CN102912720B - A kind of frame bridge attractive joint structure - Google Patents

Abstract

The invention discloses a kind of frame bridge attractive joint structure, be a kind of be arranged in frame bridge improve long box-body jacking frame concrete stress crack and framework joint seam crossing infiltration phenomenon attractive joint structure, belong to Construction Technology of With standing Operation field.It comprises the attractive joint be arranged in frame bridge, joint filling board (7) is provided with in described attractive joint, framework dual-side at described attractive joint place is interval with some steel arranged along lengths of frame direction within the walls and cuts off (5) along frame height direction, described steel cuts off (5) through described joint filling board (7), outside the top board of the framework at described attractive joint place, outside the abutment wall of both sides and the inner side of framework be respectively equipped with waterproofing course.Structure of the present invention is simple, effectively can improve frame construction because of affecting the more cracky phenomenon of appearance by concrete stress, greatly reduces the accumulative jacking deviation of multi-section frame gradation jacking generation, improves workmanship, and can reduction of erection time greatly, reduction construction cost.

Description

A frame bridge induced joint structure

technical field

The invention relates to an induced joint structure of a frame bridge, in particular to an induced joint structure arranged in a frame bridge to improve the concrete stress cracks in the jacking frame of a long box body and water seepage at the joint joints of the frame, and belongs to the technical field of jacking construction.

Background technique

During frame jacking construction, if the length of the jacking frame is relatively long, it is usually prefabricated in multiple sections and then jacked by the intermediate method, which requires a longer construction period, and the cumulative deviation of jacking will increase after the number of jackings increases; Or use the prefabrication of the entire length of the frame, although the construction period can be shortened in this way, but there will be more cracks in the frame structure due to the influence of concrete stress, and the quality cannot be guaranteed. In the past, settlement joints were set every 5-10m on the frame. Although this can improve structural cracks, the water-stop effect at the joints of the frame joints is not good, and the problem of water leakage cannot be completely solved. Water seepage will occur after a long time.

Contents of the invention

Aiming at the above-mentioned defects existing in the prior art, the present invention provides an induced joint structure of a frame bridge, which can effectively solve the problem of long construction period for multi-stage prefabrication of the frame, increased accumulative deviation of jacking caused by multiple jackings, and problems caused by concrete stress. There are many cracks and poor sealing effect of frame joints.

The present invention is achieved through the following technical solutions: a frame bridge induced joint structure, which includes an induced joint arranged in the frame bridge, a caulking plate is provided in the induced joint, and the two sides of the frame at the induced joint are A number of steel shear pins arranged along the length direction of the frame are arranged at intervals in the side wall along the height direction of the frame. The outer side of the wall and the inner side of the frame are respectively provided with waterproof layers.

In the present invention, the steel shear pins arranged in the joints can ensure the stability of the induced joint structure during the jacking of the frame, and can control the vertical shear deformation of the frame bridge, and the design of the waterproof layer can effectively ensure that the induced joints do not leak. The frame bridge can effectively prevent cracks caused by the influence of concrete stress by setting the above-mentioned induced joint structure.

In order to improve the water-stop effect at the induced joint, a steel edge waterstop strip forming a closed loop along the induced joint is buried outside the frame steel bar at the induced joint, and a water stop along the induced joint is embedded in the frame concrete at the induced joint. A rubber waterstop that forms a closed loop at the seam.

A further solution is that the steel edge waterstop is a GSE5 steel edge waterstop, and the rubber waterstop is a GRE7 rubber waterstop.

In order to improve the waterproof effect, the waterproof layer includes a polyurethane waterproof coating layer and a chlorinated polyethylene waterproof membrane layer arranged sequentially from the inside to the outside on the outside of the top plate of the frame and the outside of the side walls on both sides, and the inside of the frame. M1500 waterproofing agent layer.

The steel shear pin is composed of an iron sleeve with an inner diameter of 30 mm and a round steel with a diameter of φ28 mm. The round steel is inserted in the iron sleeve, and the iron sleeve is filled with asphalt ointment.

The caulking board is a hard sawdust board fixedly arranged in the middle of the induced seam.

The setting interval of the steel shear pins is 20cm.

The beneficial effects of the present invention are: the present invention is simple in structure and easy to operate, and it is arranged in the frame, which effectively improves the phenomenon of many cracks in the frame structure due to the influence of concrete stress, and greatly reduces the occurrence of multi-section frame jacking in stages. The accumulative jacking deviation improves the quality of the project, and can greatly shorten the construction period and reduce the construction cost.

Description of drawings

Fig. 1 is the structural representation among the embodiment 1 of the present invention;

Fig. 2 is A-A schematic diagram in Fig. 1;

Fig. 3 is an enlarged schematic diagram of part C in Fig. 1;

Fig. 4 is a schematic structural diagram in Embodiment 2 of the present invention;

Fig. 5 is a D-D schematic diagram in Fig. 4;

Fig. 6 is an enlarged schematic diagram of part B in Fig. 4;

In the figure: 1. Chlorinated polyethylene waterproof coiled material layer, 2. Polyurethane waterproof coating layer, 3. Steel edge waterstop, 4. Rubber waterstop, 5. Steel shear pin, 6. Waterproof agent layer, 7. caulking board, 8, iron casing, 9, asphalt ointment, 10, round steel, 11, frame body.

Detailed ways

Below in conjunction with accompanying drawing, the present invention will be further described:

Example 1

As shown in accompanying drawings 1-3, a frame bridge induced joint structure, the induced joint is arranged in the frame, the joint is provided with a caulking plate 7 inside the induced joint, and the inner edges of the side walls on both sides of the frame at the induced joint are There are several steel shear pins 5 arranged along the length direction of the frame at intervals in the height direction of the frame. The steel shear pins 5 are composed of an iron sleeve 8 with an inner diameter of 30 mm and a round steel 10 with a diameter of φ28 mm. The round steel 10 passes through the caulking plate 7 Inserted in the iron sleeve 8, the other end of the iron sleeve 8 is a closed end, which is filled with asphalt ointment 9, and the non-closed end of the iron sleeve 8 is flush with the surface of the caulking plate 7. The induced seam is also embedded with a steel edge waterstop 3 forming a closed loop along the induced joint on the outside of the frame reinforcement, and a rubber waterstop forming a closed loop along the induced joint is embedded in the frame concrete at the induced joint 4. The steel edge waterstop 3 in this embodiment is a GSE5 steel edge waterstop, and the rubber waterstop 4 is a GRE7 rubber waterstop. A polyurethane waterproof coating layer 2 and a chlorinated polyethylene waterproof coiled material layer 1 are sequentially arranged on the outside of the top plate of the frame and the outside of the side walls on both sides from inside to outside, and an M1500 waterproofing agent layer 6 is painted on the inside of the frame.

In this embodiment, the distance between the steel shear pins 5 is 20 cm, the caulking board 7 is a hard sawdust board, and the thickness of the caulking board 7 is 2 cm.

The induction joint structure of this embodiment is suitable for frames without settlement joints, and is mainly used for setting in jacking frames.

During the prefabrication process of the frame, when tying the steel bars of the frame bottom plate, the GSE5 steel edge waterstop 3, the GRE7 rubber waterstop 4 and the caulking plate 7 are buried, the bottom slab concrete is poured, and then the frame side walls and roof steel bars are bound in sequence First bury the GRE7 rubber waterstop 4, install the caulking plate 7, both of which are fixed with threaded steel bars, then bury the iron sleeve 8 and round steel 10 to form the steel shear pin 5, and the steel shear pin 5 passes through the caulking plate 7. After the frame side wall and roof steel bars are bound, weld and fix the GSE5 steel edge waterstop 3 on the frame steel bar net, pour concrete, and finally paint two layers on the frame side wall and roof outer concrete surface after the frame concrete curing period is over Polyurethane waterproof coating, then lay chlorinated polyethylene waterproof membrane, and paint M1500 waterproofing agent on the concrete surface at the induced joint in the frame.

GSE5 steel edge waterstop and GRE7 rubber waterstop are set around the frame, fixed horizontally and vertically with steel bars, so that they will not be displaced or deformed during concrete pouring and affect the waterstop effect; steel shear pins are set on the frame The side walls on both sides are spot-welded and fixed on the frame reinforcement; before use, the caulking board is sawed into two boards according to the required size, and holes are made at the positions of the steel shear pins for assembly. It needs to be fixed on the frame reinforcement with reinforcement. , to ensure that it does not shift when pouring concrete.

The present invention improves the cracks generated under the influence of concrete stress inside the structure by setting "seams", and ensures the stability of the induced joint structure of the frame during jacking by setting waterstops and steel shear pins in the "seams", and can also ensure the stability of the structure in the frame. Watertight joints.

Other parts in this embodiment adopt the prior art, and will not be repeated here.

Example 2

As shown in accompanying drawings 4-6, this embodiment is basically the same as Embodiment 1, the difference is that no steel edge waterstop and rubber waterstop are provided in this embodiment. It includes induction joints arranged in the frame bridge, and caulking plates 7 are arranged in the induction joints. In the side walls on both sides of the frame at the induction joint, several steel shear pins 5 arranged along the length direction of the frame are arranged at intervals along the height direction of the frame. The round steel 10 is composed of round steel 10, which passes through the caulking plate 7 and is inserted into the iron sleeve 8. The other end of the iron sleeve 8 is a closed end, which is filled with asphalt ointment 9, and the non-closed end of the iron sleeve 8 The end is flush with the surface of caulking plate 7. A polyurethane waterproof coating layer 2 and a chlorinated polyethylene waterproof membrane layer 1 are sequentially arranged on the outside of the top plate of the frame and the outside of the side walls on both sides from inside to outside, and an M1500 waterproofing agent layer 6 is painted on the inside of the frame.

In this embodiment, the caulking board 7 is a hard sawdust board, and the thickness of the caulking board 7 is 2 cm.

Other parts in this embodiment adopt the prior art, and will not be repeated here.

The induced joint structure of this embodiment is suitable for the frame with settlement joints, mainly used for the joint between the jacked frame and the cast-in-place frame after it is in place.

Claims (5)

1. a frame bridge attractive joint structure, it is characterized in that: comprise setting attractive joint in the frame, joint filling board (7) is provided with in described attractive joint, framework dual-side at described attractive joint place is interval with some steel arranged along lengths of frame direction within the walls and cuts off (5) along frame height direction, described steel cuts off (5) through described joint filling board (7), outside the top board of the framework at described attractive joint place, outside the abutment wall of both sides and the inner side of framework be respectively equipped with waterproofing course; The outside that described attractive joint is in framework reinforcing bar is also embedded with steel limit waterstop (3) forming closed loop along attractive joint place, is embedded with the rubber fastening band (4) forming closed loop along attractive joint place in the frame concrete at described seam guide place; The polyurethane water-proof paint layer (2) set gradually from the inside to the outside outside the top board that described waterproofing course is included in framework and outside the abutment wall of both sides and Chlorinated polyethylene plastic sheets for waterproofing layer (1), and the M1500 waterproof oxidant layer (6) of brushing in the inner side of framework.

2. frame bridge attractive joint structure according to claim 1, is characterized in that: described steel limit waterstop (3) is GSE5 section steel edge waterstop, and described rubber fastening band (4) is GRE7 type rubber fastening band.

3. frame bridge attractive joint structure according to claim 1 and 2, it is characterized in that: described steel cuts off (5) and is made up of the round steel (10) of internal diameter to be the ferule (8) of 30mm and diameter be φ 28mm, described round steel (10) is inserted in described ferule (8), and described ferule is filled with pitch ointment in (8).

4. frame bridge attractive joint structure according to claim 1 and 2, is characterized in that: described joint filling board (7) is for being fixedly installed on the hard wood particle board in the middle of attractive joint.

5. frame bridge attractive joint structure according to claim 1 and 2, is characterized in that: the setting space that described steel cuts off (5) is 20cm.