CN101949132A - Construction Method of Formwork Bracket for Cap Beam of Independent Bridge Pier - Google Patents

Abstract

The invention discloses a building method of a template bracket of a capping beam of an independent pier, which solves the problem that the pouring quality of the capping beam of the pier is influenced by the settlement deformation of a capping beam bracket in the prior art. The method comprises the steps that two hinge mounting seats are welded in the middle of the outer side of a lower anchor ear (3) respectively, a front main beam supporting seat and a rear main beam supporting seat are welded in the middle of the outer side of an upper anchor ear (2) respectively, a left front oblique supporting beam (4) and a right front oblique supporting beam (6) are hinged between the front main beam (1) and the hinge mounting seats of the lower anchor ear (3), a triangular supporting frame of the rear main beam is built in the same method, a bent cap bottom die bracket (13) is placed between the front main beam (1) and the rear main beam, and a pier bent cap (14) is cast on the bent cap bottom die bracket (13). The invention greatly shortens the construction period and saves the cost.

Description

Construction Method of Formwork Bracket for Cap Beam of Independent Bridge Pier

Technical field:

The invention relates to a civil construction method, in particular to a method for building a cover beam formwork bracket of a cast bridge pier cover beam.

Background technique

In the process of building bridges, the construction scheme of erecting brackets is generally adopted when casting bridge piers and cap beams. This construction scheme has the disadvantages of long construction period, large capital investment, and low reuse rate of used materials. At the same time, due to the construction site The geological conditions are different, and ground subsidence is often encountered, which causes the settlement and deformation of the erected supports to seriously affect the casting quality of the bridge pier cap beam, and brings safety hazards to the constructed bridge.

Contents of the invention

The method for building formwork brackets for independent bridge pier cover beams provided by the present invention solves the problems of long construction period in the prior art, low reuse rate of used materials, large capital investment and settling deformation of the erected supports, which seriously affects the casting of bridge pier cover beams quality technical issues.

The present invention solves the above technical problems through the following technical solutions:

The construction method of the independent bridge pier cap beam formwork bracket includes the following steps:

The first step is to weld the first hinge mounting seat and the second hinge mounting seat on the outer middle of the two semi-circular lower hoops respectively, and weld the front main beam support seat and rear main beam on the outer middle of the two semi-circular upper hoops respectively For the supporting seat, the third hinge mounting seat and the fourth hinge mounting seat are respectively welded under the left and right ends of the front main beam, and the fifth hinge mounting seat and the sixth hinge mounting seat are respectively welded under the left and right ends of the rear main beam;

The second step is to use bolt clamps on the two semi-circular lower hoops to form a circular lower hoop in the middle of the side of the pier, and use bolts to clamp the two semi-annular upper hoops to form a circular upper hoop. ;

The third step is to fix the lower part of the front main beam with the front main beam support seat through bolts, and hinge one end of the left front inclined support beam to the third hinge installation seat welded under the left end of the front main beam through pins. , the other end of the left front oblique support beam is hinged to the first hinge mounting seat provided outside the front half ring of the lower hoop through a pin, and one end of the right front oblique support beam is welded to the fourth joint under the right end of the front main beam. The hinge mounts are hinged together, and the other end of the right front oblique support beam is hinged with the first hinge mount set outside the front half ring of the lower hoop;

The fourth step is to connect the bottom of the middle part of the rear main beam with the rear main beam support seat fixed on the outside of the rear half ring of the upper hoop through bolts, and connect one end of the left rear inclined support beam to the rear main beam through pins. The fifth hinge mounting seat welded under the left end of the crossbeam is hinged together, and the other end of the left rear inclined support beam is hinged together with the second hinge mounting seat provided outside the rear half ring of the lower hoop through a pin, and the right One end of the rear oblique support beam is hinged to the sixth hinge mounting seat welded under the right end of the rear main beam, and the other end of the right rear oblique support beam is connected to the second hinge mounting seat on the outside of the rear half ring of the lower hoop hinged together;

The fifth step is to place the bottom form bracket of the cover beam between the front main beam and the rear main beam, and cast the pier cover beam on the bottom form bracket of the cover beam.

The invention greatly shortens the construction period, saves the cost, improves the casting quality of the pier cover beam, is convenient to disassemble, and has a high material reuse rate.

Description of drawings

Fig. 1 is the structural representation of the front view direction of the cover beam formwork bracket built by the present invention

Fig. 2 is the structural representation of the side view direction of the cover beam formwork bracket built by the present invention

Detailed ways

The specific embodiment of the present invention is as follows:

The construction method of the independent bridge pier cap beam formwork bracket includes the following steps:

The first step is to weld the first hinge mounting seat 7 and the second hinge mounting seat 8 on the outer middle part of the two semi-circular lower hoops 3 respectively, and weld the front main beam 1 support on the outer middle part of the two semi-circular upper hoops 2 respectively. Seat 12 and the rear main beam support seat, respectively weld the third hinge mounting seat 9 and the fourth hinge mounting seat 10 under the left and right ends of the front main beam 1, and weld the fifth hinge installation respectively under the left and right ends of the rear main beam. seat 11 and the sixth hinge mount;

In the second step, the two semi-annular lower hoops 3 are formed in the middle of the side of the pier 15 with bolts to form a circular lower hoop, and the two semi-annular upper hoops 2 are formed into a ring at the upper end of the side of the pier 15 with bolts. shape hoop;

The third step is to connect the lower part of the middle part of the front main crossbeam 1 with the support seat 12 of the front main crossbeam 1 through bolts, and connect one end of the left front oblique support beam 4 to the third hinge under the left end of the front main crossbeam 1 through pins. The mounting base 9 is hinged together, the other end of the left front oblique support beam 4 is hinged together with the first hinge mounting base 7 provided on the outside of the front half ring of the lower hoop 3 through a pin, and one end of the right front oblique support beam 6 is connected to The fourth hinge mounting seat 10 welded below the right end of the front main beam 1 is hinged together, and the other end of the right front oblique support beam 6 is hinged with the first hinge mounting seat 7 provided outside the front half ring of the lower hoop 3;

In the fourth step, the lower part of the rear main beam is fixedly connected with the rear main beam support seat fixed on the outside of the rear half ring of the upper hoop 2 through bolts, and one end of the left rear inclined support beam 5 is connected with the pin through the pin. The fifth hinge mounting seat 11 welded below the left end of the rear main beam is hinged together, and the other end of the left rear inclined support beam 5 is passed through the pin and the second hinge mounting seat 8 provided outside the rear half ring of the lower hoop 3 Hinged together, hinge one end of the right rear oblique support beam with the sixth hinge mounting seat welded under the right end of the rear main beam, and connect the other end of the right rear oblique support beam with the outer side of the rear half ring of the lower hoop 3 The provided second hinge mounts 8 are hinged together;

The fifth step is to place the cover beam bottom mold bracket 13 between the front main beam 1 and the rear main beam, and cast the pier cover beam 14 on the cover beam bottom mold bracket 13 .

The cover beam formwork of the present invention adopts a factory-made steel formwork, and the formwork assembly adopts the form that the side formwork and the end formwork are seated on the bottom formwork, and are connected by bolts. The tripod at the lower part of the bottom mold is processed into a whole with the panel and the back reinforcement.

Claims (1)

1. the building method of an isolated pier bent cap pattern carrier may further comprise the steps:

The first step is welded the first hinge mount pad (7) and the second hinge mount pad (8) respectively at two semi-circular outer middle side parts of anchor ear (3) down, two semi-circular on the outer middle side part of anchor ear (2) weld preceding main beam (1) supporting seat (12) and back main beam supporting seat respectively, below the two ends, the left and right sides of preceding main beam (1), weld the 3rd hinge mount pad (9) and the 4th hinge mount pad (10) respectively, below the two ends, the left and right sides of back main beam, weld the 5th hinge mount pad (11) and the 6th hinge mount pad respectively;

Second step was being formed anchor ear under the annular with two semi-circular anchor ears (3) down with the bolt clip in the middle of bridge pier (15) side, two semi-circular anchor ears (2) of going up are formed anchor ear on the annular with the bolt clip in upper end, bridge pier (15) side;

The middle part of the 3rd step with preceding main beam (1) is fixed together below by bolt and preceding main beam (1) supporting seat (12), the 3rd hinge mount pad (9) that one end of LAO brace summer (4) left end by pin and preceding main beam (1) welds below is hinged, the other end of LAO brace summer (4) is hinged with the first hinge mount pad (7) of the arranged outside of the preceding semi-ring of following anchor ear (3) by pin, the 4th hinge mount pad (10) that the right-hand member of one end of right front bearing diagonal beam (6) and preceding main beam (1) welds below is hinged, the other end of right front bearing diagonal beam (6) is hinged with the first hinge mount pad (7) of the arranged outside of the preceding semi-ring of following anchor ear (3);

The middle part of the 4th step with the back main beam is fixed together below by the back main beam supporting seat of bolt with the outside of the back semi-ring that is fixedly installed on anchor ear (2), the 5th hinge mount pad (11) that one end of left back bearing diagonal beam (5) left end by pin and back main beam welds below is hinged, the other end of left back bearing diagonal beam (5) is hinged with the second hinge mount pad (8) of the arranged outside of the back semi-ring of following anchor ear (3) by pin, the 6th hinge mount pad that the right-hand member of one end of right back bearing diagonal beam and back main beam welds below is hinged, the other end of right back bearing diagonal beam is hinged with the second hinge mount pad (8) of the arranged outside of the back semi-ring of following anchor ear (3);

The 5th step was placed bent cap bed die carriage (13) between preceding main beam (1) and back main beam, at bent cap bed die carriage (13) top casting bridge pier bent cap (14).

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