CN108316128B - A kind of novel road bridge attachment strap structure and its construction method - Google Patents

A kind of novel road bridge attachment strap structure and its construction method Download PDF

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Publication number
CN108316128B
CN108316128B CN201810016922.XA CN201810016922A CN108316128B CN 108316128 B CN108316128 B CN 108316128B CN 201810016922 A CN201810016922 A CN 201810016922A CN 108316128 B CN108316128 B CN 108316128B
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attachment strap
steel
king
post
strand
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CN108316128A (en
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钟志鹏
靳维
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Shanxi University
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Shanxi University
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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
    • 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

Abstract

The invention belongs to the construction of bridge, mounting technology field, specifically a kind of novel road bridge attachment strap structure and its construction method.Hazard to bridge's pier device is disclosed fundamentally to solve the problems, such as bumping at bridge-head, including king-post, attachment strap, connecting strand and guarded drainage facility;The king-post is arranged in abutment two sides, and it is connected with abutment consolidation, described connecting strand one end is connect by anchoring with king-post, the other end is bolted with attachment strap two sides, described attachment strap one end rides upon on abutment and is connected with beam body, the other end two sides of attachment strap are connect with connecting strand, and the guarded drainage facility is arranged below attachment strap.The adaptability to foundation settlement deformation is improved to realize the absolute altitude adjustability of attachment strap by changing connecting strand and the longitudinally connected position of attachment strap.The invention has whole service life long, highly-safe, the small, height difference of deformation is adaptive adjustable and the advantages of being easy to construct and safeguard.

Description

A kind of novel road bridge attachment strap structure and its construction method
Technical field
The invention belongs to bridge construction, the technical field of assembly, specifically a kind of novel road bridge attachment strap structure and its construction Method.
Background technique
With flourishing for high-grade highway construction, safety during highway is used and service, comfort and quick Property be to evaluation road quality important indicator.However, in southern soft soil areas and Midwest Canal in Loess Area, bumping at bridge-head Phenomenon is a relatively common phenomenon.
Bumping at bridge-head will cause interior driver and passenger's body and jolt discomfort, seriously affected vehicle pass-through safety, Comfort.Simultaneously as the unexpected speedup of vehicle end of the bridge or deceleration, will increase traffic risk and cause traffic accident, in break off a friendship It is logical, threat is brought to people's life security, generates undesirable social influence.Meanwhile the additional dynamic load pair that bumping at bridge-head generates Bridge top, substructure have an adverse effect, according to statistics annual nearly 30% bridge influence due to jumping vehicle and must not be without Maintenance and repairing, thus have brought tremendous economic losses.Moreover, in a sense, the speedup of vehicle and deceleration also increase Extra bus energy consumption and exhaust emissions increase risk of environmental pollution, need enough attention particularly with Urban Bridge.Bumping at bridge-head Producing reason be it is various, in theory, bridge structures using pile foundation or the Extended chemotherapy of basement process, Posterior settlement amount is small, and roadbed is directly filled by the soil body, after platform filler can road operation after be self-possessed and wheel load Under effect, larger sedimentation is generated, the difference of sedimentation forms the height difference between bridge and embankment.And for construction angle, In In abutment back embankment construction, since the duration factor of construction influences, there is no static balance times after roadbed filling is complete, carry out at once Pavement construction;The filler of this between outer land behind leans on the general compacting machinary in close-table wall position in irregular shape because road roller working face is small It is difficult operation, and small-sized ramming machine is used to tamp, standard is not achieved in compactness.After being open to traffic, these factors all will affect joining place The sedimentation of this part banketed, causes the height difference of abutment and embankment.
Problem of bumping at bridge-head, most common treating method in engineering are generated in order to solve the differential settlement of bridge and road It is that attachment strap is set after abutment.Attachment strap is shelved between cantilever beam slab end or abutment and embankment filled soil, with the sedimentation banketed Tail end can sink, and realize the slow transition of step height difference of platform dike joining place mutation, effectively slow down vehicle in end of the bridge Jump vehicle phenomenon.However, there are service lifes not to grow for currently used attachment strap, the problems such as serious end of the bridge is not applicable is settled, mainly Showing attachment strap and abutment joining place, there are seams, and year leads to material to the water proof material of seam crossing setting long afterwards in use Aging, contracting rise and generate crack, and rainy day rainwater is easy to seep under seam crossing, so that the strength and stability of the soil body reduces, cause Soil erosion is generated under attachment strap and is come to nothing, and attachment strap stress is destroyed, and after sedimentation of banketing attachment strap can also generated along road direction Straight skidding.In addition, the attachment strap that Practical Project uses be eventually finite length (3m <L< 12m), attachment strap end subgrade settlement difference In plate junction often occurs on road-so-called " secondary jump vehicle " phenomenon.It can be seen that this engineering circles problem of bumping at bridge-head does not obtain It solves very well, there is an urgent need to invent a kind of hazard to bridge's pier device for overcoming prior art defect fundamentally to solve bumping at bridge-head The problem of.
Summary of the invention
The present invention fundamentally solves bumping at bridge-head to solve the problems, such as hazard to bridge's pier device, provides a kind of Novel road Bridge attachment strap structure and its construction method.
The present invention takes following technical scheme: a kind of novel road bridge attachment strap structure, including king-post, attachment strap, connecting strand and anti- Pumping equipment;The king-post is arranged in abutment two sides, and is connected with abutment consolidation, and described connecting strand one end passes through anchoring and king-post Connection, the other end is fixedly connected with attachment strap two sides, and described attachment strap one end rides upon on abutment and is connected with beam body, attachment strap it is another End two sides are fixedly connected with connecting strand, and the guarded drainage facility is arranged below attachment strap.
The two sides of the attachment strap are edge-on U-steels, and the longitudinal side of U-steel and above and below are equipped with aperture, laterally The pre-buried internal thread steel pipe of position of opening, tapping is equipped with transverse bar above and below the U-steel edge of a wing, and transverse bar forms reinforced steel bar ring, steel It is laid with vertical muscle below muscle ring and forms steel mesh, casting concrete.
The guarded drainage facility includes foundation pit, water storage tank and drainpipe, and foundation pit is arranged below attachment strap, and foundation pit lowest part is set It is equipped with water storage tank, is provided with drainpipe on water storage tank.
The waterproof material that the foundation pit and ponding rooved face use is elastomer modified asphalt waterproof roll, asphalt felt or glass Any one in fine felt or polymer cement waterproof paint or polyurethane felt or cement based penetration crystallization type water proofing paint;Draining Pipe is any one in coating steel pipe or aluminum plastic composite pipe or plastic tube or composite material tube or nodular cast iron pipe.
The connecting strand is that carbon fiber, high tensile steel wire, basalt fibre, PE fiber, aramid fiber, glass fibre are any one Kind material is made, and cord hole is arranged in rope lower end, is bolted by cord hole and the steel pipe hole of attachment strap two sides.
The king-post is H-type or herringbone or A type or only column type is trapezoidal or any one inverted Y-shaped, the material of king-post For armored concrete or steel or one of reinforcing bar-concrete or FRP- concrete.
A kind of construction method of novel road bridge attachment strap structure, includes the following steps,
1) the requirement arrangement that is designed according to king-post in abutment two sides, assembling reinforcement, the pre-buried dragline anchorage in king-post top, installation Tower column formwork, casting concrete;
2) according to bridge location, the length of attachment strap, road width center line determines the position of foundation pit, excavation pit and water storage tank, to base The substrate soil in hole is handled, and is pressed using weight closely knit, waterproof material is laid in foundation pit and ponding rooved face, in water storage tank Drainpipe is arranged in end;
3) prefabricated band hole slot fashioned iron in factory, lower opening wears transverse steel and forms reinforced steel bar ring on U-steel, and longitudinal bottom is worn If vertical muscle, disposed thread pipe, installation template, casting concrete are welded in the lateral hole site of U-steel;
4) after concrete reaches intensity, then attachment strap lifting is placed in corresponding position, by connecting strand one by form removal End is anchored on king-post, and connecting strand band cord hole one end is aligned with U-steel sidewise hole, and it is pre-buried that bolt is passed through cord hole precession Disposed thread pipe, realization connect with attachment strap.
Compared with prior art, the beneficial effects of the present invention are: setting one end of attachment strap when lap slab of bridge is installed in setting In abutment, the other end is connected by drag-line with king-post, by changing cord hole and the link position of attachment strap along longitudinal direction below rope, thus The absolute altitude of adjustment attachment strap ensure that bridge is connect with road surface by attachment strap to adapt to attachment strap caused by settlement of foundation-embankment height difference The smooth transition of position avoids the jump vehicle of abutment.Meanwhile the guarded drainage processing after abutment parados and under attachment strap, make attachment strap- The rainwater that abutment, attachment strap-road surface connecting sewing are penetrated into converges water storage tank, is then exhausted by drainpipe, without washing away attachment strap Lower section water and soil causes the loss of water and soil, solves the problems, such as that service life existing for previous attachment strap is not grown.Therefore, the present invention has Have that whole service life is long, it is highly-safe, deformation is small, height difference is adaptive adjustable and the advantages of being easy to construct and safeguard.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention;
Fig. 2 is U-steel part connection structure diagram;
1- king-post in figure, 2- attachment strap, 3- connecting strand, 4- guarded drainage facility, 5- abutment, 6- steel pipe hole, 7- bolt, 8- beam Body, 9- U-steel, 10- transverse bar, 11- indulge muscle, 41- foundation pit, 42- water storage tank, 43- drainpipe.
Specific embodiment
As shown in Figure 1, 2, a kind of novel road bridge attachment strap structure comprising king-post 1, attachment strap 2, connecting strand 3, guarded drainage facility 4;The king-post is arranged in 5 two sides of abutment, and is connected with abutment consolidation, and described cable wire one end is connect by anchoring with king-post, and one End is connect with the default screw-thread steel pore 6 of attachment strap two sides by bolt 7 by cord hole, and described attachment strap one end rides upon on abutment, And be connected with beam body 8, the other end two sides of attachment strap are connected by screw bolts with cable wire 3 by reserving hole 6, and cable wire upper end passes through anchor Gu being connected with king-post.The guarded drainage facility 4 is arranged below attachment strap.
Further, the two sides of the attachment strap are equipped with edge-on U-steel 9, and U-steel longitudinal side and above and below are all provided with There is aperture, in the pre-buried steel pipe 6 for including screw thread in lateral duct position, tapping is equipped with transverse bar 10 above and below the U-steel edge of a wing, Reinforced steel bar ring is formed, vertical muscle 11 is laid with below reinforced steel bar ring and forms steel mesh, casting concrete.U-steel, steel mesh, concrete are solid Chemical conversion type overlaps compoboard.
Further, the guarded drainage facility is made of foundation pit 41, water storage tank 42, drainpipe 43, the foundation pit and ponding The waterproof material that rooved face uses is elastomer modified asphalt waterproof roll, and asphalt felt, glass fiber felt, polymer cement waterproof apply Expect, polyurethane felt, any one in cement based penetration crystallization type water proofing paint;Drainpipe is coating steel pipe, aluminum plastic composite pipe, Plastic tube, composite material tube, any one in nodular cast iron pipe.
Further, the drag-line is carbon fiber, high tensile steel wire, basalt fibre, PE fiber, aramid fiber, glass fibers It ties up any one material to be made, cord hole is arranged in rope lower end.
Further, the king-post shape is H-type, herringbone, A type, only column type, trapezoidal, any one inverted Y-shaped, material For armored concrete or steel or one of reinforcing bar-concrete or FRP- concrete.
Construction method of the invention are as follows:
1) the requirement arrangement that is designed according to king-post in abutment two sides, assembling reinforcement, the pre-buried dragline anchorage in king-post top, installation Tower column formwork, casting concrete.
2) according to bridge location, the length of attachment strap, road width center line determines the position of foundation pit, excavation pit, water storage tank.To substrate Soil is handled, and is pressed using weight closely knit, is laid with waterproof material in foundation pit and ponding rooved face, is arranged in water storage tank end Drainpipe.
3) prefabricated band hole slot fashioned iron in factory, lower opening wears transverse steel and forms reinforced steel bar ring on U-steel, and longitudinal bottom is worn If vertical muscle, disposed thread pipe, installation template, casting concrete are welded in the lateral hole site of U-steel.
4) after concrete reaches intensity, then attachment strap lifting is placed in corresponding position by form removal.By Suo Yiduan anchor Gu on king-post, and drag-line band cord hole one end is aligned with U-steel sidewise hole, bolt is screwed into disposed thread pipe by cord hole, Realization is connect with attachment strap.
In addition, drag-line, U-steel in construction method of the present invention, bolt surface also needs anti-corrosion, corrosion protection processing.

Claims (2)

1. a kind of novel road bridge attachment strap structure, it is characterised in that: set including king-post (1), attachment strap (2), connecting strand (3) and guarded drainage Apply (4);The king-post (1) is arranged in abutment (5) two sides, and is connected with abutment consolidation, and described connecting strand (3) one end passes through anchoring Connect with king-post, the other end is fixedly connected with attachment strap (2) two sides, described attachment strap (2) one end ride upon on abutment and with beam body (8) It is connected, the other end two sides of attachment strap (2) are fixedly connected with connecting strand (3), and the guarded drainage facility (4) is arranged under attachment strap (2) Side;The two sides of the attachment strap (2) are equipped with edge-on U-steel (9), and the longitudinal side of U-steel (9) and above and below are equipped with out Hole, lateral position of opening are embedded with the steel pipe (6) for including screw thread, and on U-steel (9) edge of a wing, tapping wears transverse bar (10) up and down, Transverse bar (10) forms reinforced steel bar ring, is laid with vertical muscle (11) below reinforced steel bar ring and forms steel mesh, casting concrete;Guarded drainage facility (4) Including foundation pit (41), water storage tank (42) and drainpipe (43), foundation pit (41) setting is below attachment strap (2), foundation pit (41) lowest part It is provided with water storage tank (42), drainpipe (43) is provided on water storage tank (42);Foundation pit (41) and water storage tank (42)
The waterproof material that surface uses is elastomer modified asphalt waterproof roll, asphalt felt or glass fiber felt or polymer cement waterproof Any one in coating or polyurethane felt or cement based penetration crystallization type water proofing paint;Drainpipe (43) is coating steel pipe or aluminium Any one in plastic composite or plastic tube or composite material tube or nodular cast iron pipe;The connecting strand (3) is carbon fiber, height Strong steel wire, basalt fibre, PE fiber, aramid fiber, glass fibre any one material are made, and cord hole is arranged in rope lower end, It is connect with the steel pipe hole (6) of attachment strap two sides by bolt (7) by cord hole;King-post (1) is H-type or herringbone or A type or only column Type is trapezoidal or any one inverted Y-shaped, the material of king-post (1) are that armored concrete or steel or reinforcing bar-concrete or FRP- are mixed One of solidifying soil.
2. a kind of construction method of novel road bridge attachment strap structure as described in claim 1, it is characterised in that: including following step Suddenly,
1) the requirement arrangement that is designed according to king-post in abutment two sides, assembling reinforcement, the pre-buried dragline anchorage in king-post top install king-post Template, casting concrete;
2) according to bridge location, the length of attachment strap, road width center line determines the position of foundation pit, excavation pit and water storage tank, to foundation pit Substrate soil is handled, and is pressed using weight closely knit, waterproof material is laid in foundation pit and ponding rooved face, in water storage tank end Drainpipe is set;
3) prefabricated band hole slot fashioned iron in factory, lower opening wears transverse steel and forms reinforced steel bar ring on U-steel, and longitudinal bottom wears vertical Muscle welds disposed thread pipe, installation template, casting concrete in the lateral hole site of U-steel;
4) after concrete reaches intensity, then attachment strap lifting is placed in corresponding position, by connecting strand one end anchor by form removal Gu on king-post, and connecting strand band cord hole one end is aligned with U-steel sidewise hole, bolt is screwed into disposed thread by cord hole Pipe, realization are connect with attachment strap.
CN201810016922.XA 2018-01-09 2018-01-09 A kind of novel road bridge attachment strap structure and its construction method Active CN108316128B (en)

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CN111236043A (en) * 2020-01-10 2020-06-05 山西大学 Novel road bridge attachment strap connection structure of self-adaptation height

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JPH0945162A (en) * 1995-07-27 1997-02-14 Showa Electric Wire & Cable Co Ltd Sz wire shield device
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DE202008016445U1 (en) * 2008-12-15 2009-02-26 Abs Safety Gmbh Lifting point for personal security
CN104213499A (en) * 2013-06-05 2014-12-17 陈从春 Novel bridge structure without expansion joints
CN103741595B (en) * 2014-01-21 2016-01-20 浙江省交通规划设计研究院 A kind of bridgehead structures for administering bumping at bridge-head
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