CN105735112B - Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier - Google Patents

Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier Download PDF

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Publication number
CN105735112B
CN105735112B CN201610231802.2A CN201610231802A CN105735112B CN 105735112 B CN105735112 B CN 105735112B CN 201610231802 A CN201610231802 A CN 201610231802A CN 105735112 B CN105735112 B CN 105735112B
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bolt
steel pipe
prefabricated
punching
concrete
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CN105735112A (en
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贾俊峰
赵建瑜
张强
韩强
杜修力
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Beijing University of Technology
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Beijing University of Technology
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced
    • E01D2101/268Composite concrete-metal

Abstract

The invention discloses a bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier, and belongs to the field of bridge engineering. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier comprises precast rectangular concrete filled steel tube sections, pre-buried nodes, connecting plates, high-strength bolts and core penetration bolts; each precast concrete filled steel tube section consists of a steel tube section, concrete, reserved core penetration bolt hole channels, reserved bolt holes, precast screw caps, a sealing material and PVC (Polyvinyl Chloride) tubes; each pre-buried node consists of a precast rectangular concrete filled steel tube section, a foot plate, outside-stiffened ribs and anchor bolts; bolt holes and core penetration bolt holes are formed in each connecting plate according to bolt design positions; adjacent precast concrete filled steel tube sections are connected with each other by the connecting plates, the high-strength bolts and the core penetration bolts. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier has the characteristics of high anti-pressure and anti-shear bearing capacity, excellent anti-seismic property, easiness in factory production, convenience and rapidness in site operation, energy conservation, environmental friendliness and the like.

Description

Based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube
Technical field
The invention belongs to science of bridge building field, and in particular to Precast Concrete Segmental Bridges concrete pier of steel tube.
Background technology
One of significant challenge that current city bridge engineering construction is faced with is exactly that owner and resident tie except requiring bridge Beyond structure is safe and durable, it is also desirable to reduce the interference to surrounding traffic in bridge structure building course as far as possible, shorten due to bridge Various noises produced in traffic jam time, reduction engineering transportation vehicle and construction that beam construction is caused etc..These requirements promote The development of science of bridge building industrialization technology is entered, wherein prefabrication and assembly construction technology is exactly produced under this background, and sections is pre- Assembling technique processed provides favourable solution to build fast, efficient, safe, durable Urban Bridge engineering.Additionally, In long-span bridge engineering in gorge over strait, limited offshore construction platform space, complicated marine climate condition, strict environmental conservation The restriction of the factors such as condition, also promotes application of the section assembling construction technology in long-span bridge engineering over strait.
Precast Concrete Segmental Bridges technology is about research and applies relatively fewer in China, the Precast Concrete Segmental Bridges in existing engineering Technology is mainly used in bridge superstructure, and girder is divided into into some precast segments or whole opening prefabricated, by the whole hole of lifting machine Set up or boom segments are assembled.The Precast Concrete Segmental Bridges technology of bridge substructure is also in preliminary study stage, only portion Sea-crossing engineering is divided to employ the precast assembly technology of whole pier prefabrication cast-in-place wet joint connection, Urban Bridge substructure is also substantially not Using Precast Concrete Segmental Bridges technology.China is in mass transportation infrastructure construction period, in Urban Bridge, Oversea bridge Building course in, the quick building technology of bridge is more next with advantages such as its component crudy height, efficiency of construction height, environmental friendliness More it is subject to build owner and attention.Bridge structure prefabrication and assembly construction technology will be an important development side of following bridge engineering construction To.
In recent years, steel core concrete column has obtained more application in building structure, larger especially for the demand of carrying Tall and super tall R.C. buidings, concrete filled steel tube is more widely applied.Concrete filled steel tubular member makes full use of steel to resist The advantage with concrete anti-compression is drawn, not only with good bearing capacity, there is extraordinary antidetonation under horizontal reciprocating effect Performance, therefore suffers from engineering design and the favor of builder.But at present the concrete filled steel tubular member of major applications is also all base In cast in situs concrete filled steel tubular member.Chinese scholars propose various to steel core concrete column and beam connecting node structure construction Type of attachment.But research and development and application of the concrete filled steel tube in bridge pier at present are also considerably less.
The content of the invention
The present invention makes full use of the good vertical bearing capacity of concrete filled steel tube and anti-seismic performance, by itself and precast assembly skill Art combines, while avoiding or delaying the out-of-plane buckling of concrete filled steel tube end steel plate, there is provided one kind is based on bolted fast Speed Pinyin fills prefabricated rectangle concrete pier of steel tube, and the precast segment for meeting bridge industrialization building technology Bridge key member is spelled Assembling structure, it is easy to carry out the mechanized construction of prefabrication and assembly construction bridge pier, reduces Site Welding and prestressed stretch-draw workload.
Technical scheme is as follows:
The present invention relates to a kind of be based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube, belong to bridge work Journey field.It includes prefabricated rectangle steel pipe concrete segment (3), pre-buried node (6), cushion cap (5).Pre-buried node (6) is located at holds Between platform (5) and prefabricated rectangle steel pipe concrete segment (3).
Between adjacent prefabricated rectangle steel pipe concrete segment (3) and prefabricated rectangle steel pipe concrete segment (3) and pre- Bury between node (6), with connecting plate (4) joining place of adjacent steel pipe sections (11) is arranged on, by high-strength bolt (7) and wear Connecting plate (4), steel pipe sections (11) are attached fixation by core bolt;
Prefabricated rectangle steel pipe concrete segment (3) is by steel pipe sections (11), concrete (12), prefabricated nut (13), sealing Material (14) and pvc pipe (15) are constituted, and at the reserved punching bolt hole of steel pipe sections (11) pvc pipe (15) is laid, and reserve bolt The prefabricated nut of spot welding (13) at hole, unwelded one end of prefabricated nut (13) is sealed with encapsulant (14), concrete (12) it is cast in steel pipe sections (11);Pre-buried node (6) is by steel pipe sections (11), concrete (12), prefabricated nut (13), close Closure material (14) and pvc pipe (15), sole (10), adding rib (9) and crab-bolt (2) composition, sole (10), adding rib (9) Welded with steel pipe sections (11) with prefabricated nut (13), crab-bolt (2) is fixed on sole (10), it is pre- in steel pipe sections (11) Placement pvc pipe at punching bolt duct, concrete (12) is stayed to be cast in steel pipe sections (11);Connecting plate (4) is by design bolt Location arrangements High-strength bolt hole and punching bolt hole.
Pre-buried node (6) place, in its exposed junction prepared screw-bolt hole and punching duct;Embedment end welding sole (10) and Adding rib (9), sole (10) connection crab-bolt (2).The depth of embedded section embedment cushion cap (5) is short not less than concrete-filled rectangular steel tube 1.5 times of edge lengths, exposed junction length is the 1/2 of connecting plate (4) length.Pre-buried node (6) is mainly used in precast assembly pier stud It is connected with cushion cap (5), crab-bolt (2) is for improving the resistance to plucking and shear resistance of pre-buried node (6).
The design number of the high-strength bolt (7) and punching bolt (8) is by Pier Design side bearing capacity and single bolt The ratio for allowing antiskid bearing capacity is determined.Punching bolt (8) and high-strength bolt (7) are staggeredly arranged principle using interlacing, and adjacent two The punching bolt (8) in face prevents punching bolt (8) interior in prefabricated rectangle steel pipe concrete segment (3) not in same level position It is intersecting.The prepared screw-bolt hole on bolt hole and punching bolt hole and prefabricated rectangle steel pipe concrete segment (3) on connecting plate (4) It is corresponding with punching bolt hole position.
Steel pipe inner wall spot welding at described prefabricated nut (13) and prefabricated rectangle steel pipe concrete segment (3) prepared screw-bolt hole It is fixed, unwelded one end encapsulant (14) carry out pulp-water when sealing prevents casting concrete (12) overflow and pier stud outside It is internal that steam enters prefabricated rectangle steel pipe concrete segment (3).
Described connecting plate (4) and steel pipe sections (11) are closely sturdy ensureing high-strength bolt (7) under lateral forces With punching bolt (8) in artesian condition and tension, it is to avoid in by scissor state.
The internal diameter of the pvc pipe (15) should 1-2mm bigger than punching bolt (8) diameter, the installation for facilitating punching bolt is also The deformation of pvc pipe (15) during concreting leaves certain space.
The present invention has advantages below:Relative to cast-in-place pier stud, precast segment steel-pipe assembly performance of concrete column confined has good Resistance to compression, shear resistant capacity and anti-seismic performance, the material property of steel tension and concrete anti-compression can be given full play to.It is prefabricated Sections pier stud, directly using steel pipe as concrete-pouring template, saves prefabricated cost, improve production efficiency in prefabrication process. Precast Concrete Segmental Bridges pier stud installation is convenient, it is not necessary to live stretch-draw prestressing force, welding or grouting, reduces in-site installation engineering Amount.Quickly build for meizoseismal area bridge, the unfavorable society such as traffic delay, environmental pollution that reduction is caused due to bridge construction, Jing Ji affects to provide effective and rapid solution, while providing feasible program to be damaged to repair after the shake of later stage bridge.
Description of the drawings
Fig. 1 precast assembly concrete-filled rectangular steel tube bridge pier structure figures.
Fig. 2 .1 prefabricated rectangle steel pipe concrete segment structural maps and its horizontal sectional drawing.
Fig. 2 .2 are prefabricated rectangle steel pipe concrete segment A-A profiles.
Fig. 3 .1 are pre-buried joint structure figure.
The pre-buried node B-B profiles of Fig. 3 .2.
Fig. 4 connecting plate two adjacent surfaces structural maps.
Fig. 5 precast assembly concrete-filled rectangular steel tubes bridge pier assembly flow chart.
In figure:1-bent cap;2-crab-bolt;3-prefabricated rectangle steel pipe concrete segment;4-connecting plate;5-cushion cap;6— Pre-buried node;7-high-strength bolt;8-punching bolt;9-adding rib;10-sole;11-steel pipe sections;12-coagulation Soil;13-prefabricated nut;14-encapsulant;15-pvc pipe.
Specific embodiment
Below in conjunction with accompanying drawing 2.1- accompanying drawings 4, the specific embodiment of the present invention is further described.
Step 1:Processing prefabricated rectangle steel pipe concrete segment (3), connecting plate (4), pre-buried node (6), specifically include as Lower step:
1) prefabricated rectangle steel pipe concrete segment (3), in factory prefabricated rectangle steel pipe concrete segment (3), sheet material are made Rectangular steel pipe is welded into, its weld seam preferably adopts groove melt-through weld.Prepared screw-bolt hole, punching bolt hole are processed on steel pipe, will Spot welding after prefabricated nut (14) is alignd with prepared screw-bolt hole axle center is fixed, and nut does not adopt sealing with one end of steel pipe inner wall spot welding Material (14) is sealed, and reserved punching spiro keyhole position installs pvc pipe (15), by punching bolt (8) through pvc pipe (15) and Tighten interim fixation, casting concrete (12) vibrates maintenance, punching bolt (8) can be prevented in concreting and maintenance processes The movement of pvc pipe (15) and the deformation of steel pipe sections (11).
2) connecting plate (4) is made, in factory connecting plate (4) is made, sheet material is selected and cut by thickness, in sheet material The reserved High-strength bolt hole of relevant position processing and punching bolt hole.
3) pre-buried node (6) is made, in factory pre-buried node (6) is made, do not contained in prefabricated steel pipe concrete segment One end welding sole (10) of bolt hole and adding rib (9), sole (10) processing bolt hole connection crab-bolt (2).
4) foundation platform (5) and bent cap (1) are constructed, and foundation platform (5) and bent cap (1) are poured at the scene, and pre- by two Respectively buried foundation cushion cap (5) and bent cap (1) are poured to bury node (6).
Step 2:Prefabricated subsection bridge pier builds place assembly, as shown in figure 5, specifically including following steps:
1) foundation platform (5) of pre-buried node (6) is installed to design attitude and fixed.In pre-buried section during prefabrication of dismantling Interim fixed punching bolt (8) on point (6) and prefabricated rectangle steel pipe concrete segment (3).
2) by the prepared screw-bolt hole on connecting plate (4) lower end prepared screw-bolt hole and pre-buried node (6) top to it, installing is used for It is fixedly connected the high-strength bolt (7) and punching bolt (8) of connecting plate (4) and pre-buried node (6), the two neighboring connecting plate of fixation (4) positioning and spacing effect are played to installing prefabricated rectangle steel pipe concrete segment (3) adjacent on pre-buried node (6).
3) prefabricated rectangle steel pipe concrete segment (3) is lifted to into correspondence design attitude with lifting machine, residue is installed in addition Two pieces of connecting plates (4), in the reserved screwhole position of correspondence high-strength bolt (7) and punching bolt (8) are tightened.
4) repeat step 2) and step 3) carry out next node connecting plate (4) install and prefabricated rectangle concrete filled steel tube The installation of sections (3), until all prefabricated rectangle steel pipe concrete segments (3) complete to install.
5) last repeat step 2), the prefabricated rectangle steel pipe concrete segment (3) that prefabricated bent cap (1) is adjacent is installed Node connecting plate (4), tightens the corresponding high-strength bolt of prepared screw-bolt hole (7) and punching bolt (8).
Step 1 in step 1) described in processing prepared screw-bolt hole, corresponding steel pipe sections (11), connecting plate (4) should be pressed After fixing according to the position after installation forming, unified punching, it is ensured that inside and outside prepared screw-bolt hole is perfectly aligned, and be both needed to after punching Polish burr inside and outside prepared screw-bolt hole, it is to avoid occur in installing engineering because burr causes the phenomenon that gets stuck.

Claims (5)

1. bolted quick-assembling prefabricated rectangle concrete pier of steel tube is based on, it is characterised in that:The bridge pier includes prefabricated Concrete-filled rectangular steel tube sections (3), pre-buried node (6), cushion cap (5);Pre-buried node (6) is located at cushion cap (5) and prefabricated rectangle steel Between pipe concrete sections (3);
Between adjacent prefabricated rectangle steel pipe concrete segment (3) and prefabricated rectangle steel pipe concrete segment (3) and pre-buried section Between point (6), the joining place of adjacent steel pipe sections (11) is arranged on connecting plate (4), by high-strength bolt (7) and punching spiral shell Connecting plate (4), steel pipe sections (11) are attached fixation by bolt;
Prefabricated rectangle steel pipe concrete segment (3) is by steel pipe sections (11), concrete (12), prefabricated nut (13), encapsulant (14) constitute with pvc pipe (15), pvc pipe (15) is laid at the reserved punching bolt hole of steel pipe sections (11), at prepared screw-bolt hole The prefabricated nut of spot welding (13), unwelded one end of prefabricated nut (13) is sealed with encapsulant (14), and concrete (12) is poured Build in steel pipe sections (11);Pre-buried node (6) is by steel pipe sections (11), concrete (12), prefabricated nut (13), encapsulant (14) with pvc pipe (15), sole (10), adding rib (9) and crab-bolt (2) composition, sole (10), adding rib (9) and prefabricated Nut (13) is welded with steel pipe sections (11), and crab-bolt (2) is fixed on sole (10), in the reserved punching of steel pipe sections (11) Pvc pipe is laid at bolt duct, concrete (12) is cast in steel pipe sections (11);Connecting plate (4) is by design bolt position cloth Put High-strength bolt hole and punching bolt hole;
Pre-buried node (6) place, in its exposed junction prepared screw-bolt hole and punching duct;Embedment end welding sole (10) and additional Strength rib (9), sole (10) connection crab-bolt (2);The depth of embedded section embedment cushion cap (5) is long not less than concrete-filled rectangular steel tube minor face 1.5 times of degree, exposed junction length is the 1/2 of connecting plate (4) length;Pre-buried node (6) is mainly used in precast assembly pier stud and holds Platform (5) connects, and crab-bolt (2) is for improving the resistance to plucking and shear resistance of pre-buried node (6);The high-strength bolt (7) and punching spiral shell The design number of bolt (8) allows that the ratio of antiskid bearing capacity is determined by Pier Design side bearing capacity and single bolt;Punching spiral shell Bolt (8) and high-strength bolt (7) are staggeredly arranged principle using interlacing, the punching bolt (8) of two adjacent surfaces not in same level position, Prevent punching bolt (8) from intersecting in prefabricated rectangle steel pipe concrete segment (3);Bolt hole and punching spiral shell on connecting plate (4) Keyhole is corresponding with the prepared screw-bolt hole on prefabricated rectangle steel pipe concrete segment (3) and punching bolt hole position.
2. according to claim 1 based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube, its feature It is:Steel pipe inner wall point solid welding at described prefabricated nut (13) and prefabricated rectangle steel pipe concrete segment (3) prepared screw-bolt hole Fixed, unwelded one end carries out pulp-water when sealing prevents casting concrete (12) with encapsulant (14) and overflows and pier stud external water It is internal that vapour enters prefabricated rectangle steel pipe concrete segment (3).
3. according to claim 1 based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube, its feature It is:Described connecting plate (4) and steel pipe sections (11) are closely sturdy ensureing high-strength bolt (7) under lateral forces and wear Core bolt (8) is in artesian condition and tension, it is to avoid in by scissor state.
4. according to claim 1 based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube, its feature It is:The internal diameter of the pvc pipe (15) should 1-2mm bigger than punching bolt (8) diameter, facilitate the installation of punching bolt to be also coagulation The deformation of pvc pipe (15) when soil is poured leaves space.
5. according to claim 1 based on bolted quick-assembling prefabricated rectangle concrete pier of steel tube, its feature It is:The implementation of the bridge pier is as follows, step 1:It is processing prefabricated rectangle steel pipe concrete segment (3), connecting plate (4), pre-buried Node (6), specifically includes following steps:
1) prefabricated rectangle steel pipe concrete segment (3), in factory prefabricated rectangle steel pipe concrete segment (3), sheet material welding are made Rectangular steel pipe, its weld seam preferably adopts groove melt-through weld;Prepared screw-bolt hole, punching bolt hole are processed on steel pipe, will be prefabricated Spot welding after nut (13) aligns with prepared screw-bolt hole axle center is fixed, and nut does not adopt encapsulant with one end of steel pipe inner wall spot welding (14) sealed, reserved punching spiro keyhole position installs pvc pipe (15), by punching bolt (8) is through pvc pipe (15) and tightens Interim fixed, casting concrete (12) vibrates maintenance, and punching bolt (8) can prevent pvc pipe in concreting and maintenance processes (15) movement and the deformation of steel pipe sections (11);
2) connecting plate (4) is made, in factory connecting plate (4) is made, sheet material is selected and cut by thickness, it is corresponding in sheet material The reserved High-strength bolt hole of position processing and punching bolt hole;
3) pre-buried node (6) is made, in factory pre-buried node (6) is made, in prefabricated steel pipe concrete segment bolt is not contained One end welding sole (10) in hole and adding rib (9), sole (10) processing bolt hole connection crab-bolt (2);
4) foundation platform (5) and bent cap (1) are constructed, and pour foundation platform (5) and bent cap (1) at the scene, and by two pre-buried sections Respectively buried foundation cushion cap (5) and bent cap (1) are poured point (6);
Step 2:Prefabricated subsection bridge pier builds place assembly, specifically includes following steps:
1) foundation platform (5) of pre-buried node (6) is installed to design attitude and fixed;In pre-buried node during prefabrication of dismantling (6) temporarily fixed punching bolt (8) and on prefabricated rectangle steel pipe concrete segment (3);
2) prepared screw-bolt hole on connecting plate (4) lower end prepared screw-bolt hole and pre-buried node (6) top is installed for fixing to it Connect the high-strength bolt (7) and punching bolt (8) of connecting plate (4) and pre-buried node (6), the two neighboring connecting plate (4) of fixation is right Prefabricated rectangle steel pipe concrete segment (3) adjacent on pre-buried node (6) is installed and plays positioning and spacing effect;
3) prefabricated rectangle steel pipe concrete segment (3) is lifted to into correspondence design attitude with lifting machine, installs remaining other two pieces Connecting plate (4), in the reserved screwhole position of correspondence high-strength bolt (7) and punching bolt (8) are tightened;
4) repeat step 2) and step 3) carry out next node connecting plate (4) install and prefabricated rectangle steel pipe concrete segment (3) installation, until all prefabricated rectangle steel pipe concrete segments (3) complete to install;
5) last repeat step 2), the node of the prefabricated rectangle steel pipe concrete segment (3) that prefabricated bent cap (1) is adjacent is installed Connecting plate (4), tightens the corresponding high-strength bolt of prepared screw-bolt hole (7) and punching bolt (8);
Step 1 in step 1) described in processing prepared screw-bolt hole, should be by corresponding steel pipe sections (11), connecting plate (4) according to peace After dressing up the fixation of the position after type, unified punching, it is ensured that inside and outside prepared screw-bolt hole is perfectly aligned, and be required to beat after punching Burr inside and outside mill prepared screw-bolt hole, it is to avoid occur in installing engineering because burr causes the phenomenon that gets stuck.
CN201610231802.2A 2016-04-14 2016-04-14 Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier Active CN105735112B (en)

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