided with a sliding layer, and the first elastic layer is provided between the abutment and the packing layer behind the abutment. The packing layer, sliding layer and first elastic layer behind the abutment buffer the thermal expansion and contraction of the bridge body, thereby canceling the telescopic device. The invention integrates the advantages of the composite structure and the seamless bridge, improves the seismic performance and service life of the bridge, and effectively The utility model solves the durability problem of the existing concrete bridge expansion device, has good mechanical performance and bearing capacity, and has a short construction period and low construction, operation and maintenance costs.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明中基础桩4的俯视图；Fig. 2 is the top view of foundation pile 4 among the present invention;
图3为本发明中基础桩4的结构示意图；Fig. 3 is the structural representation of foundation pile 4 among the present invention;
图4为本发明的一种的结构示意图；Fig. 4 is a kind of structural representation of the present invention;
图5为本发明的另一种的结构示意图。Fig. 5 is another structural schematic diagram of the present invention.
其中、1为桥跨结构钢主梁、2为混凝土桥面板、3为桥台、4为基础桩、5为第二弹性层、6为保护层、7为桩帽、8为搭板、9为台后填料层、10为接线路面、11为支座、12为防水层、13为滑动层、14为缓冲层、15为枕梁、16为排水设施、17为桥面铺装、18为栓钉、19为开孔连接件。Among them, 1 is the steel girder of bridge span structure, 2 is the concrete bridge deck, 3 is the abutment, 4 is the foundation pile, 5 is the second elastic layer, 6 is the protective layer, 7 is the pile cap, 8 is the slab, 9 10 is the connection line surface, 11 is the support, 12 is the waterproof layer, 13 is the sliding layer, 14 is the buffer layer, 15 is the corbel, 16 is the drainage facility, 17 is the bridge deck pavement, 18 is Studs, 19 are perforated connectors.
具体实施方式detailed description
下面结合附图对本发明做进一步详细描述：The present invention is described in further detail below in conjunction with accompanying drawing:
参考图1、图2、图3、图4及图5，本发明所述的钢混组合结构整体式无缝桥包括若干对基础桩4、以及与各对基础桩4相对应的桥跨结构钢主梁1、混凝土桥面板2、接线路面10、台后填料层9、基础桩4、两个桥台3、以及若干第一连接件；各对基础桩4竖立架设于施工位置，桥台3通过桩帽7固定于基础桩4上，桥跨结构钢主梁1的一端固定于一个基础桩4上的桥台3上，桥跨结构钢主梁1的另一端固定于另一个基础桩4上的桥台3上，混凝土桥面板2铺设于桥跨结构钢主梁1的上表面，且混凝土桥面板2的两端均延伸到桥台3的外侧，混凝土桥面板2的两端均设有搭板8，接线路面10的端部位于搭板8上，接线路面10与搭板8相连，混凝土桥面板2的上表面设有桥面铺装17，第一连接件的一端浇筑于桥台3的混凝土中，第一连接件的另一端焊接于桥跨结构钢主梁1端部，搭板8的下端包裹于台后填料层9内，搭板8的下表面设有滑动层13，桥台3与台后填料层9之间设有第一弹性层。Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the integral seamless bridge of steel-concrete composite structure according to the present invention includes several pairs of foundation piles 4 and bridge span structures corresponding to each pair of foundation piles 4 Steel girder 1, concrete bridge deck 2, connection line surface 10, backfill layer 9, foundation pile 4, two abutments 3, and several first connectors; each pair of foundation piles 4 is erected at the construction position, and the abutment 3 is fixed on the foundation pile 4 through the pile cap 7, one end of the span structural steel girder 1 is fixed on the abutment 3 on one foundation pile 4, and the other end of the span structural steel girder 1 is fixed on another foundation pile On the abutment 3 above 4, the concrete bridge deck 2 is laid on the upper surface of the bridge structural steel girder 1, and both ends of the concrete bridge deck 2 extend to the outside of the abutment 3, and both ends of the concrete bridge deck 2 are There is a board 8, the end of the connection line surface 10 is located on the board 8, the connection line surface 10 is connected to the board 8, the upper surface of the concrete bridge deck 2 is provided with a bridge deck pavement 17, and one end of the first connector is poured on In the concrete of the abutment 3, the other end of the first connector is welded to the end of the span structural steel girder 1, the lower end of the strapping plate 8 is wrapped in the filler layer 9 behind the abutment, and the lower surface of the strapping plate 8 is provided with a sliding layer 13. A first elastic layer is provided between the abutment 3 and the post-abutment packing layer 9 .
本发明所述的桥跨结构钢主梁1的横截面为工字型结构；第一连接件为栓钉18或开孔连接件19；基础桩4为H型钢桩，基础桩4的外壁上套接有保护层6，保护层6与基础桩4之间设置有由细沙填充而成的第二弹性层5；基础桩4与桩帽7之间设有第二连接件，第二连接件的两端分别内嵌固定于基础桩4及桩帽7内；桩帽7与桥台3之间设有钢筋，钢筋的两端分别内嵌固定于桩帽7与桥台3内；搭板8与桥台3翼墙的位置设有支座11以及用于进行防水的防水层12；搭板8的端部设有缓冲层14，缓冲层14的底部下方设有枕梁15；台后填料层9内设有排水系统16。The cross-section of the steel girder 1 of the bridge span structure according to the present invention is an I-shaped structure; the first connector is a stud 18 or an opening connector 19; the foundation pile 4 is an H-shaped steel pile, and the outer wall of the foundation pile 4 A protective layer 6 is sleeved, and a second elastic layer 5 filled with fine sand is arranged between the protective layer 6 and the foundation pile 4; a second connecting piece is arranged between the foundation pile 4 and the pile cap 7, and the second connection The two ends of the piece are respectively embedded and fixed in the foundation pile 4 and the pile cap 7; steel bars are arranged between the pile cap 7 and the abutment 3, and the two ends of the steel bars are respectively embedded and fixed in the pile cap 7 and the abutment 3; The position of the board 8 and the wing wall of the abutment 3 is provided with a support 11 and a waterproof layer 12 for waterproofing; the end of the board 8 is provided with a buffer layer 14, and the bottom of the buffer layer 14 is provided with a corbel 15; A drainage system 16 is arranged in the rear packing layer 9 .
本发明的施工过程为：Construction process of the present invention is:
在工厂中完成桥跨结构钢主梁1和混凝土桥面板2的预制，钢主梁1的端部焊接好开孔连接件19或栓钉18，选择基础桩的截面尺寸，进行基础桩4、保护层6和第二弹性层5的施工，再绑扎桩帽7内的钢筋，并给桩帽7和部分桥台3中浇注混凝土；再施工第二弹性层5、台后填料层9、排水设施16、滑动层13、缓冲层14及枕梁15；然后将预制好的桥跨结构钢主梁1调运至施工现场，并完成桥跨结构钢主梁1的吊装，利用第一连接件将钢主梁1与桥台3连接成整体，然后再进行混凝土桥面板2及搭板8的施工；最后进行桥面铺装17及接线路面10的施工。Complete the prefabrication of the steel main girder 1 and the concrete bridge deck 2 of the bridge span structure in the factory, the end of the steel main girder 1 is welded with the opening connector 19 or the stud 18, select the cross-sectional size of the foundation pile, and carry out the foundation pile 4, The construction of the protective layer 6 and the second elastic layer 5, then bind the steel bars in the pile cap 7, and pour concrete into the pile cap 7 and part of the abutment 3; then construct the second elastic layer 5, the backfill layer 9, the drainage Facilities 16, sliding layer 13, buffer layer 14 and corbel 15; then the prefabricated span structural steel girder 1 is transported to the construction site, and the hoisting of the bridge span structural steel girder 1 is completed, and the first connector is used to The steel girder 1 and the abutment 3 are connected as a whole, and then the concrete bridge deck 2 and the butting slab 8 are constructed; finally, the bridge deck pavement 17 and the connecting line surface 10 are constructed.
以上所述，仅是本发明的较佳实施例，并非对本发明作任何限制，凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变化，均仍属于本发明技术方案的保护范围内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. All simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technical aspects of the present invention. within the scope of protection of the scheme.
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