CN116537066A - Transverse sliding device and method for precast beam - Google Patents

Abstract

The invention belongs to the technical field of highway bridge construction, and particularly provides a transverse sliding device and a method for a precast beam, wherein the device comprises a steel plate, a plurality of sleepers are arranged above the steel plate at intervals, steel rails are paved above the sleepers, a sliding mechanism is arranged above the steel rails, the sliding mechanism comprises a base, a movable wheel is arranged at the bottom of the base, and the movable wheel can slide along the steel rails; the steel section is arranged above the base, and the unloading sand box is arranged above the steel section; the base is also connected with a driving mechanism for driving the base to move along the steel rail, the driving mechanism comprises a winch, a steel wire rope is wound on the winch, and the other end of the steel wire rope is connected with the base. The invention can effectively solve the technical problems that the precast beam field can only be arranged at one side of the bridge due to limited field, the beam field arrangement direction is perpendicular to the trend of the bridge, and the beam body cannot normally transversely move to the left.

Description

Transverse sliding device and method for precast beam

Technical Field

The invention belongs to the technical field of highway bridge construction, and particularly relates to a transverse sliding device and method for a precast beam.

Background

At present, the upper structure of the expressway often adopts a precast beam structure form, is precast in a centralized way in a precast yard, and is installed and constructed through large hoisting equipment. However, due to factors such as land removal, land attribute, inallowing of owners to build red line roadbeds, site selection is difficult, the situation that a beam field is perpendicular to the trend of bridge positions is limited by the site, the left and right frames of a highway bridge are divided generally, and when a left beam body is erected, the technical problem that the beam body cannot normally transversely move to the left frame for erection occurs.

Disclosure of Invention

In order to solve the problems in the prior art, the transverse sliding device and the method for the precast beam are provided, and the technical problems that the precast beam field can only be arranged on one side of a bridge due to limited field, the setting direction of the beam field is perpendicular to the trend of the bridge, and the beam body cannot normally transversely move to the left are effectively solved.

The technical scheme adopted for solving the technical problems is as follows:

the technical scheme provides a transverse sliding device for a precast beam, which comprises a steel plate, wherein a plurality of sleepers are arranged above the steel plate at intervals, steel rails are paved above the sleepers, a sliding mechanism is arranged above the steel rails, the sliding mechanism comprises a base, a moving wheel is arranged at the bottom of the base, and the moving wheel can slide along the steel rails; a section steel is arranged above the base, and an unloading sand box is arranged above the section steel; the base is also connected with a driving mechanism for driving the base to move along the steel rail.

Preferably, the driving mechanism comprises a winch, a steel wire rope is wound on the winch, and the other end of the steel wire rope is connected with the base.

Preferably, an ear plate is welded on one side of the base, and the steel wire rope is connected with the ear plate.

The invention also provides a transverse sliding method for the precast beam, which adopts the transverse sliding device for the precast beam and comprises the following steps:

s1, selecting a precast beam field, planning the construction of the beam field, wherein the beam field is arranged at one side of a bridge, and the arrangement direction of the beam field is vertical to the trend of the bridge; the bridge is divided into a left width and a right width; dividing the bridge into a plurality of erection sections along the bridge bridging direction, and respectively marking the bridge as a 1 st hole, a 2 nd hole and a 3 rd hole … … nth hole;

s2, paving gantry crane rails on two sides of a beam field, wherein a first gantry crane is arranged on the gantry crane rails; one end of the gantry crane track extends to the left and right central line positions of the bridge, and occupies the space where the 1 st hole and the 3 rd hole of the right beam body are located; the first gantry crane can move to the position of the 2 nd hole of the right amplitude along the gantry crane track;

s3, erecting beam bodies of the 1 st hole, the 2 nd hole, the 3 rd hole and the 4 th hole of the left frame in advance by adopting a crane to form a left frame beam channel;

s4, erecting a beam body of a right-width 2 nd hole by adopting a first gantry crane; the beam bodies at the 1 st hole and the 3 rd hole of the right frame are not erected temporarily; the beam body of the left-width 2 nd hole and the beam body of the right-width 2 nd hole form a carrying platform together;

s5, installing two groups of transverse sliding devices which are arranged at intervals on the top of the carrying platform;

s51: paving steel plates at wet joints formed between the box girders of the No. 2 Kong Liangti; meanwhile, a steel plate is paved at the joint formed between the left web and the right web at the 2 nd hole;

s52: installing sleepers on the steel plate and the top of the box girder at the 2 nd hole;

s53: paving steel rails above the sleepers; the steel rail extends from the right edge of the right web to the center line position of the left web;

s54: a base is arranged above the steel rail, a section steel is arranged above the base, and an unloading sand box is arranged above the section steel; two groups of winches are arranged at the top of the box girder at the position of the left-width 2 nd hole and are connected with the corresponding base through steel wire ropes;

s55: building a concrete hardening ramp below the steel rail on the left box girder for normal passing of girder transporting gun cars; the top surface of the steel rail is flush with the top of the concrete hardening ramp; the beam transporting gun carriage is arranged along the length direction of the beam body;

s6, hanging a box girder to be erected on a sliding mechanism through a first gantry crane, and pressing the box girder to be erected on the top of an unloading sand box; controlling the elevation of the unloading sand box to be 5-10cm by a Yu Yunliang gun carriage;

s7, starting a winch, synchronously pulling the sliding mechanism to move along the steel rail, stopping the winch until the sliding mechanism moves to the position right above the beam transporting gun carriage, slowly removing sand in the unloading sand box, and slowly dropping a box beam to be erected on the beam transporting gun carriage;

s8, conveying the box girder with the erection to the tail part of a bridge girder erection machine through a girder conveying gun carriage, and arranging the box girder through the bridge girder erection machine;

s9, repeating the steps S6-S8, and setting up full-width beam bodies through a bridge girder erection machine to finish erection of all beam bodies except the box girders at the 1 st hole and the 3 rd hole of the right width;

and S10, after the bridge body is completely erected, when the first gantry crane does not occupy the space of the right-width 1 st hole and the right-width 3 rd hole, erecting the box girders at the right-width 1 st hole and the right-width 3 rd hole by adopting a crane, and completing the installation of the total bridge girder.

Compared with the prior art, the invention has the following advantages:

1. the transverse sliding device mainly comprises a steel plate, steel rails, a base, an unloading sand box, a driving mechanism and the like, and is matched with the first gantry crane of the beam field for use, so that the technical problems that the beam field can only be arranged on one side of a bridge due to limited field, the beam field arrangement direction is perpendicular to the trend of the bridge, and the beam body cannot normally transversely move to the left width can be effectively solved.

2. In the method, the beam bodies at the 1 st hole and the 2 nd hole are erected in advance through the crane, and the gantry crane track of the beam field extends to the left and right center line positions of the bridge, so that the first gantry crane can be ensured to move to the position above the 2 nd hole of the right frame; the transverse sliding device is arranged above the beam body of the 2 nd hole and matched with the lifting of the first gantry crane, so that the lifting and transverse sliding of the box beam to be erected can be realized, the transverse sliding device is matched with a gun carriage, the box beam to be erected can fall onto a beam transporting gun carriage through an unloading sand box, and the beam transporting gun carriage transports the beam body to be erected to the tail part of the bridge girder erection machine, so that beam feeding is realized.

3. In the method, the normal passing problem of the beam transporting gun carriage is considered, if no ramp is arranged at the steel rail, the beam transporting gun carriage cannot normally pass due to the obstruction of the steel rail; therefore, the rail is lifted to a certain height by the sleeper; concrete is poured at the bottom of the proper position of the steel rail to form a ramp, so that the steel rail can be reinforced and fixed, and a ramp for crossing obstacles can be provided for a beam-transporting gun carrier; meanwhile, the ramp does not influence the normal sliding range of the base on the steel rail, and has the advantages of convenience in construction, simplicity in operation and capability of greatly improving the erection speed.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a side view of a lateral glide assembly of the present invention.

Fig. 2 is a top view of a lateral glide of the present invention.

Fig. 3 is a schematic view of the beam field structure of the present invention.

Fig. 4 is a diagram of a bridge and beam field arrangement (after installation of the transverse glide) according to the present invention.

Fig. 5 is an enlarged schematic view of the bridge structure of fig. 4.

FIG. 6 is an enlarged schematic view of the beam and transverse slippage device structure at the 2 nd hole.

Fig. 7 is a schematic view of the structure of the beam-carrying gun carriage, the concrete-hardening ramp and the transverse sliding device in the invention.

Fig. 8 is a schematic view of the transverse sliding device in use according to the present invention.

Reference numerals illustrate:

1-a steel plate; 2-crossties; 3-steel rail; 4-a transverse sliding mechanism; 41-a base; 411-ear panels; 42-section steel; 43-unloading a sand box; 5-a steel wire rope; 6-a winch; 7-beam field; 8-a second gantry crane; 9-gantry crane tracks; 10-a first gantry crane; 11-construction of a temporary road; 12-1 st well; 13-2 nd well; 14-3 rd well; 15-transporting a beam gun carrier; 16-concrete hardening ramp; 17-a box girder to be erected; 18-installed beam body; 19 wet seams.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Example 1

As shown in fig. 1-2, this embodiment proposes a transverse sliding device for a precast beam, which includes a steel plate 1, where the steel plate 1 may be a whole plate structure or may be formed by a plurality of short plates arranged at intervals, and the steel plate 1 mainly plays a role of bottom support; a plurality of sleepers 2 which are arranged at intervals are arranged above the steel plate 1, steel rails 3 are paved above the sleepers 2, and two steel rails 3 are arranged; a sliding mechanism 4 is arranged above the steel rail 3, the sliding mechanism 4 comprises a base 41, a moving wheel is arranged at the bottom of the base 41, the moving wheel can slide along the steel rail 3, and the base 41 is equivalent to a sliding trolley and can move along the steel rail 3; the steel section 42 is arranged above the base 41, and I45 steel section is adopted; the sleeper 2 and the section steel 42 mainly play a role in transversely distributing load, the section steel 42 plays a certain role in increasing height, and the whole height is ensured; an unloading sand box 43 is arranged above the section steel 42; the unloading sand box 43 is a tool commonly used in construction, the unloading sand box 43 plays a role of a jack, the unloading sand box 43 is a steel pipe sleeve box, a sand unloading hole is arranged at the bottom of the unloading sand box, sand is filled in the steel pipe box, and the upper part of the unloading sand box presses against concrete load from a beam body; when the bracket needs to be removed, the bailey beam slowly falls down as long as sand in the sand box is discharged. The height required to fall is designed in advance, for example, 30cm, so that 30cm of compacted sand is required to be pre-stored in a sand box, and the sand box is of a conventional structure and is not repeated.

The base 41 is also connected with a driving mechanism for driving the base 41 to move along the steel rail 3, and the driving mechanism can be various, in the embodiment, a winch mechanism is preferred, the driving mechanism comprises a winch 6, a steel wire rope 5 is wound on the winch 6, and the other end of the steel wire rope 5 is connected with the base 41.

In order to conveniently install the steel wire rope 5, one side of the base 41 is welded with the lug 411, the steel wire rope 5 is connected with the lug 411 through a hanging pin shaft, and the steel wire rope is of a detachable structure and convenient to detach.

Example two

As shown in fig. 1-8, this embodiment further provides a transverse sliding method for a precast beam, and the transverse sliding device for a precast beam includes the following steps:

s1, selecting a precast beam field 7, planning the construction of the beam field 7, wherein the beam field 7 is arranged at one side of a bridge due to the limited field, and the arrangement direction of the beam field 7 is vertical to the trend of the bridge; the bridge is divided into a left width and a right width; dividing the bridge into a plurality of erection sections along the bridge bridging direction, and respectively marking the bridge as a 1 st hole 12, a 2 nd hole 13, a 3 rd hole 14 … … nth hole;

it should be noted that, in both the left and right frames, 4 box girders, i.e., side girder I, center girder II, center girder III, and side girder IV, are provided at the 1 st hole 12, and wet joints 19 are formed between the box girders.

S2, paving gantry crane rails 9 on two sides of a beam field 7, wherein a first gantry crane 10 is arranged on the gantry crane rails 9; one end of the gantry crane track 9 extends to the left and right central line positions of the bridge, and one end of the gantry crane track 9 occupies the space where the beam bodies of the 1 st hole 12 and the 3 rd hole 14 of the right frame are located; the first gantry crane 10 can move to the position of the right 2 nd hole 13 along the gantry crane track 9;

it should be noted that, the beam field 7 is divided into a beam manufacturing area and a beam storage area, the beam storage area is disposed at one end close to the bridge, and the beam storage area is provided with the first gantry crane 10; the beam making area is provided with a second gantry crane 8 alone, and the second gantry crane 8 and the first gantry crane 10 can share a gantry crane track 9.

S3, erecting beam bodies of a 1 st hole 12, a 2 nd hole 13, a 3 rd hole 14 and a 4 th hole of a left frame in advance by adopting a crane to form a left frame beam channel; this channel is used for installing bridge girder erection machine and transporting girder gun carrier 15; the bridge girder erection machine always moves along the left-width girder body, and the bridge girder erection machine can realize full-width erection.

It should be noted that, the crane is adopted to erect the left beam body with several holes in advance, which is determined by the actual length of the bridge girder erection machine, if the length of the bridge girder erection machine is longer, the left beam body with several holes can be erected, for example, the beam bodies with the 1 st hole 12, the 2 nd hole 13, the 3 rd hole 14, the 4 th hole, the 5 th hole and even the 6 th hole are erected, and the length of the bridge girder erection machine erected in advance is not unique and is determined by the actual construction equipment; in this embodiment, the erection of the left four-hole beam is described as an example.

S4, erecting a beam body of a right-width 2 nd hole 13 by adopting a first gantry crane 10; the beam bodies at the 1 st hole 12 and the 3 rd hole 14 of the right frame are not erected temporarily; the beam body of the left-width 2 nd hole 13 and the beam body of the right-width 2 nd hole 13 jointly form a carrying platform;

s5, installing two groups of transverse sliding devices which are arranged at intervals on the top of the carrying platform;

s51: paving a steel plate 1 at wet joints 19 formed among the box girders of the 2 nd hole 13 girder body; meanwhile, a steel plate 1 is paved at the joint formed between the left web and the right web at the position of the 2 nd hole 13;

s52: installing sleepers 2 on the top of the steel plate 1 and the box girder at the 2 nd hole 13;

s53: a steel rail 3 is paved above the sleeper 2; the steel rail 3 extends from the right edge of the right web to the center line position of the left web;

s54: a base 41 is arranged above the steel rail 3, a section steel 42 is arranged above the base 41, and an unloading sand box 43 is arranged above the section steel 42; two groups of winches 6 are arranged at the top of the box girder at the position of the left 2 nd hole 13, and the two groups of winches 6 are connected with the corresponding bases 41 respectively through steel wire ropes 5;

s55: building a concrete hardening ramp 16 below the steel rail 3 on the left box girder for normal passing of the girder transporting gun carriage 15; the top surface of the steel rail 3 is flush with the top of the concrete hardening ramp 16; the beam transporting gun carriage 15 is arranged along the length direction of the beam body;

the steel plate 1 and the sleeper 2 are arranged to raise the height of the steel rail 3, which may cause a barrier to the normal passage of the girder transporting gun carriage 15, and a concrete hardening ramp 16 is arranged to ensure the normal movement of the girder transporting gun carriage 15.

S6, hanging a box girder to be erected on the sliding mechanism 4 through the first gantry crane 10, and pressing the box girder to be erected on the top of the unloading sand box 43; controlling the height of the unloading sand box 43 to be 5-10cm for a Yu Yunliang gun carriage;

s7, starting a winch 6, synchronously pulling the sliding mechanism 4 to move along the steel rail 3, stopping the winch 6 until the sliding mechanism 4 moves to the position right above the girder transporting gun carriage 15, slowly removing sand in the unloading sand box 43, and slowly dropping a box girder to be erected on the girder transporting gun carriage 15;

it should be noted that the distance between the two sets of transverse sliding mechanisms 4 is required to be smaller than the length of the box girder; thus, when the box girder to be erected is placed on the two groups of transverse sliding mechanisms 4, the two ends of the box girder are arranged in a dew-head shape, when the sliding mechanisms 4 drive the box girder to move to the position right above the girder transporting gun carriage 15 and fall, the end part of the box girder can be just pressed and held on the girder transporting gun carriage 15, the girder transporting gun carriage 15 is divided into a driving carriage and a traction carriage, and the two ends of the box girder just fall on the driving carriage and the traction carriage.

S8, conveying the box girder with the erection to the tail part of a bridge girder erection machine through a girder conveying gun carriage 15, and arranging the box girder through the bridge girder erection machine;

s9, repeating the steps S6-S8, and arranging full-width beam bodies along the bridging direction through a bridging machine frame to finish the erection of all the beam bodies except the box beams at the 1 st hole 12 and the 3 rd hole 14 of the right width;

and S10, after the bridge body is completely erected, when the first gantry crane 10 does not occupy the space of the right 1 st hole 12 and the 3 rd hole 14, erecting the box girders at the positions of the right 1 st hole 12 and the 3 rd hole 14 by adopting a crane, and completing the installation of the main bridge girder.

The method mainly comprises the following steps:

the first gantry crane 10 spans 26 meters, the gantry crane track 9 extends to the center line position of the left and right sides of the bridge, 4 box girders at the 2 nd holes of the right side are convenient to install, and the 1 st holes and the 3 rd holes of the right side are occupied by the first gantry crane 10 support legs, so that the 1 st holes and the 3 rd holes of the right side are not erected temporarily, and after the bridge is erected completely, the first gantry crane does not occupy the 1 st holes and the 3 rd holes of the right side, and the girder is erected by adopting a crane, so that the installation of the total bridge girder is completed.

Application work efficiency:

the transverse sliding device mainly comprises the steel plate 1, the steel rail 3, the base 41, the unloading sand box 43, the driving mechanism and other parts, and is matched with the first gantry crane 10 of the beam field 7 for use, so that the technical problems that the prefabricated beam field can only be arranged on one side of a bridge due to limited field, the beam field arrangement direction is perpendicular to the trend of the bridge, and the beam body cannot normally transversely move to the left width can be effectively solved.

In the method, the beam bodies at the 1 st hole 12 and the 2 nd hole 13 are erected in advance through the crane, and the gantry crane track 9 of the beam field 7 extends to the left and right center line positions of the bridge, so that the first gantry crane 10 can be ensured to move to the position above the 2 nd hole 13 of the right frame; the transverse sliding device is arranged above the beam body of the 2 nd hole 13, and is matched with the lifting of the first gantry crane 10, so that the lifting and transverse sliding of the box beam to be erected can be realized, the transverse sliding device is matched with a gun carriage, the box beam to be erected can fall onto the beam transporting gun carriage 15 through the unloading sand box 43, and the beam transporting gun carriage 15 transports the beam body to be erected to the tail of the bridge girder erection machine, so that beam feeding is realized.

In the method, considering the problem of normal passing of the beam transporting gun carriage 15, if no ramp is arranged at the steel rail 3, the beam transporting gun carriage 15 cannot normally pass due to the obstruction of the steel rail 3; therefore, the rail 3 is lifted to a certain height by the sleeper 2; concrete is poured at the bottom of the proper position of the steel rail 3 to form a ramp, so that the steel rail 3 can be reinforced and fixed, and a ramp for crossing obstacles can be provided for the girder transporting gun carrier 15; meanwhile, the ramp does not influence the normal sliding range of the base 41 on the steel rail 3, and has the advantages of convenient construction, simple operation and capability of greatly improving the erection speed.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (4)

1. The transverse sliding device for the precast beam is characterized by comprising a steel plate, wherein a plurality of sleepers are arranged above the steel plate at intervals, steel rails are paved above the sleepers, a sliding mechanism is arranged above the steel rails, the sliding mechanism comprises a base, a moving wheel is arranged at the bottom of the base, and the moving wheel can slide along the steel rails; a section steel is arranged above the base, and an unloading sand box is arranged above the section steel; the base is also connected with a driving mechanism for driving the base to move along the steel rail.

2. A transverse sliding apparatus for precast beams as claimed in claim 1, wherein the driving mechanism includes a hoist around which a wire rope is wound, the other end of the wire rope being connected to the base.

3. A transverse sliding apparatus for precast beams as claimed in claim 2, wherein an ear plate is welded to one side of the base, and the wire rope is connected to the ear plate.

4. A transverse sliding method for a precast beam, characterized in that a transverse sliding apparatus for a precast beam according to any one of claims 2 to 3 is employed, comprising the steps of:

s1, selecting a precast beam field, planning the construction of the beam field, wherein the beam field is arranged at one side of a bridge, and the arrangement direction of the beam field is vertical to the trend of the bridge; the bridge is divided into a left width and a right width; dividing the bridge into a plurality of erection sections along the bridge bridging direction, and respectively marking the bridge as a 1 st hole, a 2 nd hole and a 3 rd hole … … nth hole;

s2, paving gantry crane rails on two sides of a beam field, wherein a first gantry crane is arranged on the gantry crane rails; one end of the gantry crane track extends to the left and right central line positions of the bridge, and occupies the space where the 1 st hole and the 3 rd hole of the right beam body are located; the first gantry crane can move to the position of the 2 nd hole of the right amplitude along the gantry crane track;

s3, erecting beam bodies of the 1 st hole, the 2 nd hole, the 3 rd hole and the 4 th hole of the left frame in advance by adopting a crane to form a left frame beam channel;

s4, erecting a beam body of a right-width 2 nd hole by adopting a first gantry crane; the beam bodies at the 1 st hole and the 3 rd hole of the right frame are not erected temporarily; the beam body of the left-width 2 nd hole and the beam body of the right-width 2 nd hole form a carrying platform together;

s5, installing two groups of transverse sliding devices which are arranged at intervals on the top of the carrying platform;

s51: paving steel plates at wet joints formed between the box girders of the No. 2 Kong Liangti; meanwhile, a steel plate is paved at the joint formed between the left web and the right web at the 2 nd hole;

s52: installing sleepers on the steel plate and the top of the box girder at the 2 nd hole;

s53: paving steel rails above the sleepers; the steel rail extends from the right edge of the right web to the center line position of the left web;

s54: a base is arranged above the steel rail, a section steel is arranged above the base, and an unloading sand box is arranged above the section steel; two groups of winches are arranged at the top of the box girder at the position of the left-width 2 nd hole and are connected with the corresponding base through steel wire ropes;

s55: building a concrete hardening ramp below the steel rail on the left box girder for normal passing of girder transporting gun cars; the top surface of the steel rail is flush with the top of the concrete hardening ramp; the beam transporting gun carriage is arranged along the length direction of the beam body;

s6, hanging a box girder to be erected on a sliding mechanism through a first gantry crane, and pressing the box girder to be erected on the top of an unloading sand box; controlling the elevation of the unloading sand box to be 5-10cm by a Yu Yunliang gun carriage;

s7, starting a winch, synchronously pulling the sliding mechanism to move along the steel rail, stopping the winch until the sliding mechanism moves to the position right above the beam transporting gun carriage, slowly removing sand in the unloading sand box, and slowly dropping a box beam to be erected on the beam transporting gun carriage;

s8, conveying the box girder with the erection to the tail part of a bridge girder erection machine through a girder conveying gun carriage, and arranging the box girder through the bridge girder erection machine;

s9, repeating the steps S6-S8, and setting up full-width beam bodies through a bridge girder erection machine to finish erection of all beam bodies except the box girders at the 1 st hole and the 3 rd hole of the right width;

and S10, after the bridge body is completely erected, when the first gantry crane does not occupy the space of the right-width 1 st hole and the right-width 3 rd hole, erecting the box girders at the right-width 1 st hole and the right-width 3 rd hole by adopting a crane, and completing the installation of the total bridge girder.