CN115748483A

CN115748483A - Pile-pier-beam integrated bridge fabrication machine construction method

Info

Publication number: CN115748483A
Application number: CN202211494654.5A
Authority: CN
Inventors: 张海涛; 曹振彪; 曹承杰; 董罡朴; 梁志超; 张立建
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-07

Abstract

The invention relates to a construction method of a pile-pier-beam integrated bridge fabrication machine, which comprises the following steps: the girder, can follow girder both way movement connects and is in preceding landing leg, back landing leg, the place of girder lower part levels module, pile foundation construction module, preceding auxiliary leg, back auxiliary leg and both way movement connect and be in the overhead traveling crane hoist and mount system on girder upper portion. The invention realizes the integrated operation flow of bridge construction, completes the whole bridge construction process from site leveling, pile foundation construction, bearing platform construction, pier body capping beam construction to beam slab erection, the supporting leg has a self-anchoring device, does not need to build a supporting foundation of the supporting leg of equipment, can adapt to bridge construction in areas which cannot be built for the environment protection of the sidewalk, mountain and forest areas with dangerous terrain, small curve radius, urban overpass construction with small occupied area requirement and the like, has wide adaptation working condition, high construction efficiency and high equipment integration level, can reduce equipment investment, has good economy, can reduce the influence on the environment, and realizes green construction.

Description

Construction method of pile-pier-beam integrated bridge fabrication machine

Technical Field

The invention relates to the technical field of bridge construction, in particular to a pile-pier-beam integrated bridge fabrication machine construction method.

Background

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge is generally composed of an upper structure, a lower structure, a support and an accessory structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles, and mainly comprises a plurality of beam plates, the lower structure comprises a bridge abutment, a bridge pier and a foundation, and the support is a force transmission device arranged at the bridge span structure and the bridge pier or the support of the bridge abutment.

The bridge fabrication machine is equipment for placing a prefabricated beam plate on a prefabricated pier. The bridge making machine belongs to the field of bridge construction, and its main function is to lift the beam slab, then transfer it to its place and put it down.

At present, the common process of bridge construction is still mainly manual construction, mechanical equipment assists construction, if common equipment for pile foundation construction comprises an impact rotary machine, a manual hole digging machine, a circulating rotary machine and a rotary drilling rig, the common equipment for bearing platform construction is that a crane assists manual work to install templates and steel bars, a pier body capping beam is also constructed by a crane or a tower crane in an assisting mode, a beam slab is erected by a bridge fabrication machine to hoist and mount a precast beam, during construction, other auxiliary equipment is needed to level the field, supporting legs need to be supported on the constructed capping beam or other structures, span-by-span construction is achieved, construction efficiency is low, pile driving equipment is only suitable for soft stratums, and in a mountain forest area with hard geology, a precast pile construction process is adopted, holes need to be led in advance, and then precast piles are installed and constructed.

Before construction, a construction access road is required to be constructed to carry out construction of pile foundations and bearing platforms, the construction access road can cause great damage to the environment, a construction platform is often required to be built by adopting traditional construction with the investment of a large amount of manpower, material resources and financial resources, the environment is damaged, and the construction efficiency is low.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems in the prior art, the invention provides a pile-pier-beam integrated bridge fabrication machine and a construction method, so as to solve the problems of the prior art that construction roads are required, construction platforms are erected, the construction efficiency is low, the construction cost is high, and the environment is damaged.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

a pier-beam integrated bridge fabrication machine comprises: the girder, can follow girder both way movement connects and is in preceding landing leg, back landing leg, the place of girder lower part levels module, pile foundation construction module, preceding auxiliary leg, back auxiliary leg and both way movement connect and be in the overhead traveling crane hoist and mount system on girder upper portion.

Preferably, the main beam spans a multi-span range, two adjacent spans are hinged, and the bridge construction with the curvature radius R of a narrow space being less than 200m can be realized.

Preferably, the site leveling module includes: the device comprises a leveling support leg, a first sliding device arranged at the upper end of the leveling support leg, a first anchoring device arranged at the lower part of the leveling support leg, and leveling equipment arranged on one side of the lower part of the leveling support leg;

the pile foundation construction module includes: pile foundation landing leg, setting are in second slider, the setting of pile foundation landing leg upper end are in the second anchor of pile foundation landing leg lower part sets up the pore-forming equipment of pile foundation landing leg lower part one side.

Preferably, the front support leg, the rear support leg, the leveling support leg, the pile foundation support leg, the front auxiliary support leg and the rear auxiliary support leg are all telescopic support legs;

and the lower ends of the front supporting leg and the front auxiliary supporting leg are provided with third anchoring devices.

Preferably, the first anchoring device, the second anchoring device and the third anchoring device have the same structure and respectively comprise a supporting plate fixedly connected with the lower part of the corresponding supporting leg, and a plurality of ground grabbing nails are arranged on the bottom surface of the supporting plate.

Preferably, the overhead traveling crane hoisting system comprises three overhead traveling cranes, a first overhead traveling crane, a second overhead traveling crane and a third overhead traveling crane which are respectively arranged from the rear end to the front end of the main beam, and the three overhead traveling cranes can be supported on the upper part of the main beam in a bidirectional moving manner;

the three overhead traveling cranes all include: the connecting rods are perpendicular to the cross beam and are positioned on the same side of the cross beam;

the lower end of each connecting rod is provided with a pulley, and the lower part of the cross beam is provided with a hoisting trolley which can move along the axial direction of the cross beam in two directions.

Preferably, each crown block of the crown block hoisting system is provided with a slewing mechanism and an angle adjusting oil cylinder for adjusting the angle of hoisting objects on the lower part of the hoisting trolley.

According to the pile-pier-beam integrated bridge fabrication machine, integrated operation of site leveling, pile foundation construction, bearing platform construction and pier body capping beam construction to a beam slab erection whole bridge construction process in bridge construction can be achieved through the front supporting leg, the rear supporting leg, the site leveling module and the pile foundation construction module which can walk and a crown block hoisting system on the upper portion of a main beam.

A construction method using the pier-beam integrated bridge fabrication machine of any one of claims 1 to 7, comprising the steps of:

s1, pile foundation construction: the field leveling module performs field leveling on a pile position to be constructed, the pile foundation construction module performs pile foundation hole drilling construction, and the crown block hoisting system hoists a reinforcement cage to enter a pile foundation hole and pours pile foundation concrete;

s2, bearing platform construction: the overhead traveling crane hoisting system hoists the bearing platform template and the binding steel bars to a bearing platform construction station, completes the installation and the binding of the bearing platform template and then performs the pouring of the bearing platform;

s3, construction of the bridge pier and the bent cap: the overhead traveling crane hoisting system hoists the prefabricated piers and the capping beams to a bearing platform where the front supporting legs are located, and the construction of the piers and the capping beams is carried out;

s4, beam and slab construction: the crane hoisting system hoists the precast beam plate to the position of the cover beam to complete beam plate erection;

s5, bridge fabrication machine via hole: the main beam moves forwards for one span, so that the front supporting leg is supported at the position of the bearing platform at the forefront, and the front auxiliary supporting leg is supported on the ground at the position in front of the pile position to be constructed

And S6, returning to the step S1, and preparing to perform the next cycle construction operation.

According to the construction method of the pile-pier-beam integrated bridge fabrication machine, when the site leveling module and the pile foundation construction module are used for constructing the front pile foundation and the bearing platform, the overhead traveling crane hoisting system can be used for carrying out beam slab erection operation on the beam span of which the rear side is subjected to capping construction, a certain maintenance time is required in each construction stage, the overhead traveling crane hoisting system cannot be used due to overlapping of construction time, simultaneous operation of the pile foundation, the bearing platform, the pier body and the capping beam of a three-span internal bridge can be realized, and the construction efficiency is high.

Preferably, before step S1, the step of assembling the bridge fabrication machine is performed:

firstly, at least 3 bearing platforms, 2 pier bodies and the erection of a first section of beam are completed on site;

a1, supporting the site leveling module at a foremost bearing platform, supporting a front support leg on the ground of a pier at a distance behind the site leveling module, supporting a rear support leg on a beam slab at a distance behind the front support leg, and supporting a pile foundation construction module at a pile position to be constructed;

a2, a first section of main beam is hung between the front supporting leg and the rear supporting leg;

a3, a second section of main beam is hung between the front support leg and the field leveling module;

a4, hoisting a third section of main beam between the site leveling module and the pile foundation construction module;

a5, hinging three main beams together, wherein the front auxiliary supporting leg is arranged at the foremost end of the main beam and supported on the ground, and the rear auxiliary supporting leg is arranged at the rearmost end of the main beam and supported on a beam plate;

and A6, installing the crown block hoisting system and hoisting the sewage treatment module to the first section of beam to complete the assembly of the starting position of the bridge fabrication machine.

Preferably, the step S1 includes the steps of:

s1.1, moving the pile foundation construction module to the front of a pile position to be constructed for temporary support, moving the site leveling module to the pile position to be constructed for self-anchoring, leveling the construction ground after the support is stable, returning to the previous station after the support is stable to start bearing platform construction operation, and performing support operation if the bearing platform is available;

s1.2, after the central point of the pile position is released, the pile foundation construction module is moved to a pile foundation construction position, and corresponding pile foundation drilling slag treatment equipment is arranged to a construction station by a second crown block and a third crown block of the crown block hoisting system;

s1.3, adjusting the position of the pile foundation construction module to carry out self-anchoring, and starting drilling construction;

s1.4, after drilling is finished, hoisting pile foundation reinforcement cage holes by the second crown block and the third crown block;

and S1.5, hoisting the concrete by the second crown block and the third crown block to carry out pile foundation pouring construction and maintenance.

Preferably, the bearing platform in the step S2 is constructed by a cast-in-place method, and the method includes the following steps:

s2.1, excavating a bearing platform foundation pit by the site leveling module, and performing pile breaking operation of a pile foundation in a matched manner;

s2.2, tamping a bearing platform foundation;

s2.3, hoisting a bearing platform template and binding steel bars to a bearing platform construction position from the tail part of the bridge fabrication machine by a second crown block and a third crown block of the crown block hoisting system, installing the template and binding the steel bars;

and S2.4, hoisting concrete by the second crown block and the third crown block to carry out bearing platform pouring construction and maintenance.

Preferably, the bearing platform in the step S2 is constructed by prefabricating and assembling, and the method includes the following steps:

s2.2, tamping a bearing platform foundation;

s2.3, a first crown block and a second crown block of the crown block hoisting system hoist the prefabricated bearing platform to a construction station, the first crown block and the second crown block are used for aligning the interface of the prefabricated bearing platform with the pile by virtue of a swing mechanism and an angle adjusting oil cylinder, and the prefabricated bearing platform is slowly put down to complete the installation of the bearing platform;

and S2.4, connecting the prefabricated bearing platform and the pile foundation by adopting cast-in-place high-performance concrete for wet connection.

Preferably, in the step S3, the construction of prefabricating and assembling the pier and the bent cap includes the following steps:

s3.1, hoisting the prefabricated pier stud to a constructed bearing platform from the tail part of a main beam by a first crown block and a second crown block of the crown block hoisting system, adjusting the interface of the pier stud to be aligned with the bearing platform by the aid of a slewing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly lowering the pier stud to complete installation of the pier stud;

s3.2, connecting the pier stud with the pile cap segment by using a grouting sleeve;

and S3.3, after the strength of the grouting material between the pier stud and the bearing platform section meets the design requirement, the prefabricated bent cap is installed, and the operation process is the same as the pier stud hoisting process.

Preferably, the beam slab in the step S4 is prefabricated and assembled, and the method includes the following steps:

s4.1, after the strength of the cover beam meets the design requirement, hoisting the precast beam plate by a first crown block and a second crown block of the crown block hoisting system, advancing to the cover beam along the main beam, and slowly lowering the precast beam plate to a position 30-50cm away from the base stone support;

and S4.2, driving the first crown block and the second crown block to move transversely and adjust so as to accurately position the beam slab and the pad stone support, and slowly putting down the prefabricated beam slab to complete beam slab erection.

Preferably, the step S5 includes the steps of:

s5.1, retracting the rear supporting leg, keeping the other supporting legs still, moving the rear supporting leg forward by a span distance, and supporting the rear supporting leg;

s5.2, retracting the front auxiliary supporting leg and the rear auxiliary supporting leg, keeping the other supporting legs still, moving the main beam forward by a span distance, and supporting the front auxiliary supporting leg and the rear auxiliary supporting leg;

s5.3, the pile foundation construction module is folded, moved forward by a span distance to the next pile foundation construction station, and supported on the ground;

s5.4, the field leveling module is folded, moved forward by a span distance to the next bearing platform construction station, and supported on the ground;

and S5.5, the front supporting legs are folded, moved forwards by a span distance to the next constructed bearing platform and supported on the ground on the front side of the bearing platform to complete hole passing.

(III) advantageous effects

The beneficial effects of the invention are:

the pile-pier-beam integrated bridge fabrication machine construction method realizes the integrated operation flow of bridge construction, and completes all bridge construction processes from site leveling, pile foundation construction, cushion cap construction, pier body capping beam construction to beam slab erection.

According to the invention, the main beam adopts a hinged structure, the supporting legs are provided with self-anchoring devices, the supporting foundation of the supporting legs of equipment is not required to be built, the construction method can be suitable for constructing an environmental protection area of a sidewalk, a mountain and forest area with dangerous terrain, bridge construction with small curve radius (R <200 m), urban overpass construction with small floor space requirement and the like, and is convenient and stable and wide in application condition; the construction method has the advantages that simultaneous operation of the three-span inner bridge pile foundation, the bearing platform and the pier body capping beam is realized, construction efficiency is high, bridge prefabrication process construction can be carried out, construction of a bridge cast-in-place process can be matched, equipment integration degree is high, related operators can be reduced, auxiliary construction of equipment such as a digging machine and a loading machine is not needed, equipment investment is reduced, economy is good, garbage treatment modules such as sewage and waste residues of a bridge fabrication machine can reduce influence on the environment, and green construction is realized.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the pier-beam integrated bridge fabrication machine of the invention;

fig. 2 is a schematic structural view of the pile foundation construction module in fig. 1;

FIG. 3 is a schematic view of the structure of the site leveling module of FIG. 1;

FIG. 4 is a schematic structural view of the overhead crane hoisting system of FIG. 1;

FIG. 5 is a schematic view of a process of the construction method of the pier-girder integrated bridge fabrication machine of the present invention;

FIG. 6 is a schematic view of another process of the pier-girder integrated bridge fabrication method of the present invention;

FIG. 7 is a schematic view of another process of the pier-girder integrated bridge fabrication method according to the present invention;

fig. 8 is a schematic view of still another process of the pile-pier beam integrated bridge fabrication machine construction method of the present invention.

[ description of reference ]

1: a main beam;

2: a front leg;

3: a rear leg;

4: a field leveling module;

41: a first sliding device; 42: leveling the supporting legs; 43: leveling equipment; 44: a first anchoring device;

5: a pile foundation construction module;

51: pile foundation support legs; 52: a second sliding device; 53: a pore-forming device; 54: a second anchoring device;

6: a front auxiliary leg;

7: a rear auxiliary leg;

8: a crane hoisting system;

81: a cross beam; 82: a beam slipping wheel; 83: hoisting a trolley;

9: a sewage treatment module.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present embodiments of the invention, which are illustrated in the accompanying drawings.

Example 1

As shown in fig. 1-4, the present embodiment discloses a pier-beam integrated bridge fabrication machine, which includes: girder 1, can follow 1 both way movement of girder is connected preceding landing leg 2, back landing leg 3, the place of 1 lower part of girder level and smooth module 4, pile foundation construction module 5, preceding auxiliary leg 6, back auxiliary leg 7 and both way movement are connected overhead traveling crane hoist and mount system 8 on girder 1 upper portion.

Girder 1 strides the multi-span scope, and adjacent two strides are articulated connection, place level module 4 includes: leveling leg 42, first sliding device 41 arranged at the upper end of leveling leg 42, first anchoring device 44 arranged at the lower part of leveling leg 42, leveling equipment 43 arranged on one side of the lower part of leveling leg 42, pile foundation construction module 5 includes: the pile foundation supporting leg 51, a second sliding device 52 arranged at the upper end of the pile foundation supporting leg 51, a second anchoring device 54 arranged at the lower part of the pile foundation supporting leg 51, and a hole forming device 53 arranged at one side of the lower part of the pile foundation supporting leg 51.

Level landing leg 42 through first slider 41 with 1 sliding connection of girder, pile foundation landing leg 51 through second slider 52 with 1 sliding connection of girder, preceding landing leg 2 back landing leg 3 level landing leg 42 pile foundation landing leg 51 preceding auxiliary leg 6 back auxiliary leg 7 is the retractable landing leg, preceding landing leg 2 preceding auxiliary leg 6 lower extreme all is provided with the third anchor.

The first anchoring device 44, the second anchoring device 54 and the third anchoring device have the same structure, and each of the first anchoring device, the second anchoring device and the third anchoring device includes a supporting plate fixedly connected with the lower portion of the corresponding supporting leg, and a plurality of ground grabbing nails are arranged on the bottom surface of the supporting plate.

When the front supporting leg 2, the leveling supporting leg 42, the pile foundation supporting leg 51 and the first anchoring device 44, the second anchoring device 54 and the third anchoring device arranged at the lower part of the front auxiliary supporting leg 6 are used, the first anchoring device, the second anchoring device and the third anchoring device are directly anchored on the ground, the first anchoring device, the second anchoring device and the third anchoring device can be driven by the corresponding telescopic supporting legs to carry out self-anchoring, and the stability of anchoring of the supporting legs is ensured by a plurality of ground grabbing nails.

Two adjacent spans of the main beam 1 are hinged, and bridge construction with curvature radius R of less than 200m in narrow space can be realized.

The overhead crane hoisting system 8 comprises three overhead cranes, a first overhead crane, a second overhead crane and a third overhead crane which are respectively arranged from the rear end to the front end of the main beam 1, and the three overhead cranes can be supported on the upper part of the main beam 1 in a bidirectional moving manner;

the three overhead traveling cranes all include: the connecting rod mechanism comprises a cross beam 81 and two connecting rods arranged at two ends of the cross beam 81, wherein the two connecting rods are perpendicular to the cross beam 81 and are positioned on the same side of the cross beam 81;

the lower end of each connecting rod is provided with a pulley 82, and the lower part of the cross beam 81 is provided with a hoisting trolley 83 capable of moving along the axial direction of the cross beam 81 in two directions;

each crown block of the crown block hoisting system 8 is provided with a swing mechanism and an angle adjusting oil cylinder for adjusting the angle of hoisting objects at the lower part of the hoisting trolley 83.

The bridge fabrication machine is a double-beam bridge fabrication machine, three crown blocks are supported on beam frames on two sides of a main beam 1, a hoisting trolley 83 is arranged on the lower portion of a cross beam 81 of each crown block, the hoisting trolley 83 can move in two directions along the axial direction of the cross beam 81, the cross beam 81 is perpendicular to the main beam 1, position adjustment of hoisted objects in the horizontal direction can be achieved through the pulleys 82 and the hoisting trolley 83, and accurate positioning of a prefabricated bearing platform, a pier stud, a cover beam, a beam plate and the like can be achieved through a swing mechanism and an angle adjusting oil cylinder of the crown blocks.

According to the pile-pier-beam integrated bridge fabrication machine, integrated operation of all bridge construction processes from site leveling, pile foundation construction, bearing platform construction, pier body construction, cover beam construction to beam slab erection and the like in bridge construction can be realized through the walkable front supporting legs 2, rear supporting legs 3, site leveling modules 4, pile foundation construction modules 5 and the crown block hoisting system 8 matched with the upper portion of the main beam 1.

The invention relates to a construction method of a pile-pier-beam integrated bridge fabrication machine, which comprises the following steps:

s1, pile foundation construction: the site leveling module 4 performs site leveling on a pile site to be constructed, the pile foundation construction module 5 performs pile foundation hole drilling construction, and the crown block hoisting system 8 hoists a reinforcement cage into a pile foundation hole to cast pile foundation concrete;

s2, bearing platform construction: the crown block hoisting system 8 hoists the bearing platform template and the bound reinforcing steel bars to a bearing platform construction station to complete the installation of the bearing platform template and the binding of the reinforcing steel bars, and then the bearing platform is poured;

s3, construction of the bridge pier and the bent cap: the overhead travelling crane hoisting system 8 hoists the prefabricated piers and the capping beams to the bearing platform where the front supporting legs 2 are positioned, and then construction of piers and capping beams is carried out;

s4, beam and slab construction: the overhead crane hoisting system 8 hoists the precast beam plate to the capping beam position to complete beam plate erection;

s5, bridge fabrication machine via hole: the main beam 1 moves forwards for a span, so that the front supporting leg 2 is supported at a bearing platform at the forefront, and the front auxiliary supporting leg 6 is supported on the ground in front of a pile position to be constructed;

Further, before step S1, a step of assembling a bridge fabrication machine is performed:

as shown in fig. 5 (1), on-site at least 3 bearing platforms, 2 pier bodies and the erection of a first section beam are completed;

a1, supporting the site leveling module 4 on the ground at the foremost 1# cushion cap and anchoring the site leveling module through a first anchoring device 44, supporting the front support legs 2 on the pier ground at a span distance behind the site leveling module 4 and anchoring the front support legs through a third anchoring device, supporting the rear support legs 3 on a beam slab which is constructed at a span distance behind the front support legs 2, supporting the pile foundation construction module 5 at a 2# pile position to be constructed and anchoring the pile foundation construction module by using a second anchoring device 54;

a2, hoisting a first girder section between the front supporting leg 2 and the rear supporting leg 3;

a3, a second section of main beam is hung between the front support leg 2 and the field leveling module 4;

a4, a third section of main beam is hoisted between the site leveling module 4 and the pile foundation construction module 5;

a5, hinging three main beams together, mounting the front auxiliary supporting leg 6 at the foremost end of the main beam 1 to be supported on the ground, and fixing the front auxiliary supporting leg by a third anchoring device at the lower part of the front auxiliary supporting leg 6, and mounting the rear auxiliary supporting leg 7 at the rearmost end of the main beam 1 to be supported on a constructed beam plate;

and A6, sequentially installing three crown blocks of the crown block hoisting system 8 from the rear end to the front end of the main beam 1 on the upper part of the main beam 1, and transporting the sewage treatment module 9 to a beam plate which is constructed to finish the assembly of the starting position of the bridge fabrication machine.

The pile foundation construction step S1 comprises the following steps:

s1.1, moving the pile foundation construction module 5 to the front of a 2# pile position to be constructed for temporary anchoring support, lifting the site leveling module 4 from the 1# bearing platform to the 2# pile position to be constructed for self-anchoring through a first anchoring device 44, leveling the 2# pile position through leveling equipment 43 after the leveling support legs 42 are fixed, and returning the site leveling module 4 to the 1# bearing platform for anchoring for supporting operation after the site leveling operation is finished;

s1.2, after a measurer releases a pile position central point at a 2# pile position, the pile foundation construction module 5 is moved back to the 2# pile foundation construction position and supported on the ground, pile foundation drilling slag treatment equipment is hoisted to the 2# pile construction position by a second crown block and a third crown block of the crown block hoisting system 8, and the drilling slag treatment equipment is installed and connected with the sewage treatment module 9;

s1.3, adjusting the position of the pile foundation construction module 5, aligning the hole forming equipment 53 of the pile foundation construction module 5 to the center of a pile position, anchoring through a second anchoring device 54, starting drilling construction, and selecting rotary drilling or impact drilling according to actual working conditions on site;

s1.4, after pile foundation holes are completed, moving the pile foundation construction module 5 to the front of a No. 2 pile foundation for supporting, hoisting a pile foundation reinforcement cage to the position above the pile foundation hole by using a second crown block and a third crown block of the crown block hoisting system 8, aligning the reinforcement cage with the pile foundation holes through slewing mechanisms and angle adjusting oil cylinders of the second crown block and the third crown block, slowly dropping a hoisting trolley 83, and placing the reinforcement cage into the completed pile foundation holes;

s1.5, through the transport vechicle with concrete transportation extremely that the pile foundation of will pouring used the beam slab department of girder 1 rear end, reuse overhead traveling crane hoist system 8 No. two overhead traveling cranes and No. three overhead traveling cranes hoist concrete to 2# pile foundation hole department, accomplish the pile foundation by artifical supplementary cooperation and pour to carry out the maintenance.

In the embodiment, the construction of the bearing platform is completed at the 1# pile position, so that the step S2 of the construction of the bearing platform can be skipped, and the hole passing of the bridge fabrication machine can be directly carried out;

the bridge fabrication machine via hole step S5 comprises the following steps:

s5.1, as shown in fig. 5 (2), firstly retracting the rear supporting leg 3, keeping other supporting legs fixed, moving the rear supporting leg 3 forward by a span distance, and supporting the rear supporting leg at the front end of the finished beam slab;

s5.2, retracting the front auxiliary supporting leg 6 and the rear auxiliary supporting leg 7, keeping other supporting legs still, erecting the front auxiliary supporting leg 6 to the ground in front of the 3# pile position to be constructed and fixing the front auxiliary supporting leg 6 to the finished beam plate after the main beam 1 moves forwards for a span distance, and erecting the rear auxiliary supporting leg 7;

s5.3, the pile foundation construction module 5 is folded, the pile foundation support leg 51 moves forwards for a certain span distance to be supported by a 3# pile foundation construction position to be constructed, and the pile foundation support leg is fixed on the ground through a second anchoring device 54;

s5.4, the field leveling module 4 is folded, the leveling support legs 42 move forwards for a span distance to complete the 2# pile foundation position supporting, and the ground is fixed on the ground through the first anchoring devices 44;

s5.5, the front supporting leg 2 is retracted, moves forwards by a span distance to the 1# bearing platform, is supported on the ground on the front side of the 1# bearing platform and is fixed through a third anchoring device at the lower part of the front supporting leg 2, and the hole passing is completed.

After the via hole of the bridge fabrication machine is completed, pile foundation construction can be carried out at the 3# pile position, pile foundation construction can be carried out at the 2# pile position, pile cap construction can be carried out, and construction of a pier, a cover beam and a beam plate can be carried out at the 1# pile cap;

at the moment, the 3# pile position carries out the construction of the pile foundation according to the pile foundation construction step S1, the 2# pile position carries out the construction operation of a bearing platform, and the 1# bearing platform carries out the construction of a pier, a cover beam and a beam slab;

in the step S2 of bearing platform construction, the bearing platform is constructed by adopting a cast-in-place method, and the method comprises the following steps:

s2.1, excavating a 2# bearing platform foundation pit by using the leveling equipment 43 of the field leveling module 4, and performing pile breaking operation of a 2# pile foundation in a matched manner;

s2.2, tamping the 2# bearing platform foundation through the leveling equipment 43;

s2.3, hoisting a template and binding steel bars for construction of the 2# bearing platform to a construction station of the 2# bearing platform from the tail part of the bridge fabrication machine along the main beam 1 by a second crown block and a third crown block of the crown block hoisting system 8, manually installing the template, and binding the steel bars;

and S2.4, transporting the concrete used for casting the 2# cushion cap to a beam slab at the rear end of the main beam 1 through a transport vehicle, hoisting the concrete to the 2# cushion cap by using a second crown block and a third crown block of the crown block hoisting system 8, and matching with manpower to carry out casting construction and carry out maintenance.

The construction method is characterized in that the construction method comprises the following steps of constructing the pier and the bent cap in the step S3 by adopting prefabricated assembly, and comprises the following steps:

s3.1, transporting the prefabricated pier stud and the bent cap to a beam slab at the rear end of the main beam 1 through a transport vehicle, hoisting the prefabricated 1# pier stud to a constructed 1# cushion cap from the rear end of the main beam 1 by using a first crown block and a second crown block of the crown block hoisting system 8, adjusting the interface of the 1# pier stud to be aligned with the 1# cushion cap by using a self-contained swing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly putting down the 1# pier stud to complete the installation of the 1# pier stud;

s3.2, connecting the 1# pier stud with the 1# bearing platform segment by using a grouting sleeve;

s3.3, after the strength of the grouting material between the section of the 1# pier stud and the section of the 1# bearing platform meets the design requirement, the installation of the 1# capping beam is carried out, and the operation process is the same as the lifting process of the 1# pier stud.

In the beam plate construction step S4, the beam plate is prefabricated and assembled, and the method comprises the following steps:

s4.1, after the strength of the No. 1 bent cap reaches the design requirement, transporting the precast beam plate to the beam plate at the rear end of the main beam 1 through a transport vehicle, hoisting the No. 1 beam plate by using a first crown block and a second crown block of the crown block hoisting system 8, advancing to the No. 1 bent cap along the main beam 1, and slowly lowering the No. 1 beam plate to a position 30-50cm away from a base stone support of the No. 1 bent cap;

and S4.2, driving the hoisting trolleys 83 of the first crown block and the second crown block to perform lateral movement adjustment, accurately positioning the 1# beam plate and the base stone support, slowly putting down the 1# beam plate, and completing erection of the 1# beam plate.

As shown in fig. 6 and 7, after the pile foundation construction step S1 at the 3# pile position, the bearing platform construction step S2 at the 2# pile position, the pier and capping construction step S3 at the 1# pile position, and the beam slab construction step S4 are completed, the through hole of the bridge fabrication machine is performed;

the bridge fabrication machine via hole step S5 comprises the following steps:

s5.1, as shown in fig. 7 (6) and 8 (7), firstly retracting the rear supporting leg 3, keeping other supporting legs fixed, moving the rear supporting leg 3 forwards by a span distance, and supporting the rear supporting leg at the front end of the finished 1# pile position beam plate;

s5.2, retracting the front auxiliary supporting leg 6 and the rear auxiliary supporting leg 7, keeping other supporting legs still, erecting the front auxiliary supporting leg 6 to the ground on the front side of the foremost pile position to be constructed and fixing the front auxiliary supporting leg 7 at the front end of the finished No. 1 beam plate after the main beam 1 moves forwards for a span distance;

s5.3, the pile foundation construction module 5 is folded, the pile foundation supporting leg 51 moves forwards for a span distance to the ground on the front side of the foremost pile position to be constructed, and the pile foundation supporting leg is fixed to the ground through a second anchoring device 54;

s5.4, the field leveling module 4 is folded, the leveling support legs 42 move forwards for a span distance until the 3# pile foundation position supporting is completed, and the leveling support legs are fixed on the ground through the first anchoring devices 44;

s5.5, the front supporting leg 2 is retracted, moves forwards by a span distance to the 2# bearing platform, is supported on the ground on the front side of the 2# bearing platform and is fixed through a third anchoring device at the lower part of the front supporting leg 2, and the hole passing is completed.

And S6, returning to the step S1 to prepare for the next cycle construction operation.

Example 2

In another embodiment of the present invention, the pile foundation constructing step S1 includes the steps of:

s1.5, through the transport vechicle with concrete transportation that the pouring pile foundation used extremely the beam slab department of 1 rear end of girder, reuse overhead traveling crane hoist system 8 No. two overhead traveling cranes and No. three overhead traveling cranes hoist the concrete to 2# pile foundation hole department, accomplish the pile foundation by artifical supplementary cooperation and pour to carry out the maintenance.

The construction of cushion cap adopts prefabricated construction of assembling, can improve the efficiency of construction, cushion cap adopts prefabricated construction of assembling in cushion cap construction step S2, includes following step:

s2.3, transporting a prefabricated 2# cushion cap to a beam slab at the rear end of the main beam 1 through a transport vehicle, using a first crown block and a second crown block of the crown block hoisting system 8 to hoist the 2# cushion cap to a 2# cushion cap construction position, aligning an interface of the 2# cushion cap with a 2# pile foundation by means of a self-provided swing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly lowering the 2# cushion cap to complete the installation of the 2# cushion cap;

and S2.4, manually carrying out wet connection on the joint of the 2# bearing platform and the 2# pile foundation by adopting cast-in-place high-performance concrete.

s3.1, transporting the prefabricated pier stud and the bent cap to a beam slab at the rear end of the main beam 1 through a transport vehicle, using a first crown block and a second crown block of the crown block hoisting system 8 to hoist the prefabricated 1# pier stud to a constructed 1# cushion cap from the rear end of the main beam 1, adjusting an interface of the 1# pier stud to be aligned with the 1# cushion cap by means of a self-provided swing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly putting down the 1# pier stud to complete the installation of the 1# pier stud;

s4.1, after the strength of the No. 1 capping beam reaches the design requirement, transporting the precast beam plate to a beam plate at the rear end of the main beam 1 through a transport vehicle, hoisting the No. 1 beam plate by using a first crown block and a second crown block of the crown block hoisting system 8, advancing to the No. 1 capping beam along the main beam 1, and slowly lowering the No. 1 beam plate to a position 30-50cm away from a base stone support of the No. 1 capping beam;

and S4.2, driving the hoisting trolleys 83 of the first crown block and the second crown block to perform transverse movement adjustment, accurately positioning the 1# beam plate and the pad stone support, slowly putting down the 1# beam plate, and completing erection of the 1# beam plate.

As shown in fig. 6 and 7, after the pile foundation construction step S1 at the 3# pile position, the bearing platform construction step S2 at the 2# pile position, the pier and cap beam construction step S3 at the 1# pile position, and the beam slab construction step S4 are completed, the through hole of the bridge fabrication machine is performed;

the bridge fabrication machine via hole step S5 comprises the following steps:

and S5.5, the front supporting legs 2 are retracted, move forwards by a span distance to the 2# cushion cap, are supported on the ground on the front side of the 2# cushion cap and are fixed through third anchoring devices at the lower parts of the front supporting legs 2, and the hole passing is completed.

The environmental protection measures adopted in the construction process of the pile-pier-beam integrated bridge fabrication machine comprise the following steps:

(1) The working environment is totally closed, and the enclosure is adopted for sealing and sound insulation;

(2) The sand stone material easy to generate dust raising is adopted to be washed by water, and the road dust raising in summer keeps frequent sprinkling operation of the sprinkling truck;

(3) And the waste slag, the waste material and the sewage generated in the construction are all conveyed to a sewage treatment module for treatment and are conveyed to a specified waste slag yard, and the waste slag is not stored in a construction site.

According to the construction method of the pile-pier-beam integrated bridge fabrication machine, when the site leveling module 4 and the pile foundation construction module 5 are used for constructing the front pile foundation and the bearing platform, the crown block hoisting system 8 can be used for carrying out beam slab erection operation on the beam span of which the rear side is subjected to the capping construction, the construction stages of each pile foundation, bearing platform, pier body, capping beam and beam slab all need certain maintenance time, the crown block hoisting system 8 cannot influence the use due to the overlapping of the construction time of each process, for example, after the bridge fabrication machine completes the via hole, when the construction of the front pile foundation is in the maintenance stage, the construction of the rear bearing platform, pier, capping beam and beam slab can be carried out, three crown blocks of the crown block hoisting system 8 cannot influence the construction progress due to the overlapping of the construction time among the processes, the simultaneous operation of the pile foundation, the bearing platform, the pier body and the capping beam of the three-span inner bridge can be realized, and the construction efficiency is high.

Compared with the traditional construction process, the bridge fabrication machine disclosed by the invention has the advantages that a construction access is not required to be arranged, the damage to the environment is small, the supporting foundation of equipment supporting legs is not required to be built, the bridge fabrication machine can be suitable for bridge construction in areas where the access environment cannot be built, mountain and forest areas with dangerous terrain, small curve radius (R <200 m), urban overpass construction with small floor space requirement and the like, the convenience and stability are realized, the working condition is wide, the related operating personnel can be reduced, the auxiliary construction of equipment such as excavators and loaders is not required, the equipment investment is reduced, the economy is good, and the construction cost is reduced.

The foregoing describes the technical principles of the present invention in conjunction with specific embodiments, which are provided for the purpose of illustrating the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.

Claims

1. The utility model provides a pier roof beam integration bridging machine which characterized in that includes: girder (1), can follow girder (1) both way movement is connected preceding landing leg (2), back landing leg (3), the place of girder (1) lower part level module (4), pile foundation construction module (5), preceding auxiliary leg (6), back auxiliary leg (7) and both way movement are connected overhead traveling crane hoist system (8) on girder (1) upper portion.

2. The pier-beam integrated bridge fabrication machine according to claim 1,

the main beam (1) spans a multi-span range, two adjacent spans are hinged, and bridge construction with the curvature radius R of a narrow space being less than 200m can be achieved.

3. The pier-beam integrated bridge fabrication machine according to claim 1,

the site leveling module (4) comprises: the device comprises a leveling leg (42), a first sliding device (41) arranged at the upper end of the leveling leg (42), a first anchoring device (44) arranged at the lower part of the leveling leg (42), and leveling equipment (43) arranged on one side of the lower part of the leveling leg (42);

the pile foundation construction module (5) comprises: pile foundation landing leg (51), set up second slider (52), the setting of pile foundation landing leg (51) upper end are in second anchor (54) of pile foundation landing leg (51) lower part set up pore-forming equipment (53) of pile foundation landing leg (51) lower part one side.

4. The pier-beam integrated bridge fabrication machine according to claim 3,

the front supporting leg (2), the rear supporting leg (3), the leveling supporting leg (42), the pile foundation supporting leg (51), the front auxiliary supporting leg (6) and the rear auxiliary supporting leg (7) are all telescopic supporting legs;

and the lower ends of the front supporting leg (2) and the front auxiliary supporting leg (6) are provided with third anchoring devices.

5. The pier-beam integrated bridge fabrication machine according to claim 4, wherein the first anchoring device (44), the second anchoring device (54) and the third anchoring device are identical in structure and comprise supporting plates fixedly connected with the lower portions of the corresponding supporting legs, and a plurality of ground grabbing nails are arranged on the bottom surfaces of the supporting plates.

6. The pier-beam integrated bridge fabrication machine according to claim 1,

the overhead crane hoisting system (8) comprises three overhead cranes, a first overhead crane, a second overhead crane and a third overhead crane which are respectively arranged from the rear end to the front end of the main beam (1), and the three overhead cranes can be supported on the upper part of the main beam (1) in a bidirectional moving manner;

the three overhead traveling cranes all include: the connecting rod mechanism comprises a cross beam (81) and two connecting rods arranged at two ends of the cross beam (81), wherein the two connecting rods are perpendicular to the cross beam (81) and are positioned on the same side of the cross beam (81);

the lower end of each connecting rod is provided with a pulley (82), and the lower part of the cross beam (81) is provided with a hoisting trolley (83) which can move along the axial direction of the cross beam (81) in two directions.

7. The pier-beam integrated bridge fabrication machine according to claim 6,

each crown block of the crown block hoisting system (8) is provided with a swing mechanism and an angle adjusting oil cylinder for adjusting the angle of hoisting objects at the lower part of the hoisting trolley (83).

8. A construction method using the pier-beam integrated bridge fabrication machine according to any one of claims 1 to 7, wherein: the method comprises the following steps:

s1, pile foundation construction: the site leveling module (4) performs site leveling on a pile site to be constructed, the pile foundation construction module (5) performs pile foundation hole drilling construction, and the crown block hoisting system (8) hoists a reinforcement cage to enter a pile foundation hole and pours pile foundation concrete;

s2, bearing platform construction: the crown block hoisting system (8) hoists the bearing platform template and the bound reinforcing steel bars to a bearing platform construction station, completes the installation and the binding of the bearing platform template, and then carries out the pouring of the bearing platform;

s3, construction of the bridge pier and the bent cap: the crane hoisting system (8) hoists the prefabricated piers and the capping beams to a bearing platform where the front supporting legs (2) are located, and the construction of the piers and the capping beams is carried out;

s4, beam and slab construction: the overhead travelling crane hoisting system (8) hoists the precast beam plate to the capping beam position to complete beam plate erection;

s5, bridge fabrication machine via hole: the main beam (1) moves forwards for a span, so that the front supporting leg (2) is supported at a bearing platform at the forefront, and the front auxiliary supporting leg (6) is supported on the ground in front of a pile position to be constructed;

9. The pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein before the step S1, a step of assembling a bridge fabrication machine is performed:

firstly, at least 3 bearing platforms, 2 pier bodies and the erection of a first section beam are completed on site;

a1, supporting a site leveling module (4) at a most front bearing platform, supporting a front support leg (2) on the ground of a pier at a span distance behind the site leveling module (4), supporting a rear support leg (3) on a beam plate at a span distance behind the front support leg (2), and supporting a pile foundation construction module (5) at a pile position to be constructed;

a2, a first section of main beam is hung between the front supporting leg (2) and the rear supporting leg (3);

a3, a second section of main beam is hung between the front supporting leg (2) and the site leveling module (4);

a4, a third section of main beam is hoisted between the site leveling module (4) and the pile foundation construction module (5);

a5, three main beams are hinged together, the front auxiliary supporting leg (6) is installed at the foremost end of the main beam (1) and supported on the ground, and the rear auxiliary supporting leg (7) is installed at the rearmost end of the main beam (1) and supported on an erected beam plate;

and A6, installing the crown block hoisting system (8) and the hoisting sewage treatment module (9) to the first section beam to finish the assembly of the starting position of the bridge fabrication machine.

10. The pile-pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the step S1 comprises the steps of:

s1.1, moving the pile foundation construction module (5) to the front of a pile position to be constructed for temporary support, moving the site leveling module (4) to the pile position to be constructed for self-anchoring, leveling the construction ground after the support is stable, returning to the previous station after the completion to start bearing platform construction operation, and performing support operation if the bearing platform is in existence;

s1.2, after the central point of the pile position is released, the pile foundation construction module (5) is moved to a pile foundation construction position, and corresponding pile foundation drilling slag treatment equipment is arranged to a construction station by a second crown block and a third crown block of the crown block hoisting system (8);

s1.3, adjusting the position of the pile foundation construction module (5) to carry out self-anchoring, and starting drilling construction;

11. The pile-pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the bearing platform in the step S2 is constructed by a cast-in-place method, and the method comprises the following steps:

s2.1, excavating a bearing platform foundation pit by the site leveling module (4), and performing pile breaking operation of a pile foundation in a matched manner;

s2.2, tamping a bearing platform foundation;

s2.3, hoisting a bearing platform template and binding steel bars to a bearing platform construction position from the tail part of the bridge fabrication machine by a second crown block and a third crown block of the crown block hoisting system (8), installing the template and binding the steel bars;

12. The pile-pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the bearing platform in the step S2 is prefabricated and assembled, and the method comprises the following steps:

s2.2, tamping a bearing platform foundation;

s2.3, hoisting the prefabricated bearing platform to a construction station by a first crown block and a second crown block of the crown block hoisting system (8), aligning an interface of the prefabricated bearing platform with the pile by the aid of a self-provided swing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly lowering the prefabricated bearing platform to complete installation of the bearing platform;

13. The pile-pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the pier and the capping beam in the step S3 are constructed by adopting prefabricated assembly, and the method comprises the following steps:

s3.1, hoisting the prefabricated pier stud to a constructed bearing platform by a first crown block and a second crown block of the crown block hoisting system (8) through the tail part of the main beam (1), adjusting the interface of the pier stud to be aligned with the bearing platform by a self-provided swing mechanism and an angle adjusting oil cylinder of the first crown block and the second crown block, and slowly lowering the pier stud to complete the installation of the pier stud;

s3.2, connecting the pier stud with the bearing platform segment by using a grouting sleeve;

14. The pile-pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the beam plate in the step S4 is prefabricated and assembled, and the method comprises the following steps:

s4.1, after the strength of the cover beam meets the design requirement, hoisting the precast beam plate by a first crown block and a second crown block of the crown block hoisting system (8), advancing to the cover beam along the main beam (1), and slowly lowering the precast beam plate to a position 30-50cm away from the base stone support;

and S4.2, driving the first crown block and the second crown block to move transversely and adjust so as to accurately position the beam plate and the base stone support, and slowly putting down the prefabricated beam plate to complete beam plate erection.

15. The pier-beam integrated bridge fabrication machine construction method according to claim 8, wherein the step S5 comprises the steps of:

s5.1, retracting the rear supporting leg (3), keeping the other supporting legs still, moving the rear supporting leg (3) forward by a span distance, and supporting the rear supporting leg (3);

s5.2, retracting the front auxiliary supporting leg (6) and the rear auxiliary supporting leg (7), keeping the other supporting legs still, moving the main beam (1) forward by a span distance, and supporting the front auxiliary supporting leg (6) and the rear auxiliary supporting leg (7);

s5.3, the pile foundation construction module (5) is folded, moved forward by a span distance to the next pile foundation construction station and supported on the ground;

s5.4, retracting the field leveling module (4), moving forward a span distance to the next bearing platform construction station, and supporting on the ground;

s5.5, the front supporting leg (2) is folded, and the front supporting leg moves forwards by a span distance to the next constructed bearing platform and is supported on the ground on the front side of the bearing platform to complete hole passing.