CN108301317B - Assembled pier structure and construction method thereof - Google Patents
Assembled pier structure and construction method thereof Download PDFInfo
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- CN108301317B CN108301317B CN201810337447.6A CN201810337447A CN108301317B CN 108301317 B CN108301317 B CN 108301317B CN 201810337447 A CN201810337447 A CN 201810337447A CN 108301317 B CN108301317 B CN 108301317B
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 151
- 239000010959 steel Substances 0.000 claims abstract description 151
- 239000004567 concrete Substances 0.000 claims abstract description 37
- 230000002787 reinforcement Effects 0.000 claims description 13
- 238000009415 formwork Methods 0.000 claims description 11
- 238000011065 in-situ storage Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
本发明公开一种装配式桥墩构造及其施工方法，预制桥墩墩身制作和现浇柱墩基础浇筑完成，再通过浇筑于预制桥墩墩身的墩身纵筋伸长段、现浇柱墩基础内部的钢筋伸长段固定连接，将预制桥墩墩身和现浇柱墩基础确定位置，最后向预制桥墩墩身的开孔钢管内浇筑混凝土，直至墩身混凝土充满连接段和钢管内部，完成桥墩各部分装配。本发明引入预制桥墩墩身、现浇柱墩基础和连接段三部分组成的装配式体系，解决了现有装配式桥墩中桥墩与基础支撑难的问题，保证构件装配过程的可靠性；解决了现有装配式桥墩中连接段混凝土无法浇筑密实的问题，保证构件装配后的整体性和牢固性；本发明对桥墩墩底塑性铰区域进行局部加强，提高了桥墩的抗剪和耗能抗震能力。
The invention discloses a prefabricated bridge pier structure and a construction method thereof. The production of the prefabricated bridge pier body and the pouring of the cast-in-place column pier foundation are completed. The internal steel extension sections are fixedly connected, and the prefabricated pier body and the cast-in-place column pier foundation are positioned. Finally, concrete is poured into the open steel pipe of the prefabricated pier body until the concrete of the pier body fills the connecting section and the inside of the steel pipe, and the bridge pier is completed. Assembling all parts. The invention introduces a prefabricated bridge pier body, a cast-in-place column pier foundation and a connecting section, which solves the problem of difficulty in supporting the bridge pier and foundation in the existing prefabricated bridge piers, ensures the reliability of the component assembly process, and solves the problem of The existing prefabricated bridge pier has the problem that the connecting section concrete cannot be poured densely to ensure the integrity and firmness of the components after assembly; the present invention locally strengthens the plastic hinge area at the bottom of the bridge pier to improve the shear resistance, energy consumption and earthquake resistance of the bridge pier. .
Description
技术领域Technical field
本发明涉及桥梁工程建设技术领域，特别是涉及一种装配式桥墩构造及其施工方法。The invention relates to the technical field of bridge engineering construction, and in particular to an assembled bridge pier structure and a construction method thereof.
背景技术Background technique
装配式桥墩是将桥墩沿竖向模块化拆分为数个构件，如盖梁(墩帽)、墩身、承台、桩基等，在工厂或者预制场地上进行制作，然后运输至施工场地进行现场拼装。与现浇式桥墩相比，其优点主要有：工厂化预制与现场其他阶段施工可同时进行，缩短工期；工厂标准化制作，利于质量保证，降低人力成本；利于环保且复杂气候及环境下适应性更强。Prefabricated piers are vertically modular split piers into several components, such as cover beams (pier caps), pier bodies, caps, pile foundations, etc. They are manufactured in factories or prefabricated sites and then transported to the construction site for construction. Assembled on site. Compared with cast-in-place piers, its main advantages are: factory prefabrication and other stages of on-site construction can be carried out at the same time, shortening the construction period; standardized production in the factory is conducive to quality assurance and reducing labor costs; it is conducive to environmental protection and adaptability to complex climates and environments Stronger.
目前，我国实际工程中通常采用将预制好的多节桥墩墩身进行拼装的方式进行连接，这种拼装连接方法需要在桥墩墩身预制节段内预埋钢筋连接套筒。随着桥墩墩身高度的增加，桥墩墩身的节段大量增加，同时需要预埋的钢筋连接套筒数量也相应增加，大大提高了制造桥墩立柱的成本。At present, in actual projects in my country, prefabricated multi-section bridge pier bodies are usually connected by assembling them. This assembly connection method requires prefabricated steel connecting sleeves in the prefabricated sections of the bridge pier body. As the height of the bridge pier body increases, the segments of the bridge pier body increase significantly, and the number of pre-embedded steel connecting sleeves also increases accordingly, which greatly increases the cost of manufacturing bridge pier columns.
目前比较常用的另一种预制拼装连接方法，借助在立柱预留的通孔内穿设预应力钢绞线的方式将立柱预制节段连接成一整体。如中国专利CN103374881A公开了一种节段预制拼装桥墩结构体系，包括承台，承台上设置有墩身，墩身与承台设有预应力钢筋，墩身由多个相互连接的预制钢筋混凝土节段组成，预制钢筋混凝土节段内预留预应力孔道，预应力钢筋穿设于预应力孔道内，预应力钢筋的一端与位于承台的锚固端连接，预应力钢筋的另一端与位于墩身顶部的锚固端连接。这种方法在节段拼装桥墩多采用胶接缝连接，采用后张体内预应力的方式将节段连接成整体，然而，节段连接面间往往由于接触不密实会造成预应力钢筋或钢铰线锈蚀，在拼装施工过程中对各部件之间的准确定位和灌浆要求，施工工序复杂，导致装配式桥墩整体性较差。Another prefabricated assembly connection method that is more commonly used at present is to connect the prefabricated segments of the columns into a whole by inserting prestressed steel strands in the reserved through holes of the columns. For example, Chinese patent CN103374881A discloses a segmented prefabricated assembled bridge pier structure system, which includes a cap platform. A pier body is provided on the cap platform. The pier body and cap platform are provided with prestressed steel bars. The pier body is composed of multiple interconnected prefabricated reinforced concrete It is composed of segments. Prestressed holes are reserved in the precast reinforced concrete segments. Prestressed steel bars are inserted into the prestressed holes. One end of the prestressed steel bars is connected to the anchor end located on the cap. The other end of the prestressed steel bars is connected to the anchor end located on the pier. The anchor end connection at the top of the body. In this method, glue joints are often used to connect segmental piers, and post-tensioning internal prestressing is used to connect the segments into a whole. However, the contact between the segment connection surfaces is often not dense, resulting in prestressed steel bars or steel hinges. Line corrosion, accurate positioning and grouting requirements between components during the assembly and construction process, and complex construction procedures have resulted in poor integrity of the prefabricated bridge piers.
我国正处于大规模交通建设时期，城市高架、高铁和跨海桥墩等正是下部结构节段拼装施工技术的适用领域。因此，本领域技术人员亟需研究一种预制桥墩墩身节段内不需要设置预应力钢绞线和预埋钢筋连接套筒、施工成本低又进度快的预制装配式桥墩。Our country is in a period of large-scale transportation construction, and urban viaducts, high-speed rails, and cross-sea bridge piers are the applicable fields of substructure segment assembly construction technology. Therefore, those skilled in the art urgently need to study a prefabricated assembled bridge pier that does not require prestressed steel strands and pre-embedded steel bar connecting sleeves in the pier body segments, and has low construction cost and fast progress.
发明内容Contents of the invention
本发明所要求解决的技术问题是针对上述现有问题的不足，提供一种桥梁整体装配式桥墩的构造形式及施工方法。本发明采用预制桥墩墩身和现浇桥墩基础和连接段组成的装配式桥墩构造形式，桥墩底端塑性铰区域进行局部加强，提升装配化桥梁的稳定性和抗震性能；采用先预制桥墩墩身和现浇桥墩基础，再后浇钢管混凝土和的新型施工方法，保证连接段混凝土浇筑的密实性，简化预制构件拼装连接工艺以提高工程效率及可靠性。The technical problem required to be solved by the present invention is to provide a structural form and construction method of integrally assembled bridge piers to address the shortcomings of the above-mentioned existing problems. This invention adopts a prefabricated bridge pier structure consisting of a prefabricated bridge pier body and a cast-in-place pier foundation and connecting section. The plastic hinge area at the bottom end of the bridge pier is locally strengthened to improve the stability and seismic performance of the assembled bridge; the bridge pier body is prefabricated. The new construction method of cast-in-situ bridge pier foundation and post-cast steel tube concrete ensures the tightness of concrete pouring in the connecting section and simplifies the assembly and connection process of prefabricated components to improve project efficiency and reliability.
本发明的技术方案：Technical solution of the present invention:
一种装配式桥墩构造，包括预制桥墩墩身1、现浇柱墩基础2和连接段3，预制桥墩墩身1通过连接段3与现浇柱墩基础2固定连接；An assembled bridge pier structure includes a prefabricated bridge pier body 1, a cast-in-place column pier foundation 2 and a connecting section 3. The prefabricated bridge pier body 1 is fixedly connected to the cast-in-place column pier foundation 2 through the connecting section 3;
所述的预制桥墩墩身1包括钢管4、墩身混凝土5和墩身纵筋6，钢管4位于预制桥墩墩身1内部中心，其为变截面构造，钢管上部41相对于钢管下部42细，钢管上部41与钢管下部42通过中间的环形钢板43连接；钢管下部42沿预制桥墩墩身1底部设有一段伸长段，伸长段四周开有上、下两排开孔；钢管4外设有一层墩身混凝土5和墩身纵筋6，墩身纵筋6呈圆形分布，墩身纵筋6沿预制桥墩墩身1底部有一段伸长段。The prefabricated bridge pier body 1 includes a steel pipe 4, pier body concrete 5 and pier body longitudinal bars 6. The steel pipe 4 is located at the inner center of the prefabricated bridge pier body 1. It has a variable cross-section structure. The upper part 41 of the steel pipe is thinner than the lower part 42 of the steel pipe. The upper part 41 of the steel pipe and the lower part 42 of the steel pipe are connected through the annular steel plate 43 in the middle; the lower part 42 of the steel pipe is provided with an extension section along the bottom of the prefabricated bridge pier body 1, and there are two rows of upper and lower openings around the extension section; the steel pipe 4 has peripheral There is a layer of pier body concrete 5 and pier body longitudinal bars 6. The pier body longitudinal bars 6 are distributed in a circle. The pier body longitudinal bars 6 have an extended section along the bottom of the prefabricated bridge pier pier body 1.
所述的钢管上部41的直径不小于预制桥墩墩身1直径的五分之一，钢管下部42的直径不小于预制桥墩墩身1直径的三分之一，钢管下部42长度不小于预制桥墩墩身1直径的两倍。The diameter of the upper part 41 of the steel pipe is not less than one fifth of the diameter of the prefabricated bridge pier body 1, the diameter of the lower part 42 of the steel pipe is not less than one third of the diameter of the prefabricated bridge pier body 1, and the length of the lower part 42 of the steel pipe is not less than the length of the prefabricated bridge pier body 1. twice the diameter of body 1.
所述的钢管下部42的伸长段设有的开孔形状为圆形，其直径为钢管下部42直径的三分之一，上、下两排开孔间的距离为两倍的开孔直径。The elongated section of the lower part of the steel pipe 42 is provided with openings that are circular in shape and whose diameter is one third of the diameter of the lower part of the steel pipe 42. The distance between the upper and lower rows of openings is twice the diameter of the openings. .
所述的钢管下部42的伸长段长度不小于400mm加墩身纵筋6直径的十倍的和，墩身纵筋6伸长段长度不小于钢管下部42伸长段的三分之二，墩身纵筋6伸长段的纵筋间距与现浇柱墩基础2钢筋伸长段的钢筋间距相等。The length of the extension section of the lower part 42 of the steel pipe is not less than the sum of 400mm and ten times the diameter of the longitudinal reinforcement 6 of the pier body, and the length of the extension section of the longitudinal reinforcement 6 of the pier body is not less than two-thirds of the extension section of the lower part 42 of the steel pipe, The spacing between the longitudinal bars of the extended section of the longitudinal bars 6 of the pier body is equal to the spacing of the longitudinal bars of the extended section of the cast-in-situ column pier foundation 2.
现浇柱墩基础2由基础混凝土7和柱墩基础钢筋8组成，现浇柱墩基础2整体呈圆柱，现浇柱墩基础2顶部中央设有凹槽，凹槽呈圆形；凹槽直径与钢管下部42直径相同，凹槽深度不小于现浇柱墩基础2六分之一；柱墩基础钢筋8中与凹槽内侧距离最小的一排纵筋，沿现浇柱墩基础2顶部有一段伸长段；柱墩基础钢筋8伸长段长度不小于钢管下部伸长段的三分之二。The cast-in-place column pier foundation 2 is composed of foundation concrete 7 and column pier foundation steel bars 8. The cast-in-place column pier foundation 2 is in the shape of a cylinder. The cast-in-place column pier foundation 2 is provided with a groove in the center of the top, and the groove is circular; the diameter of the groove The diameter of the lower part 42 of the steel pipe is the same, and the depth of the groove is not less than one-sixth of the cast-in-place column pier foundation 2; the row of longitudinal bars with the smallest distance from the inside of the groove among the column pier foundation steel bars 8, along the top of the cast-in-place column pier foundation 2 An extended section; the length of the extended section of the column pier foundation steel bar 8 shall not be less than two-thirds of the extended section of the lower part of the steel pipe.
该装配式桥墩构造施工方法，步骤如下：The construction method of this prefabricated bridge pier structure is as follows:
步骤一、制作预制桥墩墩身1：首先切割钢管上部41、钢管下部42和环形钢板43，将钢管上部41、环形钢板43和钢管下部42依次通过焊接的方式固定在一起；再绑扎预制桥墩墩身1内的桥墩墩身纵筋6，将绑扎完成的由桥墩墩身纵筋6构成的桥墩纵筋笼临时固定在钢管4外侧；然后在桥墩纵筋笼外侧架立模板，在钢管4外侧浇筑墩身混凝土5，预制桥墩墩身1制作完成；Step 1. Make the prefabricated bridge pier body 1: first cut the upper part of the steel pipe 41, the lower part of the steel pipe 42 and the annular steel plate 43, and fix the upper part of the steel pipe 41, the annular steel plate 43 and the lower part of the steel pipe 42 together by welding in sequence; then tie the prefabricated bridge piers. The longitudinal reinforcements 6 of the pier body 1 are temporarily fixed on the outside of the steel pipe 4; The pier body concrete 5 is poured, and the prefabricated pier body 1 is completed;
步骤二、制作现浇柱墩基础2：首先切割柱墩基础钢筋8，绑扎现浇柱墩基础2内的柱墩基础钢筋8成柱墩基础钢筋笼；然后在柱墩基础钢筋笼外侧架立模板，再架立柱墩基础顶部中央凹槽的圆形模板；最后浇筑基础混凝土7，现浇柱墩基础制作完成；Step 2: Make the cast-in-place column pier foundation 2: first cut the column pier foundation steel bars 8, and tie the column pier foundation steel bars 8 in the cast-in-place column pier foundation 2 to form the column pier foundation steel bar cage; then erect it outside the column pier foundation steel bar cage formwork, and then set up a circular formwork with a central groove on the top of the column pier foundation; finally pour foundation concrete 7, and the cast-in-place column pier foundation is completed;
步骤三、浇筑连接段3，将桥墩各部分装配：首先将预制桥墩墩身1钢管下部42与现浇柱墩基础2凹槽对准精确定位，吊装预制桥墩墩身1，将预制桥墩墩身1与现浇柱墩基础2定位；然后把预制桥墩墩身1墩身纵筋6伸长段与现浇柱墩基础2钢筋伸长段焊接，将预制桥墩墩身1与现浇柱墩基础2初步固定；再在连接段3架立模板，向钢管4内浇筑混凝土，边浇筑边震荡，直至墩身混凝土5充满连接段3和钢管4内部，完成桥墩各部分装配。Step 3: Pour the connecting section 3 and assemble the various parts of the bridge pier: first, align the lower part 42 of the steel pipe of the prefabricated bridge pier body 1 with the groove of the cast-in-place column pier foundation 2, hoist the prefabricated bridge pier body 1, and assemble the prefabricated bridge pier body 1. 1 is positioned with the cast-in-place column pier foundation 2; then weld the extended section of the longitudinal bars 6 of the precast pier body 1 and the cast-in-place column pier foundation 2, and weld the precast pier body 1 to the cast-in-place column pier foundation. 2. Preliminary fixation; then erect the formwork on the connecting section 3, pour concrete into the steel pipe 4, and vibrate while pouring, until the concrete 5 of the pier body fills the inside of the connecting section 3 and the steel pipe 4, and the assembly of each part of the pier is completed.
与现有装配式桥墩技术相比，本发明的效果和益处是：Compared with the existing assembled bridge pier technology, the effects and benefits of the present invention are:
一、本发明引入预制桥墩墩身、现浇柱墩基础和连接段三部分组成的装配式体系，解决了现有装配式桥墩中桥墩与基础支撑难的问题，保证构件装配过程的可靠性。此装配式体系通过预制桥墩墩身的纵筋伸长段和现浇柱墩基础内部的钢筋伸长段固定连接，提高了预制桥墩预制桥墩墩身和现浇柱墩基础之间的支撑强度，保证了桥墩墩身的稳定性；通过预制桥墩墩身钢管下部和现浇柱墩基础凹槽相同的尺寸设置确保预制桥墩墩身和现浇柱墩基础精准定位，克服了施工过程预制桥墩墩身难以支撑和垂直度难以控制的问题，比目前常见的预制节段拼装装配式桥墩连接更可靠。1. The present invention introduces a prefabricated pier body, a cast-in-place column pier foundation and a connecting section, which solves the problem of difficulty in supporting the pier and foundation in existing prefabricated piers and ensures the reliability of the component assembly process. This prefabricated system is fixedly connected by the longitudinal steel extension section of the precast pier body and the steel extension section inside the cast-in-place column pier foundation, which improves the support strength between the precast bridge pier body and the cast-in-place column pier foundation. The stability of the pier body is ensured; the lower part of the steel pipe of the prefabricated pier body and the groove of the cast-in-place column pier foundation are set to the same size to ensure the precise positioning of the prefabricated bridge pier body and the cast-in-place column pier foundation, overcoming the difficulties faced by the prefabricated bridge pier body during the construction process. The problem of difficulty in supporting and controlling the verticality is more reliable than the currently common prefabricated segment-assembled bridge pier connection.
二、本发明提出通过钢管下部开口向桥墩下部浇筑混凝土的施工方式，解决了现有装配式桥墩中连接段混凝土无法浇筑密实的问题，保证构件装配后的整体性和牢固性。目前我国实际工程中节段拼装桥墩多采用湿接缝连接，采用后张体内预应力的方式将节段连接成整体，然而节段连接面间往往由于接触不密实会造成钢棒或钢铰线锈蚀，此外，还需在预留管道内灌浆，施工工序复杂；本施工方式先将预制桥墩墩身与现浇柱墩基础初步固定，再在连接段架立少量模板，向钢管内浇筑混凝土，保证装配式桥墩连接段混凝土浇筑密实的问题。2. The present invention proposes a construction method of pouring concrete into the lower part of the bridge pier through the lower opening of the steel pipe, which solves the problem that the concrete in the connecting section of the existing prefabricated bridge pier cannot be poured densely, and ensures the integrity and firmness of the components after assembly. At present, in actual projects in my country, segmental assembled bridge piers are mostly connected by wet joints, and the segments are connected into a whole by post-tensioning internal prestressing. However, the connection surfaces of the segments are often not dense enough to cause steel bars or steel hinges to form. Corrosion, in addition, grouting needs to be done in the reserved pipes, and the construction process is complicated; in this construction method, the prefabricated pier body and the cast-in-place column pier foundation are initially fixed, and then a small amount of formwork is erected in the connecting section, and concrete is poured into the steel pipe. The problem of ensuring dense concrete pouring in the connection section of prefabricated bridge piers.
三、本发明对于预制桥墩主体构件引入核心钢管混凝土柱的结构形式，这种结构形式结合了普通钢筋混凝土柱与钢管混凝土柱两者的优点，对桥墩墩底塑性铰区域进行局部加强，提高了桥墩的抗剪和耗能抗震能力。预制桥墩主体构件引入的核心钢管混凝土柱结构形式利用钢管混凝土抗压和抗剪能力强、位移延性好、耗能能力强的优点，大幅提高桥墩的抗震性能；同时，由于有墩底核心钢管混凝土的支撑作用，可以减小桥墩的残余变形，提高了墩底塑性铰的转动能力，提髙震后的可修复性和应急救灾功能，可大幅度降低由于桥梁破坏引起的直接和间接地震损失。3. The present invention introduces the structural form of core concrete-filled steel tube columns into the main components of the prefabricated bridge piers. This structural form combines the advantages of ordinary reinforced concrete columns and concrete-filled steel tube columns, locally strengthens the plastic hinge area at the bottom of the pier, and improves the Shear and energy dissipation resistance of bridge piers. The core steel tube concrete column structure introduced into the main component of the prefabricated bridge pier takes advantage of the advantages of strong compressive and shear resistance, good displacement ductility, and strong energy dissipation capacity of the steel tube concrete to greatly improve the seismic performance of the bridge pier; at the same time, due to the core steel tube concrete at the pier bottom The supporting function can reduce the residual deformation of the bridge pier, improve the rotation capacity of the plastic hinge at the bottom of the pier, improve the repairability and emergency disaster relief function after high earthquakes, and can significantly reduce the direct and indirect earthquake losses caused by bridge damage.
附图说明Description of the drawings
图1为本发明的整体结构示意图。Figure 1 is a schematic diagram of the overall structure of the present invention.
图2为本发明的结构内部剖面示意图。Figure 2 is a schematic internal cross-sectional view of the structure of the present invention.
图3为本发明的钢管上部截面处剖面示意图。Figure 3 is a schematic cross-sectional view of the upper section of the steel pipe of the present invention.
图4为本发明的钢管下部截面处剖面示意图。Figure 4 is a schematic cross-sectional view of the lower section of the steel pipe of the present invention.
图5为本发明的现浇柱墩基础剖面示意图。Figure 5 is a schematic cross-sectional view of the cast-in-place column pier foundation of the present invention.
图6为本发明的预制桥墩墩身剖面示意图。Figure 6 is a schematic cross-sectional view of the prefabricated bridge pier body of the present invention.
图7为本发明的预制桥墩墩身与现浇柱墩基础的连接段结构示意图。Figure 7 is a schematic structural diagram of the connection section between the prefabricated bridge pier body and the cast-in-situ column pier foundation of the present invention.
图8为本发明的整体结构装配施工示意图。Figure 8 is a schematic diagram of the overall structure assembly and construction of the present invention.
图9为本发明的预制桥墩墩身与现浇柱墩基础装配施工过程中示意图。Figure 9 is a schematic diagram during the assembly and construction process of the prefabricated bridge pier body and cast-in-situ column pier foundation of the present invention.
图中：1预制桥墩墩身；2现浇柱墩基础；3连接段；4钢管；41钢管上部；42钢管下部；43环形钢板；5墩身混凝土；6墩身纵筋；7基础混凝土；8柱墩基础钢筋。In the picture: 1 precast pier body; 2 cast-in-place column pier foundation; 3 connecting section; 4 steel pipe; 41 steel pipe upper part; 42 steel pipe lower part; 43 ring steel plate; 5 pier body concrete; 6 pier body longitudinal reinforcement; 7 foundation concrete; 8-column pier foundation reinforcement.
具体实施方式Detailed ways
以下结合技术方案(和附图)详细叙述本发明的具体实施方式。The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions (and drawings).
本发明的一种装配式桥墩构造及其施工方法，如图1-9所示。An assembled bridge pier structure and its construction method according to the present invention are shown in Figures 1-9.
一种装配式桥墩构造，包括预制桥墩墩身1、现浇柱墩基础2和连接段3，预制桥墩墩身1通过连接段3与现浇柱墩基础2固定连接；An assembled bridge pier structure includes a prefabricated bridge pier body 1, a cast-in-place column pier foundation 2 and a connecting section 3. The prefabricated bridge pier body 1 is fixedly connected to the cast-in-place column pier foundation 2 through the connecting section 3;
所述的预制桥墩墩身1包括钢管4、墩身混凝土5和墩身纵筋6，钢管4位于预制桥墩墩身1内部中心，其为变截面构造，钢管上部41相对于钢管下部42细，钢管上部41与钢管下部42通过中间的环形钢板43连接；钢管下部42沿预制桥墩墩身1底部设有一段伸长段，伸长段四周开有上、下两排开孔；钢管4外设有一层墩身混凝土5和墩身纵筋6，墩身纵筋6呈圆形分布，墩身纵筋6沿预制桥墩墩身1底部有一段伸长段。The prefabricated bridge pier body 1 includes a steel pipe 4, pier body concrete 5 and pier body longitudinal bars 6. The steel pipe 4 is located at the center of the interior of the prefabricated bridge pier body 1. It has a variable cross-section structure. The upper part 41 of the steel pipe is thinner than the lower part 42 of the steel pipe. The upper part 41 of the steel pipe and the lower part 42 of the steel pipe are connected through the middle annular steel plate 43; the lower part 42 of the steel pipe is provided with an extension section along the bottom of the prefabricated bridge pier body 1, and there are two rows of upper and lower openings around the extension section; the steel pipe 4 has peripheral There is a layer of pier body concrete 5 and pier body longitudinal bars 6. The pier body longitudinal bars 6 are distributed in a circle. The pier body longitudinal bars 6 have an extended section along the bottom of the prefabricated bridge pier pier body 1.
所述的钢管上部41的直径不小于预制桥墩墩身1直径的五分之一，钢管下部42的直径不小于预制桥墩墩身1直径的三分之一，钢管下部42长度不小于预制桥墩墩身1直径的两倍。The diameter of the upper part 41 of the steel pipe is not less than one fifth of the diameter of the prefabricated bridge pier body 1, the diameter of the lower part 42 of the steel pipe is not less than one third of the diameter of the prefabricated bridge pier body 1, and the length of the lower part 42 of the steel pipe is not less than the length of the prefabricated bridge pier body 1. twice the diameter of body 1.
所述的钢管下部42的伸长段设有的开孔形状为圆形，其直径为钢管下部42直径的三分之一，上、下两排开孔间的距离为两倍的开孔直径。The elongated section of the lower part of the steel pipe 42 is provided with openings that are circular in shape and whose diameter is one third of the diameter of the lower part of the steel pipe 42. The distance between the upper and lower rows of openings is twice the diameter of the openings. .
所述的钢管下部42的伸长段长度不小于400mm加墩身纵筋6直径的十倍的和，墩身纵筋6伸长段长度不小于钢管下部42伸长段的三分之二，墩身纵筋6伸长段的纵筋间距与现浇柱墩基础2钢筋伸长段的钢筋间距相等。The length of the extension section of the lower part 42 of the steel pipe is not less than the sum of 400mm and ten times the diameter of the longitudinal reinforcement 6 of the pier body, and the length of the extension section of the longitudinal reinforcement 6 of the pier body is not less than two-thirds of the extension section of the lower part 42 of the steel pipe, The spacing between the longitudinal bars of the extended section of the longitudinal bars 6 of the pier body is equal to the spacing of the longitudinal bars of the extended section of the cast-in-situ column pier foundation 2.
现浇柱墩基础2由基础混凝土7和柱墩基础钢筋8组成，现浇柱墩基础2整体呈圆柱，现浇柱墩基础2顶部中央设有凹槽，凹槽呈圆形；凹槽直径与钢管下部42直径相同，凹槽深度不小于现浇柱墩基础2六分之一；柱墩基础钢筋8中与凹槽内侧距离最小的一排纵筋，沿现浇柱墩基础2顶部有一段伸长段；柱墩基础钢筋8伸长段长度不小于钢管下部伸长段的三分之二。The cast-in-place column pier foundation 2 is composed of foundation concrete 7 and column pier foundation steel bars 8. The cast-in-place column pier foundation 2 is in the shape of a cylinder. The cast-in-place column pier foundation 2 is provided with a groove in the center of the top, and the groove is circular; the diameter of the groove The diameter of the lower part 42 of the steel pipe is the same, and the depth of the groove is not less than one-sixth of the cast-in-place column pier foundation 2; the row of longitudinal bars with the smallest distance from the inside of the groove among the column pier foundation steel bars 8, along the top of the cast-in-place column pier foundation 2 An extended section; the length of the extended section of the column pier foundation steel bar 8 shall not be less than two-thirds of the extended section of the lower part of the steel pipe.
该装配式桥墩构造施工方法，步骤如下：The construction method of this prefabricated bridge pier structure is as follows:
步骤一、制作预制桥墩墩身1：首先切割钢管上部41、钢管下部42和环形钢板43，将钢管上部41、环形钢板43和钢管下部42依次通过焊接的方式固定在一起；再绑扎预制桥墩墩身1内的桥墩墩身纵筋6，将绑扎完成的由桥墩墩身纵筋6构成的桥墩纵筋笼临时固定在钢管4外侧；然后在桥墩纵筋笼外侧架立模板，在钢管4外侧浇筑墩身混凝土5，预制桥墩墩身1制作完成；Step 1. Make the prefabricated bridge pier body 1: first cut the upper part of the steel pipe 41, the lower part of the steel pipe 42 and the annular steel plate 43, and fix the upper part of the steel pipe 41, the annular steel plate 43 and the lower part of the steel pipe 42 together by welding in sequence; then tie the prefabricated bridge piers. The longitudinal reinforcements 6 of the pier body 1 are temporarily fixed on the outside of the steel pipe 4; The pier body concrete 5 is poured, and the prefabricated pier body 1 is completed;
步骤二、制作现浇柱墩基础2：首先切割柱墩基础钢筋8，绑扎现浇柱墩基础2内的柱墩基础钢筋8成柱墩基础钢筋笼；然后在柱墩基础钢筋笼外侧架立模板，再架立柱墩基础顶部中央凹槽的圆形模板；最后浇筑基础混凝土7，现浇柱墩基础制作完成；Step 2: Make the cast-in-place column pier foundation 2: first cut the column pier foundation steel bars 8, and tie the column pier foundation steel bars 8 in the cast-in-place column pier foundation 2 to form the column pier foundation steel bar cage; then erect it outside the column pier foundation steel bar cage formwork, and then set up a circular formwork with a central groove on the top of the column pier foundation; finally pour foundation concrete 7, and the cast-in-place column pier foundation is completed;
步骤三、浇筑连接段3，将桥墩各部分装配：首先将预制桥墩墩身1钢管下部42与现浇柱墩基础2凹槽对准精确定位，吊装预制桥墩墩身1，将预制桥墩墩身1与现浇柱墩基础2定位；然后把预制桥墩墩身1墩身纵筋6伸长段与现浇柱墩基础2钢筋伸长段焊接，将预制桥墩墩身1与现浇柱墩基础2初步固定；再在连接段3架立模板，向钢管4内浇筑混凝土，边浇筑边震荡，直至墩身混凝土5充满连接段3和钢管4内部，完成桥墩各部分装配。Step 3: Pour the connecting section 3 and assemble the various parts of the bridge pier: first, align the lower part 42 of the steel pipe of the prefabricated bridge pier body 1 with the groove of the cast-in-place column pier foundation 2, hoist the prefabricated bridge pier body 1, and assemble the prefabricated bridge pier body 1. 1 is positioned with the cast-in-place column pier foundation 2; then weld the extended section of the longitudinal bars 6 of the precast pier body 1 and the cast-in-place column pier foundation 2, and weld the precast pier body 1 to the cast-in-place column pier foundation. 2. Preliminary fixation; then erect the formwork on the connecting section 3, pour concrete into the steel pipe 4, and vibrate while pouring, until the concrete 5 of the pier body fills the inside of the connecting section 3 and the steel pipe 4, and the assembly of each part of the pier is completed.
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Families Citing this family (14)
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|---|---|---|---|---|
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| CN112411598A (en) * | 2020-11-26 | 2021-02-26 | 中铁大桥局集团第六工程有限公司 | Positioning device for anchor hole of prefabricated pier body foundation and construction method |
| CN113373797B (en) * | 2021-04-08 | 2022-06-03 | 东南大学 | Prefabricated assembled concrete anti-seismic pier structure and repairing method |
| CN114687294B (en) * | 2022-04-18 | 2024-11-08 | 重庆交通大学 | Prefabricated steel tube concrete and reinforced concrete assembled bridge and construction method thereof |
| CN117604882B (en) * | 2024-01-23 | 2024-04-09 | 安徽省交通规划设计研究总院股份有限公司 | Pier column and capping beam quick connection structure based on perforated steel pipe and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264411A (en) * | 1992-10-08 | 1994-09-20 | Keihan Concrete Kogyo Kk | Prefabrication method of bridge pier and bridge pier concrete block, reinforcing bar cage and inner form |
| JP2004131988A (en) * | 2002-10-09 | 2004-04-30 | Sumitomo Mitsui Construction Co Ltd | Precast block for pier / abutment, pier / abutment using the precast block, and method of construction of pier / abutment |
| CN204825619U (en) * | 2015-08-10 | 2015-12-02 | 江苏建筑职业技术学院 | Assembled concrete bridge mound |
| CN105970803A (en) * | 2016-06-03 | 2016-09-28 | 南京工业大学 | Shear-resistant energy dissipation device of assembled pier and construction method |
| CN107806010A (en) * | 2017-10-23 | 2018-03-16 | 南京林业大学 | A kind of assembled multiple tube seawater marine sand concrete bridge pier and preparation method |
-
2018
- 2018-04-10 CN CN201810337447.6A patent/CN108301317B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264411A (en) * | 1992-10-08 | 1994-09-20 | Keihan Concrete Kogyo Kk | Prefabrication method of bridge pier and bridge pier concrete block, reinforcing bar cage and inner form |
| JP2004131988A (en) * | 2002-10-09 | 2004-04-30 | Sumitomo Mitsui Construction Co Ltd | Precast block for pier / abutment, pier / abutment using the precast block, and method of construction of pier / abutment |
| CN204825619U (en) * | 2015-08-10 | 2015-12-02 | 江苏建筑职业技术学院 | Assembled concrete bridge mound |
| CN105970803A (en) * | 2016-06-03 | 2016-09-28 | 南京工业大学 | Shear-resistant energy dissipation device of assembled pier and construction method |
| CN107806010A (en) * | 2017-10-23 | 2018-03-16 | 南京林业大学 | A kind of assembled multiple tube seawater marine sand concrete bridge pier and preparation method |
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