CN112709128A - Bridge expansion joint structure resisting excessive deformation and construction method thereof - Google Patents
Bridge expansion joint structure resisting excessive deformation and construction method thereof Download PDFInfo
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- CN112709128A CN112709128A CN202011551467.7A CN202011551467A CN112709128A CN 112709128 A CN112709128 A CN 112709128A CN 202011551467 A CN202011551467 A CN 202011551467A CN 112709128 A CN112709128 A CN 112709128A
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/062—Joints having intermediate beams
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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
The invention provides a bridge expansion joint structure for resisting excessive deformation and a construction method thereof, and relates to the technical field of bridge construction. The penetrating shaft penetrates through the left side beam, the right side beam and the bearing beam, limiting rings are adjustably connected to two ends of the penetrating shaft, a guide sleeve for the penetrating shaft to penetrate through is fixed on the bearing beam, and springs are connected between the guide sleeve and the left side beam as well as between the guide sleeve and the right side beam. The bottoms of the left side beam and the right side beam are pre-pressed on the buffer mechanism through the rollers, and the buffer mechanism is fixed on the base. The problem of the bridge expansion joint among the prior art resist the deformability poor and flexible scope little is solved.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge expansion joint structure capable of resisting excessive deformation and a construction method thereof.
Background
The expansion joint is arranged for avoiding the structural member from generating cracks due to the fact that the building expands with heat and contracts with cold greatly when the building is long, the building is divided into a plurality of independent parts through the expansion joint, and the independent parts can be freely changed. When the expansion joint is arranged, usually, gaps are reserved in the vertical direction at certain intervals or at positions with large structural change along the length direction of a building, building components above a foundation are completely disconnected and are divided into independent parts capable of freely expanding and contracting in the horizontal direction, and the foundation part of the building is less influenced by temperature change and generally does not need to be disconnected.
Along with the rapid development of bridge construction, continuous structures with large span are more and more, the expansion and contraction activity of bridges also has a larger range, and a common expansion joint structure with the expansion and contraction activity of 100-300 millimeters is a steel plate comb-shaped expansion joint, but the processing of comb teeth of the steel plate comb-shaped expansion joint is complex, the steel consumption is large, the deformation limiting capacity of the expansion joint is poor, and the expansion and contraction activity range is smaller.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bridge expansion joint structure for resisting overlarge deformation and a construction method thereof, and solves the problems that the bridge expansion joint in the prior art is poor in deformation resistance and small in expansion range.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a bridge expansion joint structure of resisting too big deformation, it includes the anchor in the base of bottom, and the top bilateral symmetry anchor of base has left boundary beam and right roof beam, and parallel arrangement has the bearing joist who is fixed in on the base between left boundary beam and the right roof beam, and the interval at left boundary beam and right roof beam and bearing joist top is all sealed through the elastic waterproof piece. The penetrating shaft penetrates through the left side beam, the right side beam and the bearing beam, limiting rings are adjustably connected to two ends of the penetrating shaft, a guide sleeve for the penetrating shaft to penetrate through is fixed on the bearing beam, and springs are connected between the guide sleeve and the left side beam as well as between the guide sleeve and the right side beam. The bottoms of the left side beam and the right side beam are pre-pressed on the buffer mechanism through the rollers, and the buffer mechanism is fixed on the base.
The construction method of the bridge expansion joint structure resisting excessive deformation comprises the following steps:
s1, calculating the total elongation and the total reduction of the bridge according to the engineering parameters to obtain the deformation range of the bridge, and performing slot cutting and slotting construction on the bridge above the foundation according to the deformation range of the bridge to form an expansion joint structure mounting slot;
s2, bonding the cushion pad on the base, covering the pressing plate on the cushion pad in a centering manner, assembling the prepressing assembly, and controlling the pretightening force of the prepressing assembly by using a torque wrench to enable the deformation of the cushion pad to resist the impact load transmitted by the side beam;
s3, hoisting the base provided with the buffer mechanism to the bottom of the mounting groove, anchoring the base and pouring concrete to fix the base on the bridge;
s4, hanging the bearing beam on the pressure plate, adjusting the position of the bearing beam to ensure that the offset between the center line position of the bearing beam and the center line of the cushion pad is not more than 5 mm, and welding and fixing the bearing beam on the pressure plate;
s5, hoisting the left side beam and the right side beam above the base, applying vertical downward pressure to the left side beam and the right side beam to enable the rollers to extrude the pressing plate, loosening the pre-pressing assembly and enabling the cushion pad to have no resilience, fixing the positions of the left side beam and the right side beam in the vertical direction by using a tool, and then pushing the left side beam and the right side beam to move relatively along the horizontal direction to enable the distance between the left side beam and the right side beam to meet the requirement of the width of the expansion joint and pass through the tool to fix the positions;
s6, drilling holes on the left side beam and the right side beam, installing penetrating shafts and springs, screwing down limiting rings at two ends, pouring concrete on the positions of the left side beam and the right side beam below the limiting rings, dismantling the tool after the concrete is dried, unscrewing the limiting rings to enable the distance between the limiting rings at the two ends to be equal to the deformation range of the bridge, installing a protective cylinder, continuously pouring the concrete to fill the gap between the side beams and the bridge, and maintaining until the concrete is dried;
and S7, installing an elastic waterproof piece and a cover plate, and enabling the height difference between the top surface of the cover plate and the top surface of the bridge to be not more than 2 mm.
The invention has the beneficial effects that:
1. install the expansion joint structure in this scheme in the expansion joint department of bridge, the impact load of the level that makes the bridge receive and vertical direction can transmit for through the boundary beam and wear mandrel and base, wear the spring that sets up on the mandrel and buffer gear on the base can subdue impact load, power after subduing passes through the base and transmits to the bridge and the basis on expansion joint both sides, at last by bridge and the complete absorption of anchor system in the basis, thereby the reliability at expansion joint has been improved, through ingenious ground layout elastic component, realize with the soft and firm, reduce the destructive action of impact load to the bridge, the bridge has been avoided producing too big deformation effectively. Meanwhile, the limiting ring and the guide sleeve on the penetrating shaft, the bearing beam and the boundary beams on two sides of the bearing beam can be limited in movement, and the bridge is further prevented from being deformed too much.
2. Can increase this expansion joint structure and bridge foundation's joint strength and support the structure on upper portion through the base to can absorb the vertical load that expansion joint department received through buffer gear on base and the base, the influence of vertical load is avoided in the deformation of the bridge that makes the expansion joint both ends, the deformation that makes the bridge in expansion joint department is along the ascending flexible of horizontal direction all the time, thereby improve the actual deformation of expansion joint department and the matching degree that appears in the design, the destruction such as bridge crackle that can arouse because of the circumstances such as overload in the in-service use process has been avoided.
3. The left side roof beam and the right side roof beam are connected with the buffer gear in a contact manner through the mode of roller extrusion, the extrusion makes the combination of the roof beam and the base more reliable, the impact load is guaranteed to be transmitted to the buffer gear and absorbed, and meanwhile, the rollers can reduce the moving resistance, so that the bridge moves more smoothly in the telescopic deformation process.
4. The bearing beam can support the expansion joint, so that the expansion joint structure in the scheme can be applied to the expansion joint with larger expansion movement, the road surface of the bridge is smoother, and a driving condition without sound and vibration can be obtained when a vehicle drives to the expansion joint; and the distribution of the displacement is more reasonable and uniform, and the generation of overlarge additional stress is avoided.
5. The elastic waterproof piece can prevent water, chloride, sulfide, acid rain and the like from entering the expansion joint so as to protect the expansion joint structure from being damaged by corrosion and the like.
Drawings
Figure 1 is a schematic view of a bridge expansion joint structure which resists excessive deformation.
Wherein, 1, a base; 2. a left side beam; 3. a right side beam; 4. a support beam; 5. an elastic waterproof member; 51. hanging a table; 6. penetrating a mandrel; 61. a limiting ring; 62. a guide sleeve; 63. a spring; 7. a roller; 8. a buffer mechanism; 81. a cushion pad; 82. pressing a plate; 83. a pre-pressing component; 9. a cover plate; 10. a protective cylinder; 101. an accommodating chamber; 11. surrounding edges; 12. and (4) an anchoring piece.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, the bridge expansion joint structure resisting excessive deformation comprises a base 1 anchored at the bottom, a left side beam 2 and a right side beam 3 are symmetrically anchored at two sides above the base 1, a supporting beam 4 fixed on the base 1 is arranged between the left side beam 2 and the right side beam 3 in parallel, and the intervals between the top of the supporting beam 4 and the top of the left side beam 2 and the top of the right side beam 3 are sealed by an elastic waterproof piece 5. The bearing beam 4 is formed by processing I-shaped steel, and is fixed with the base 1 as a whole, the bottom surface of the base 1 is anchored and poured as a whole with the bridge foundation, the side surface of the base 1 is anchored and poured as a whole with the bridge on both sides of the expansion joint, so that the bearing beam 4 has enough strength to support the load of the vehicle crossing the expansion joint, the expansion amount of the expansion joint can be divided into two by one bearing beam 4, the expansion amount of the expansion joint can be divided into three by two bearing beams 4, and the expansion joint structure can be applied to the bridge with large expansion amount.
The penetrating shaft 6 penetrates through the left side beam 2, the right side beam 3 and the bearing beam 4, limiting rings 61 are adjustably connected to two ends of the penetrating shaft, a guide sleeve 62 for the penetrating shaft 6 to penetrate through is fixed on the bearing beam 4, and springs 63 are connected between the guide sleeve 62 and the left side beam 2 and the right side beam 3. Two ends of the penetrating shaft 6 extend into the protection cylinders 10, the two protection cylinders 10 are symmetrically connected to the left side beam 2 and the right side beam 3, and the protection cylinders 10 are internally provided with accommodating cavities 101 for the left and right movement of the end parts of the penetrating shaft 6.
The bottoms of the left side beam 2 and the right side beam 3 are pre-pressed on a buffer mechanism 8 through rollers 7, and the buffer mechanism 8 is fixed on the base 1.
A plurality of bearing beams 4 are arranged between the left side beam 2 and the right side beam 3 at intervals, the interval between the left side beam 2 or the right side beam 3 and the adjacent bearing beam 4 is not more than 40 mm, and the interval between the adjacent bearing beams 4 is not more than 40 mm.
The top of the left side beam 2, the top of the right side beam 3 and the top of the bearing beam 4 are respectively detachably connected with a cover plate 9, and the elastic waterproof part 5 is extruded and fixed by the cover plate 9.
Hanging platforms 51 are fixed at two ends of the elastic waterproof piece 5, the hanging platforms 51 are embedded into clamping grooves in the tops of the left side beam 2, the right side beam 3 or the bearing beam 4, bosses embedded into the clamping grooves are arranged on the cover plate 9, the cover plate 9 covers the hanging platforms 51 and is locked and fixed with the left side beam 2, the right side beam 3 or the bearing beam 4 through fastening screws, the fastening screws are hexagon socket head cap screws, and the top surface is lower than that of the cover plate 9 after the fastening screws are fastened.
The elastic waterproof member 5 is made of neoprene, and the main body is in a V shape with an opening angle of 115-145 degrees. Hang platform 51 for integrated into one piece and main part both ends and downwardly extending's lower boss, have the profile of tooth structure on the bottom surface of lower boss to the thickness of lower boss slightly is greater than the height of draw-in groove, makes apron 9 can extrude and hang platform 51 after connecting, and the profile of tooth structure receives to extrude to seal its contact surface with the draw-in groove, is favorable to the stagnant water. An upward extending upper boss is integrally formed in the middle of the V-shaped main body, and the upper boss can generate an upward jacking force when the elastic waterproof piece 5 is subjected to compression deformation, so that sundries and garbage falling on the elastic waterproof piece 5 can be cleaned. After the fastening screw is unscrewed, the elastic waterproof piece 5 can be replaced by lifting the cover plate 9, and the maintenance is convenient.
A surrounding edge 11 is fixed along the edge of the base 1, the buffer mechanism 8 is arranged in the surrounding edge 11, and an anchoring piece 12 is arranged along the outer side of the surrounding edge 11 and the bottom surface of the base 1.
The buffer mechanism 8 includes a buffer pad 81 fixed on the base 1, a pressing plate 82 covering the buffer pad 81, and an edge of the pressing plate 82 is connected to the base 1 through a pre-pressing assembly 83. The pre-pressing component 83 comprises a threaded counter bore, a screw rod and a pre-tightening nut which are machined on the base 1, the lower end of the screw rod is connected with the threaded counter bore, and the upper end of the screw rod penetrates through the pressing plate 82 and then is connected with the pre-tightening nut.
The roller 7 abuts against the top surface of the pressing plate 82, and the roller 7 is located between the pre-pressing assembly 83 and the support beam 4.
The construction method of the bridge expansion joint structure resisting excessive deformation comprises the following steps:
and S1, calculating the total elongation and the total reduction of the bridge according to the engineering parameters to obtain the deformation range of the bridge, and performing slot cutting and slotting construction on the bridge above the foundation according to the deformation range of the bridge to form an expansion joint structure mounting groove.
In the calculation process of the expansion joint of the bridge, the expansion amount delta L of the beam body caused by the temperature changetAnd the shrinkage (Delta L) of the beam body caused by the shrinkage and creep of the concreteS+ΔLC) Is the most important calculation quantity.
Beam elongation due to temperature rise:
beam shortening due to temperature drop:
ΔLt＝ΔLt ++ΔLt -
wherein, TmaxAnd TminRespectively, the highest and lowest temperatures of the area in which the project is located; t isset,lAnd Tset,uRespectively representing a lower limit value and an upper limit value of a preset installation temperature range; l represents the length of the beam body of the calculated expansion amount, and depends on the length segmentation of the beam body and the arrangement condition of the support;
the linear expansion coefficient of the beam concrete material is shown.
For prestressed concrete bridges, the amount of beam shortening caused by concrete creep can be expressed as:
ΔLS＝Δt×γ×L×β
wherein, Δ LSΔ L is the amount of shrinkage of the beam due to drying shrinkageCEe is the modulus of elasticity of the concrete, δ ρ is the average axial stress due to the pre-stress,
the creep coefficient of concrete (generally 2.0), beta is the decreasing coefficient of creep and drying shrinkage, and L is the length of the beam body.
For the reinforced concrete bridge, the beam body shortening caused by concrete shrinkage is as follows:
ΔLS＝εcs(tu,to)l
wherein ε cs (t)u,to) Showing the age t of the concrete of the beam body when the installation of the expansion joint structure is completedoConcrete age t to the end of shrinkageuThe shrinkage strain of the concrete therebetween.
The finally obtained deformation range delta L of the bridge is more than or equal to (delta L)S+ΔLC)+ΔLt
S2, paving and bonding the cushion pad 81 on the base 1, wherein the cushion pad 81 is made of rubber or a teflon plate, centering the pressing plate 82 on the cushion pad 81, assembling the pre-pressing component 83, and controlling the pre-pressing force of the pre-pressing component 83 by using a torque wrench to enable the deformation of the cushion pad 81 to resist the impact load transmitted by the side beam.
And S3, hoisting the base 1 provided with the buffer mechanism 8 to the bottom of the installation groove, anchoring the base 1 and pouring concrete to be fixed on the bridge, specifically, anchoring the anchoring piece 12 on the bottom surface of the base 1 on the bridge foundation, anchoring the anchoring piece 12 on the surrounding edge 11 of the base 1 on the bridge beam bodies on two sides of the expansion joint, pouring and fixing the anchoring piece through cast-in-place concrete, and performing subsequent processing after the anchoring piece is cured.
S4, the supporting beam 4 is hung on the pressing plate 82, the position of the supporting beam 4 is adjusted to enable the offset between the center line position of the supporting beam 4 and the center line of the cushion pad 81 not to be larger than 5 mm, and the load transmitted by the supporting beam 4 can act on the cushion pad 81 more uniformly.
The joist 4 is welded to the pressure plate 82. After the position of the supporting beam 4 is adjusted, the position of the supporting beam 4 is fixed by spot welding, and then the supporting beam is reinforced by full welding.
S5, hoisting the left side beam 2 and the right side beam 3 to the upper side of the base 1, applying vertical downward pressure to the left side beam 2 and the right side beam 3 to enable the roller 7 to extrude the pressing plate 82, wherein the extrusion force needs to ensure that the cushion pad 81 does not rebound after the prepressing assembly 83 is loosened, namely the cushion pad is the same as the pretightening force of the prepressing assembly 83. After the boundary beam is anchored and poured, the acting force of the bridge is not less than the pretightening force, so that the full contact between the roller 7 and the pressing plate 82 and the buffering capacity of the buffering cushion 81 are ensured.
The left side beam 2 and the right side beam 3 are fixed by the tool at the positions in the vertical direction, and then the left side beam 2 and the right side beam 3 are pushed to move relatively along the horizontal direction, so that the distance between the left side beam 2 and the right side beam 3 meets the requirement of the width of an expansion joint and is fixed by the tool.
S6, drilling holes on the left side beam 2 and the right side beam 3, installing the penetrating shaft 6 and the spring 63, screwing the limiting rings 61 at the two ends, pouring concrete at the positions of the left side beam 2 and the right side beam 3 below the limiting rings 61, dismantling the tool after the concrete is dried, unscrewing the limiting rings 61 to enable the distance between the limiting rings 61 at the two ends to be equal to the deformation range of the bridge, installing the protection cylinder 10, continuously pouring the concrete, filling the gap between the side beams and the bridge, and maintaining until the concrete is dried.
S7, installing the elastic waterproof part 5 and the cover plate 9, enabling the height difference between the top surface of the cover plate 9 and the top surface of the bridge to be not more than 2 mm, and checking by using tools such as a feeler gauge and a ruler in the installation stage to avoid the problem of vehicle jumping caused by the height difference between the road surface and the cover plate 9.
The concrete pouring involved in the method needs to be carried out between concretes, the plastic cloth is used for protecting the parts which do not need to be poured, after the concretes are poured, the vibrating rod needs to be used for vibrating until no bubble appears in the concrete, and after the vibrated concrete is compacted, the constructor can use the trowel to extrude out excessive cement grout.
Claims (9)
1. The bridge expansion joint structure capable of resisting excessive deformation is characterized by comprising a base (1) anchored at the bottom, wherein a left side beam (2) and a right side beam (3) are symmetrically anchored on two sides above the base (1), a bearing beam (4) fixed on the base (1) is arranged between the left side beam (2) and the right side beam (3) in parallel, and the intervals between the left side beam (2) and the right side beam (3) and the top of the bearing beam (4) are sealed through an elastic waterproof piece (5);
the penetrating shaft (6) penetrates through the left side beam (2), the right side beam (3) and the bearing beam (4) and is adjustably connected with limiting rings (61) at two ends, a guide sleeve (62) for the penetrating shaft (6) to penetrate through is fixed on the bearing beam (4), and springs (63) are connected between the guide sleeve (62) and the left side beam (2) and between the guide sleeve (62) and the right side beam (3);
the bottom of the left side beam (2) and the bottom of the right side beam (3) are pre-pressed on a buffer mechanism (8) through rollers (7), and the buffer mechanism (8) is fixed on the base (1).
2. The bridge expansion joint structure resisting excessive deformation according to claim 1, wherein a plurality of the bearing beams (4) are arranged between the left side beam (2) and the right side beam (3) at intervals, the interval between the left side beam (2) or the right side beam (3) and the adjacent bearing beams (4) is not more than 40 mm, and the interval between the adjacent bearing beams (4) is not more than 40 mm.
3. The bridge expansion joint structure resisting excessive deformation according to claim 1, wherein a cover plate (9) is detachably connected to the tops of the left side beam (2), the right side beam (3) and the bearing beam (4) respectively, and the elastic waterproof member (5) is fixed by the cover plate (9) in a pressing mode.
4. The bridge expansion joint structure capable of resisting excessive deformation according to claim 3, wherein hanging platforms (51) are fixed at two ends of the elastic waterproof member (5), the hanging platforms (51) are embedded into clamping grooves in the tops of the left side beam (2), the right side beam (3) or the bearing beam (4), bosses embedded into the clamping grooves are arranged on the cover plate (9), and the cover plate (9) covers the hanging platforms (51) and is locked and fixed with the left side beam (2), the right side beam (3) or the bearing beam (4) through fastening screws.
5. The bridge expansion joint structure resisting excessive deformation according to claim 1, wherein two ends of the penetrating shaft (6) extend into protective cylinders (10), the two protective cylinders (10) are symmetrically connected to the left side beam (2) and the right side beam (3), and accommodating cavities (101) for the left and right movement of the end part of the penetrating shaft (6) are arranged in the protective cylinders (10).
6. Bridge expansion joint structure against excessive deformations according to claim 1, characterized in that along the edge of the base (1) is fixed a surrounding edge (11), the damping means (8) are arranged inside the surrounding edge (11), along the outside of the surrounding edge (11) and the bottom surface of the base (1) are arranged anchors (12).
7. The bridge expansion joint structure resisting excessive deformation according to claim 1, wherein the buffer mechanism (8) comprises a buffer pad (81) fixed on the base (1), the buffer pad (81) is covered with a pressing plate (82), and the edge of the pressing plate (82) is connected to the base (1) through a pre-pressing assembly (83).
8. The bridge expansion joint structure resisting excessive deformation according to claim 7, wherein the rollers (7) abut against the top surface of the pressing plate (82), and the rollers (7) are located between the pre-pressing assembly (83) and the bearing beam (4).
9. A method of constructing a bridge expansion joint structure which resists excessive deformation according to any one of claims 1 to 8, comprising:
s1, calculating the total elongation and the total reduction of the bridge according to the engineering parameters to obtain the deformation range of the bridge, and performing slot cutting and slotting construction on the bridge above the foundation according to the deformation range of the bridge to form an expansion joint structure mounting slot;
s2, adhering the cushion pad (81) on the base (1), centering the press plate (82) on the cushion pad (81), assembling the pre-pressing component (83), and controlling the pre-pressing force of the pre-pressing component (83) by using a torque wrench to enable the deformation of the cushion pad (81) to resist the impact load transmitted by the side beam;
s3, hoisting the base (1) provided with the buffer mechanism (8) to the bottom of the mounting groove, anchoring the base (1), and pouring concrete to fix the base on the bridge;
s4, hanging the bearing beam (4) on the pressure plate (82), adjusting the position of the bearing beam (4) to ensure that the offset between the center line position of the bearing beam (4) and the center line of the cushion pad (81) is not more than 5 mm, and welding and fixing the bearing beam (4) on the pressure plate (82);
s5, hoisting the left side beam (2) and the right side beam (3) to the position above the base (1), applying vertical downward pressure to the left side beam (2) and the right side beam (3) to enable the roller (7) to extrude the pressing plate (82) and enable the cushion pad (81) to have no rebound after the prepressing assembly (83) is loosened, fixing the positions of the left side beam (2) and the right side beam (3) in the vertical direction by using a tool, and then pushing the left side beam (2) and the right side beam (3) to relatively move along the horizontal direction to enable the distance between the left side beam (2) and the right side beam (3) to meet the requirement of the width of the expansion joint and fixing the position by the tool;
s6, drilling holes on the left beam (2) and the right beam (3), installing a penetrating shaft (6) and a spring (63), screwing down the limiting rings (61) at the two ends, pouring concrete on the left beam (2) and the right beam (3) below the limiting rings (61), dismantling the tool after the concrete is dried, unscrewing the limiting rings (61) to enable the distance between the limiting rings (61) at the two ends to be equal to the deformation range of the bridge, installing a protection cylinder (10), continuously pouring the concrete, filling the gap between the side beam and the bridge, and maintaining until the concrete is dried;
and S7, installing the elastic waterproof piece (5) and the cover plate (9) to ensure that the height difference between the top surface of the cover plate (9) and the top surface of the bridge is not more than 2 mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605454A (en) * | 2021-07-15 | 2021-11-05 | 中国二十冶集团有限公司 | Construction method for enhancing deformation resistance of expansion joint and expansion joint deformation-resistant structure |
| CN113668374A (en) * | 2021-09-14 | 2021-11-19 | 河南明辉建设集团有限公司 | Anchor subassembly in bridge expansion joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605454A (en) * | 2021-07-15 | 2021-11-05 | 中国二十冶集团有限公司 | Construction method for enhancing deformation resistance of expansion joint and expansion joint deformation-resistant structure |
| CN113668374A (en) * | 2021-09-14 | 2021-11-19 | 河南明辉建设集团有限公司 | Anchor subassembly in bridge expansion joint |
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| CN112709128B (en) | 2023-04-21 |
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