CN112211213A

CN112211213A - Foundation of beam body precast yard and processing method thereof

Info

Publication number: CN112211213A
Application number: CN202011206046.0A
Authority: CN
Inventors: 崔瑞峰; 尹宗林; 陈森文; 梁浩; 杨苓; 陈玉良; 聂启波; 罗红波; 肖金; 唐嘉贤
Original assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-01-12

Abstract

The application provides a basis of beam body precast yard, beam body precast yard includes system beam district, sideslip district, stretch-draw district and deposits the roof beam district, the basis of system beam district, sideslip district and stretch-draw district all includes along the automatic mould platform basis and the automatic mould platform backfill basis of extending along the bridge direction, the automatic mould platform backfill basis is located the below on automatic mould platform basis, the basis of system beam district and stretch-draw district still is provided with the reinforcing pile; deposit the roof beam district and include along depositing the beam platform seat and depositing the beam platform seat backfill foundation of following the bridge to extension, it is provided with the reinforcing pile to deposit beam district foundation correspondence. This application makes the bearing capacity of roof beam body precast yard can satisfy in the construction demand of roof beam body, adopts the reinforced pile to consolidate the basis simultaneously, has added the efficiency of basic processing, improves the bearing capacity that the precast yard is located soft base department, and the uneven settlement of reducible ground is out of shape and is influenced the prefabrication quality of the roof beam body, improves the yield of the precast roof beam body.

Description

Foundation of beam body precast yard and processing method thereof

Technical Field

The application relates to the technical field of bridge engineering, in particular to a foundation of a beam body precast yard and a processing method thereof.

Background

With the continuous development of social economy, the construction of bridge engineering is also rapidly developed. The superstructure of bridge engineering adopts precast beam more, and the good or bad of precast beam construction directly influences whether whole bridge engineering construction reaches standard. As an important component of precast beam construction, a precast beam field carries a precast beam construction task of a whole engineering project, which is the central importance of engineering construction, not only restricts the project construction period, but also concerns the overall construction quality of all highway bridge projects, so the planning and construction of the precast beam field should be carefully organized and arranged at the initial stage of the engineering project.

The precast beam field is normally located at a soft soil place, the porosity is large, the water content is high, the water permeability coefficient is small, the self-standing property is poor, a closed dry hard layer is formed after the surface layer is exposed to the sun, the pore water of the lower soil layer is not easy to evaporate, the natural consolidation settlement is serious in surface observation, and the foundation does not have enough bearing capacity to meet the construction requirement of the beam field.

Disclosure of Invention

The main object of the present application is to provide a foundation for a beam body precast yard with good load bearing capacity.

Another object of the present application is to provide a method of treating a foundation of a precast yard of the above-mentioned beam body.

In order to achieve the above object, the present application provides the following technical solutions:

as a first aspect, the present application provides a foundation of a beam body precast yard, the beam body precast yard includes a beam making area, a traverse area, a tension area and a beam storage area, the foundations of the beam making area, the traverse area and the tension area all include an automatic formwork base and an automatic formwork backfill base extending along a bridge direction, the automatic formwork backfill base is located below the automatic formwork base, and reinforcing piles are further arranged on the foundations of the beam making area and the tension area;

deposit the roof beam district and include along depositing the beam platform seat and depositing the beam platform seat backfill foundation of following the bridge to extension, it is provided with the reinforcing pile to deposit beam district foundation correspondence.

Further setting: the automatic mould platform foundation is of a reinforced concrete structure and comprises at least two layers of reinforcement layers and stirrups hooped on the reinforcement layers, and the reinforcement layers and the stirrups all adopt reinforced concrete structures

The reinforcing steel bar of (1).

Further setting: the automatic mold table backfill foundation is a brick slag backfill structure.

Further setting: the two ends of the foundation of the tensioning area are provided with reinforced treatment parts, the depth of the foundation pit excavated by the reinforced treatment parts is greater than that of the foundation pits of other parts, and the thickness of the automatic mould platform foundation of the tensioning area foundation located at the reinforced treatment parts is greater than that of the other parts of the automatic mould platform foundation.

Further setting: the reinforcing piles in the beam making area and the tensioning area comprise concrete square piles, and the reinforcing piles in the beam storage area comprise pine piles.

Further setting: deposit the beam platform seat and include C30 integral concrete bar shape base, deposit the beam platform and backfill the basis and be located deposit beam platform seat below.

Further setting: two adjacent deposit and have laid the stone chip layer between the roof beam platform seat, just the stone chip layer sets up 2 ~ 3% slope.

Further setting: and the base top surface of the transverse moving area is lower than the base top surfaces of the beam making area and the tensioning area.

Further setting: the foundation bearing of the beam body precast field is larger than a preset value, and the preset value is 200 KPa.

As a second aspect, the present application relates to a method for processing a foundation of a beam body precast yard, comprising the steps of:

excavating a foundation pit of the pedestal according to the basic contour line and the leveling point of the measurement lofting;

detecting the bearing capacity of the foundation, and reinforcing the foundation when the bearing capacity of the foundation is smaller than a preset value;

lowering the prefabricated reinforcement framework into the foundation pit;

pouring concrete, inserting a vibrating rod to vibrate and compact, covering in time after pouring, and watering and maintaining.

Further setting: the construction foundation is reinforced by adopting one of the following modes, so that the bearing capacity of the foundation reaches a preset value:

replacing and reinforcing coarse soil or slag;

and adopting the pile to reinforce the foundation.

Compared with the prior art, the scheme of the application has the following advantages:

1. in the basis of the beam body prefabrication field of this application, the basis of system beam district, sideslip district and stretch-draw district all includes automatic mould platform basis and automatic mould platform backfill basis for the bearing capacity in beam body prefabrication field can satisfy in the construction demand of beam body, adopt the reinforcing pile to consolidate the basis simultaneously, the efficiency of basic processing has been added, improve the bearing capacity that the prefabrication field is located soft base department, the differential settlement of reducible ground warp and influence the prefabrication quality of beam body, improve the yield of the precast beam body.

2. In the foundation of the beam body precast yard, the reinforcing treatment is carried out on the die table foundations at the two ends of the tensioning area, so that the method is suitable for the beam body to apply prestress on the tensioning area and the pressure on the rear end part foundation of the beam body, the stability and the bearing capacity of the die table foundation of the tensioning area are improved, and the stability of the beam body in the tensioning process is ensured.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic plan view of one embodiment of a beam precast yard according to the present application;

FIG. 2 is a cross-sectional view of a beam-making area foundation arrangement of the beam body precast yard of the present application;

FIG. 3 is a cross-sectional view of a foundation arrangement of a transverse shifting area of a beam body precast yard according to the present application;

FIG. 4 is a top view of a trolley for a beam body yard according to the present application;

FIG. 5 is a cross-sectional view of a foundation arrangement of a maintenance area of a beam body precast yard according to the present application;

FIG. 6 is a cross section of a base layout of a tensioning area of a beam body precast yard according to the present application;

FIG. 7 is a top view of the layout of the tension zone foundations of the precast beam yard of the present application;

FIG. 8 is a reinforcement diagram of an automatic mold base of a beam precast yard according to the present application;

FIG. 9 is a cross-sectional view of a reinforced foundation treatment of a tension zone of a precast beam yard according to the present application;

FIG. 10 is a reinforcement diagram of a reinforcement foundation of a tension area of a precast beam yard according to the present application;

FIG. 11 is a schematic structural view of a crane of the beam prefabrication yard of the present application;

FIG. 12 is a cross-sectional view of a crane rail foundation arrangement of the beam precast yard of the present application;

FIG. 13 is a cross-sectional view of a beam storage pedestal and a foundation arrangement of a beam storage area of the beam body precast yard according to the present application;

fig. 14 is a reinforcement diagram of a beam storage pedestal of a beam storage area of the beam body prefabricating field.

In the figure, 1, a beam making area; 11. a die assembly pouring area; 111. a track pit; 121. a bottom formwork reinforcing steel bar processing area; 122. a top formwork reinforcing steel bar processing area; 13. a raw material storage area; 14. a reinforcing steel bar processing area; 15. a semi-finished product stacking area; 2. a traversing zone; 21. traversing the track; 22. transversely moving the trolley; 231. an automatic wheel set; 2311. a driving wheel; 2312. a motor; 232. a driven wheel set; 3. a maintenance area; 4. a tensioning zone; 5. a beam storage area; 51. a beam storage pedestal; 52. backfilling the foundation of the beam storage platform seat; 6. automatically driving the die table; 7. hoisting a machine; 71. a hoisting system; 72. a crown block; 73. a cross beam; 74. a vertical support leg; 75. a bottom traveling mechanism; 76. a traveling rail; 761. a gantry crane foundation; 762. backfilling a foundation with a gantry crane rail; 1001. an automatic mold base; 10011. a reinforcement layer; 10012. hooping; 1002. and backfilling the foundation by the automatic mold table.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Please refer to fig. 1 to 14, the application relates to a beam body precast yard, which comprises a beam making area 1, a transverse moving area 2, a maintenance area 3, a tensioning area 4, a beam storage area 5 and an automatic driving module 6, wherein the beam body precast yard is divided into areas and matched with the automatic driving module 6 which is circulated in each area to form intelligent factory assembly line precast beam body construction, so that the problems of construction disorder and long construction period caused by the fact that the existing precast beam yard is not divided in a planning way are solved, and the construction efficiency is high.

Specifically, tracks (not shown in the figures and the same below) for automatically driving the die table 6 to move are arranged in the beam forming area 1, the maintenance area 3 and the tensioning area 4, and the tracks of the beam forming area 1, the maintenance area 3 and the tensioning area 4 extend along the bridge direction. Sideslip district 2 is located between system roof beam district 1, maintenance district 3 and the stretch-draw district 4, specifically, system roof beam district 1 with stretch-draw district 4 is located the same one side of sideslip district 2, maintenance district 3 is located the opposite side of sideslip district 2, just be equipped with at least one sideslip dolly (not shown meaning, the same down) in the sideslip district 2, through the sideslip dolly can be realized automatic drive mould platform 6 is in turnover between system roof beam district 1, maintenance district 3 and the stretch-draw district 4. The automatic driving die table 6 can be transported by the traverse carriage in the traverse area 2 according to the production process of the beam body, and the specific transportation route is beam making area 1 → traverse area 2 → maintenance area 3 → traverse area 2 → tension area 4 → traverse area 2 → beam making area 1, thereby forming the flow line construction operation.

Firstly, the automatic driving die table 6 is arranged on the track of the beam making area 1 to make and process a beam body. The beam making area 1 comprises a mould processing area and a mould closing pouring area 11, the mould processing area is located on one side, away from the transverse moving area 2, of the mould closing pouring area 11, and the mould processing area is used for binding reinforcing steel bars to form mould reinforcing steel bars. The track of the beam forming area 1 is arranged in the die assembly pouring area 11, the automatic driving die table 6 is arranged in the die assembly pouring area 11, and the automatic driving die table 6 can slide away from and enter the die assembly pouring area 11 along the track. In addition, hydraulic side mold plates (not shown, the same applies hereinafter) that can move toward the automatic driving mold table 6 are provided on both sides of the rail in the mold closing and casting area 11. And a crane 7 capable of moving back and forth between the mould processing area and the die assembly pouring area 11 is further arranged in the beam making area 1, so that the mould reinforcing steel bars bound and formed in the mould processing area can be hoisted to the automatic driving mould table 6 through the crane 7, and the mould reinforcing steel bars and the hydraulic side mould plates on two sides are assembled to form an outer mould plate of a beam body, so that subsequent concrete pouring is facilitated.

Further, the mould processing district includes die block board steel bar processing district 121 and top form board steel bar processing district 122, die block board steel bar processing district 121 with top form board steel bar processing district 122 sets up side by side along the bridge direction, all correspond in die block board steel bar processing district 121 and the top form board steel bar processing district 122 and be equipped with the ligature pedestal to workman's ligature operation is convenient for. Then when the production roof beam body, the accessible hoist 7 will be earlier followed the fashioned bottom form reinforcing bar of ligature hoist in the bottom form reinforcing bar processing district 121 hoist extremely on the automatic drive die table 6, drive afterwards hydraulic side form is close to the bottom form reinforcing bar and fixed, the rethread hoist 7 will the top form reinforcing bar hoist that top form reinforcing bar processing district 122 ligature is arrived in order to assemble on the hydraulic side form.

And a raw material storage area 13, a steel bar processing area 14 and a semi-finished product stacking area 15 are arranged on one side of the mould processing area, which is far away from the mould closing and pouring area 11, the raw material storage area 13, the steel bar processing area 14 and the semi-finished product stacking area 15 are sequentially arranged in the direction from the direction far away from the mould processing area to the direction close to the mould processing area, and corresponding processing equipment such as a numerical control hoop bending machine, a numerical control cutting machine, a straightening machine and the like is arranged in each area according to requirements. Still be equipped with intelligent machine conveyer in the system roof beam district 1 for reinforcing bar accessible transmission band is transported in order to stack and ligature between reinforcing bar processing district 14, semi-manufactured goods stack district 15 and the mould processing district, forms pipelined construction.

In addition, referring to fig. 11, the crane 7 adopted in this embodiment is a gantry crane, which includes a hoisting system 71, a crown block 72, a cross beam 73, vertical support legs 74, a bottom traveling mechanism 75, and a traveling rail 76, the traveling rail 76 of the crane 7 in the beam-making area 1 is respectively disposed on two sides of the beam-making area 1 along the bridge direction, the vertical support legs 74 are provided with two rails respectively corresponding to two sides of the beam-making area 1, the cross beam 73 is disposed on top of the two vertical support legs 74, the hoisting system 71 is disposed on the crown block 72, the crown block 72 can move on the cross beam 73 along the length direction thereof, the cross beam 73 extends from the bottom formwork reinforcement processing area 231 to the top formwork reinforcement processing area 232, the bottom traveling mechanism 75 is disposed at the bottom of the vertical support legs 74, and the bottom traveling mechanism 75 is matched with the traveling rail 76, the running rails 76 extend from the mold machining area to the mold clamping and casting area 11. Therefore, when different templates in the mould processing area are hoisted, the crown block 72 can move to the position above the bottom template steel bar processing area 121 or the top template steel bar processing area 122 along the cross beam 73, the mould steel bars at different positions are hoisted according to the binding sequence of the beam body templates, then the bottom traveling mechanisms 75 at the bottoms of the vertical supporting legs 74 move along the traveling rails 76, and the bound mould steel bars are hoisted into the die assembly pouring area 11 to assemble the beam body templates.

And (3) carrying out concrete pouring on the assembled and bound tire form reinforcing steel bars, carrying out geotextile covering and manual watering maintenance after the pouring is finished, and removing the hydraulic side template, the inner mold and the end part after the beam body reaches the strength, so that the automatic driving mold table 6 drives the formed beam body to move to the transverse moving area 2.

In addition, the automatic driving mold table 6 is reversely provided so that the beam body can preset the reverse arch according to the design and transition according to the quadratic parabola, and the reverse arch is provided in consideration of the construction experience, the prestress application time, the influence of the shrinkage creep and the time of the late steady load arching, and specifically, the automatic driving mold table 6 extends to both sides thereof according to the quadratic parabola.

Referring to fig. 3 and 4, a traverse rail 21 extending along a transverse bridge direction is disposed in the traverse area 2, the traverse rail 21 is perpendicular to the rails of the girder manufacturing area 1, the maintenance area 3, and the tensioning area 4, a driving mechanism matched with the traverse rail 21 is disposed at the bottom of the traverse trolley 22, the driving mechanism includes an automatic wheel set 231 and a driven wheel set 232, the automatic wheel set 231 includes a driving wheel 2311 rotatably disposed at the bottom of the traverse trolley 22 and a motor 2312 for driving the driving wheel 2311 to rotate, and the two automatic wheel sets 231 of this embodiment are preferably two sets, the two automatic wheel sets 231 are respectively disposed at two ends of the traverse trolley 22 along the transverse bridge direction, and the driven wheel set 232 is disposed at an 1/2 plane of the traverse trolley 22. Therefore, the driving wheel 2311 is driven to rotate by the motor 2312, so that the purpose that the traverse trolley 22 moves back and forth between the beam making area 1, the maintenance area 3 and the tensioning area 4 along the traverse rail 21 is achieved.

Be equipped with on the sideslip dolly 22 and supply automatic drive mould platform 6 gets into track on the sideslip dolly 22, the track is along extending along the bridge direction, just the track of sideslip dolly 22 with the track parallel and level of system roof beam district 1, maintenance district 3 and stretch-draw district 4 to butt joint between the track in each region. And the driving mechanism of the traverse carriage 22 is connected with an infrared control system, so that the traverse carriage 22 can accurately and correspondingly move to the beam making area 1, the maintenance area 3 and the tensioning area 4, and the tracks of the traverse carriage can be accurately butted with the tracks in each area, so that the automatic driving mould table 6 can realize the area conversion between the traverse area 2 and the beam making area 1, the maintenance area 3 and the tensioning area 4.

Preferably, two traverse carriages 22 are arranged side by side along the transverse bridge direction in the embodiment, and the tracks of the two traverse carriages 22 are butted with each other, and the total length of the tracks is matched with the length of the traverse area 2 along the longitudinal bridge direction, so that the automatic driving mould table 6 can be smoothly circulated in each area of the beam body prefabrication yard. It should be noted that the number of the traverse cars 22 in the traverse area 2 is not limited to two in the present application, and different numbers of the traverse cars 22 may be selected according to the actual construction and site requirements, but it is necessary to ensure that the total track length of all the traverse cars 22 matches the length of the traverse area 2 in the longitudinal bridge direction.

Referring to fig. 5, the automatic driving mold table 6 and the finished beam move to the curing area 3 along with the traverse trolley 22 for curing, and the automatic driving mold table 6 enters the track of the curing area 3 from the track of the traverse trolley 22. The maintenance area 3 is provided with a sealed maintenance shed (shown in the figure, the same below) and a standard maintenance room temperature and humidity automatic control instrument, the sealed maintenance shed is made of materials with good sealing performance so as to ensure the sealing performance of the beam body during maintenance, and one end of the maintenance shed, which is close to the transverse moving area 2, is provided with a sealed electric roller shutter (shown in the figure, the same below) for entering and exiting. Maintenance district 3 adopts the maintenance of standard room temperature and humidity automatic control appearance to carry out the roof beam body, and its accessible is gathered temperature, humidity and the roof beam body self condition in the canopy and is carried out reasonable effectual adjustment to the roof beam body maintenance environment, but real time monitoring guarantees the quality of roof beam body maintenance. The application range of the standard-maintenance room temperature and humidity automatic control instrument is 15m²To 25m²The arrangement number of the standard curing room temperature and humidity automatic control instruments on the construction site can be selected according to the application effect。

And after the beam body in the maintenance area 3 reaches the maintenance age, the finished beam body returns to the traverse area 2 by using the automatic driving mould table 6, and is conveyed to the tensioning area 4 by the traverse trolley 22 for tensioning and grouting.

Please refer to fig. 13, the finished girder after the tension grouting can be hoisted to the girder storage area 5 by using a crane 7 for storage, the girder storage area 5 is provided with a plurality of girder storage pedestals 51 arranged side by side and extending along the longitudinal bridge direction, the girder storage area 5 further adopts an intelligent finished product storage system, and the intelligent finished product storage system can analyze the storage position, the finished product physical parameters, the finished product corresponding erection position and the like of the finished girder according to the girder transportation erection plan and the prefabrication plan, so as to realize the digital yard, the optimal storage of the finished product and the efficient circulation. Still be equipped with the inspection pedestal in the beam storage district 5, the platform body brush of inspection pedestal is the alternate paint of yellow black.

And after the finished beam body is tensioned and grouted, hoisting the finished beam body to the beam storage area 5, wherein the automatic driving die table 6 is vacant, and the vacant automatic driving die table 6 returns to the beam making area 1 through the transverse moving area 2 to perform production and preparation of a new round of beam body.

The beam body precast yard still is equipped with water supply system (not shown in the figure, lower with) and drainage system (not shown in the figure, lower with), water supply system include the well and with the water pipe of well intercommunication, the water pipe accesss to system roof beam district 1, stretch-draw district 4 and maintenance district 3. The drainage system comprises a longitudinal drainage part and a transverse drainage part, wherein the longitudinal drainage part comprises an outer drainage ditch and a main drainage ditch which are arranged along the bridge direction, the outer drainage ditch is arranged at the periphery of the beam body prefabricated field, the main drainage ditch is arranged in the beam body prefabricated field and extends along the longitudinal direction, and meanwhile, ditches arranged along the bridge direction are also arranged on the two sides of a passageway for workers to walk in the field, and cover plates are laid on the ditches. The lateral drainage part comprises a lateral drainage ditch arranged between the mould platform foundations of two adjacent beam making areas along the lateral bridge direction, a lateral drainage ditch is also arranged between the beam making area 1 and the beam storage area 5, and the lateral drainage ditch can introduce water into a main drainage ditch by embedding a PVC pipe at the track foundation of the crane 7. The horizontal water discharging part further comprises a sedimentation tank, a water outlet of the main water discharging ditch is communicated with the sedimentation tank, and the bottom of the main water discharging ditch faces towards the sedimentation tank and is provided with a downward slope. Preferably, the sedimentation tank in the embodiment is a three-stage sedimentation tank, C20 concrete is poured, and the water treated in the sedimentation tank can be recycled and guided into an effluent system for cleaning a field and the like. In addition, the sedimentation tank base is required to be compacted, the compaction degree is not less than 90%, if the address condition of the base is poor, the filling and replacement treatment is required, and the thickness is not less than 30cm and the base is tamped.

The drainage system also comprises a water collecting well which is arranged in the transverse moving area 2 and communicated with the outer drainage ditch, and accumulated water in the transverse moving area 2 can be reduced by the facility of the water collecting well due to the lower terrain of the transverse moving area 2.

In addition, please refer to fig. 2 to 14, the present application also relates to the ground foundation of the beam body prefabrication yard, the foundations of the mold closing and pouring area 11, the traversing area 2, the maintenance area 3 and the tensioning area 4 of the beam making area 1 all include an automatic mold platform foundation 1001, an automatic mold platform backfill foundation 1002 is arranged below the automatic mold platform foundation 1001, and a plurality of reinforcing piles (not shown, the same below) are arranged along the track direction of each area. The tracks of the die assembly pouring area 11, the transverse moving area 2, the maintenance area 3 and the tensioning area 4 are respectively arranged on the corresponding automatic die table foundation 1001, and the track elevations of all the areas are equal.

Wherein, the die assembly is pour district 11, maintenance district 3 and stretch-draw district 4's basic surface elevation equals, and the basic top surface in sideslip district 2 is less than the die assembly is pour the basic top surface in district 11, maintenance district 3 and stretch-draw district 4, in order to guarantee sideslip dolly 22 has sufficient walking space, specifically is in sideslip district 2 excavates downwards and predetermines the degree of depth, and the preferred track elevation below 1.5m of sideslip dolly 22 of this predetermined degree of depth. Meanwhile, the sunken areas of the transverse moving areas 2 are further provided with safety guard rails (shown in the figure, the same below) along the short edges at two sides of the longitudinal bridge direction, the height of each safety guard rail in the embodiment is preferably 1.2m, each safety guard rail comprises a guard rail vertical rod and a cross rod, the distance between every two adjacent vertical rods is 1m, an upper cross rod and a lower cross rod are arranged between every two adjacent vertical rods, and the distance between every two cross rods is 0.6 m.

Preferably, automatic mould platform basis 1001 is equipped with at least two-layer arrangement of reinforcement layer 10011 that sets up from top to bottom, and adjacent two-layer arrangement of reinforcement layer 10011 is connected through stirrup 10012 to can constitute automatic mould platform basis 1001's steel reinforcement skeleton, and arrangement of reinforcement layer 10011 and stirrup 10012 in this embodiment all adopt

The reinforcing steel bar of (1).

Taking the mold closing and pouring area 11 of the beam forming area 1 as an example, the method for processing the mold platform foundation comprises the following steps:

(1) and on a leveled field, determining an excavation line and an excavation depth of the mold platform foundation according to the basic contour line and the level point of the measurement lofting, and specifically adopting a manual matching machine to excavate.

(2) After the foundation is excavated to the designed depth, bearing capacity detection is carried out on the foundation, and when the bearing capacity of the foundation cannot reach a preset value, reinforcement treatment needs to be carried out on the foundation.

Specifically, the construction foundation may be reinforced by one of the following methods, so that the magnitude of the bearing capacity of the foundation reaches a preset value, where the preset value of the foundation is 200KPa in this embodiment.

When the foundation has a soft foundation with a small range and a shallow depth, coarse soil or slag can be adopted for replacement and filling, and after the replacement and filling reach the compactness, the mold platform foundation is directly constructed.

When the foundation has a soft foundation with a large soft foundation range, the foundation can be reinforced by inserting and driving reinforcing piles, the number of the reinforcing piles is set according to the number of tracks arranged on the foundation, the distance between every two adjacent reinforcing piles is 100cm, the reinforcing piles are preferably square concrete piles with the side length of 15cm and the length of 400cm, and the arrangement mode is that the tracks are vertically arranged below the reinforcing piles at the left-right cross interval of 100 cm.

Furthermore, the reinforcing piles in the beam making area adopt concrete square piles.

In a similar way, because the transverse moving area 2, the maintenance area 3 and the tensioning area 4 all need to carry out rail transportation and automatic driving of the mould table 6 and the beam body, the foundations of the three areas also need to be reinforced by inserting and beating concrete square piles.

(3) Under the condition that the bearing capacity of the foundation is ensured to reach a preset value, firstly, brick slag is backfilled in the foundation pit to form an automatic mold table backfilling foundation 1002, and then, the lower portion of a steel reinforcement framework of the prefabricated automatic driving mold table 6 is placed on the automatic mold table backfilling foundation 1002 in the foundation pit.

Preferably, the steel reinforcement framework in this embodiment includes an upper reinforcement layer 10011 and a lower reinforcement layer 10011 and a stirrup 10012 hooped on the two reinforcement layers 10011, and the thickness of the automatic mold table foundation 1001 formed by concrete pouring is 50mm, and the thickness of the automatic mold table backfill foundation 1002 is the same as the thickness of the automatic mold table foundation 1001.

(4) Concrete is poured, C30 concrete is particularly adopted for pouring, an insertion type vibrating rod is adopted for vibrating the concrete to be compact in the pouring process, an upper layer pedestal line can be popped out on a lower layer plane, and the minimum height of the top surface of the mold base from a field is guaranteed to be 25cm as a base line.

After concrete pouring is finished, the foundation needs to be covered in time, and a specially-assigned person is sent to spray water to preserve health for no less than 7 days.

Meanwhile, a track pit 111 extending along the longitudinal bridge direction is formed on the die platform foundation and the foundation ground, and a track is located in the track pit 111, so that the height of the automatic driving die platform 6 can be reduced, and the position of a steel bar formwork structure on the automatic driving die platform is matched with the hydraulic side formworks on two sides.

The above treatment method is also applicable to the foundation construction of the traverse area 2, the maintenance area 3 and the tension area 4, but in particular, in consideration of the problems that the beam body is prestressed when the tension area 4 is subjected to tension grouting, and the foundation at the rear end part is stressed, the foundation reinforced concrete reinforcement treatment can be arranged at the two end parts of the formwork foundation of the tension area 4. Specifically, in order to ensure that the elevations of the top surface of the foundation of the tension area 4 are consistent, the excavation depth of the foundation pit needs to be deepened at the position corresponding to the reinforcement treatment. And then, brick slag backfilling is carried out in the foundation pit to form an automatic mould platform backfilling foundation 1002, the construction steps are consistent with the construction of the foundation of the beam making area 1, but it is noted that the steel reinforcement framework of the automatic mould platform foundation 1001 reinforced by the tensioning area 4 comprises three layers of reinforcement distribution layers 10011, and the steel reinforcement framework can form the automatic mould platform foundation 1001 with the thickness of 100cm after concrete pouring, so that the bearing capacity of the end part of the tensioning area 4 is improved.

Specifically, four reinforcing treatment parts are arranged on the same die table foundation along the bridge direction, one of the reinforcing treatment parts is positioned at the end part of the tensioning area 4 close to the maintenance area 3, and the other three reinforcing treatment parts are sequentially arranged at one end of the die table foundation close to the transverse moving area 2, so that three groups of beam bodies with different lengths can be tensioned correspondingly.

For convenience of construction, concrete pouring of reinforcement treatment of the automatic mold table foundation 1001 located at the same position of different mold table foundations in the transverse bridge direction can be performed synchronously, specifically, pouring of reinforcement treatment portions is completed in the transverse bridge direction, the rest portions of the automatic mold table foundation 1001 are poured before concrete is hardened, and at the moment, adjacent mold table foundations are connected through concrete so as to further enhance the load capacity of the mold table foundation.

In addition, please refer to fig. 11 and 12, a gantry crane foundation 761 of the traveling track 76 of the crane 7 in the beam-making area 1 is made of C30 concrete, a concrete reinforcement of the gantry crane foundation 761 includes two layers of steel bars arranged in the longitudinal bridge direction and a stirrup 10012 hooped on the two layers of steel bars, and the steel bars and the stirrup 10012 are steel bars with a diameter of 12 mm. Brick slag backfilling is adopted below the gantry crane foundation 761 to form a gantry rail backfilling foundation 762, a construction foundation needs to be reinforced to ensure that the preset value of the bearing capacity of the foundation reaches 200kPa, and a brick slag cushion layer and broken stones can be specifically adopted for paving and tamping. Preferably, the thickness of the gantry crane foundation 761 and the gantry rail backfill foundation 762 are set to be 50cm, and the width of the gantry crane rail backfill foundation 762 is larger than that of the gantry crane foundation 761.

Meanwhile, the total length of the traveling rail 76 of the embodiment is provided with a 1% longitudinal slope, the slope value is set according to the principle of local conditions and the terrain of the beam prefabrication site, and in other embodiments, the total length slope value of the traveling rail 76 can be changed according to the terrain of the site construction. The running rail 76 in this embodiment is provided with one break every 15 m.

After the construction of the walking rail 76 is completed, a plurality of monitoring points are arranged on the top surface of the rail to continuously observe the settlement of the rail, so that workers can timely find the abnormality and take effective measures to solve the abnormality. Loop wheel machine 7 still is equipped with and presss from both sides rail ware (not shown in the figure meaning, the same time down) and audible-visual annunciator (not shown in the figure meaning, the same time down), it can lock loop wheel machine 7 on it walking track 76, avoid loop wheel machine 7 receives unexpected thrust and slides, improves loop wheel machine 7's stability, audible-visual annunciator can be in be used for warning constructor when loop wheel machine 7 takes place the accident.

In the rail pressing device, rail pressing device embedded parts (not shown, the same applies below) are embedded in two sides of a set rail and are used for installing rail pressing devices to fix the rail. The rail pressing device embedded parts are arranged at a distance of 75cm, and the distance between every two adjacent rail pressing device embedded parts located on the same side of the rail is 75 cm.

Please refer to fig. 13 and 14, a plurality of beam storage pedestals 51 are disposed in the beam storage area 5 of the present application and used for placing a finished beam, the beam storage pedestals 51 adopt C30 integral concrete strip-shaped bases, the beam storage pedestals 51 are formed by casting a reinforcement cage 511 with concrete, and the reinforcement cage 511 is formed by binding two reinforcement cages with different sizes. Preferably, in this embodiment, the small steel reinforcement framework of the steel reinforcement cage 511 in the beam storage area 5 is formed by binding N4 steel reinforcements and N5 steel reinforcements, the large steel reinforcement framework is formed by binding N1 steel reinforcements, N2 steel reinforcements, N3 steel reinforcements, and N6 steel reinforcements, the height of the beam storage pedestal 51 formed by pouring concrete is 80cm, and the bottom of the beam storage pedestal 51 is backfilled with brick slag to form the beam storage pedestal backfill foundation 52.

The construction of the beam storage platforms 51 is the same as the construction process of the formwork foundation of the beam making area 1, namely, foundation pit excavation, steel reinforcement framework lowering, concrete pouring and curing are carried out, in addition, the top surfaces of the beam storage platforms 51 are kept to be positioned on the same horizontal plane by paying attention to the construction, 10cm stone chips are paved and the gradient of 2-3% is set after the ground between two adjacent beam storage platforms 51 is compacted.

In addition, in the step of reinforcing the beam storage platform base 51 foundation, a loose wood pile can be adopted for reinforcement to bear the weight of beam body concrete in the construction process, and 20 loose wood piles are evenly distributed and inserted in the range of each beam storage platform base according to the bearing capacity of the foundation and the load field in the construction.

The beam body prefabrication yard of this application divides through having the planning ground to each region of construction to form the construction of intelligent batch production line precast box roof beam for the template through setting up portable pedestal, carry out regional management with system roof beam, maintenance, stretch-draw and the beam deposit of beam body. And the beam manufacturing area 1, the maintenance area 3 and the tensioning area 4 are butted through the transverse moving area 2, so that the transportation mode of the precast beam in a precast yard is simplified, the transportation time of a beam body is saved, the construction production efficiency is improved, and accidents such as casualties are reduced. And this application has significantly reduced the template configuration quantity in conventional roof beam body precast yard, unlimited turnover use after automatic drive mould platform 6 can once make, and the residual value is higher, great saving economic cost.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. The foundation of a beam body prefabrication yard comprises a beam making area, a transverse moving area, a tensioning area and a beam storage area, and is characterized in that the foundations of the beam making area, the transverse moving area and the tensioning area comprise an automatic mould platform foundation and an automatic mould platform backfilling foundation which extend along the bridge direction, the automatic mould platform backfilling foundation is located below the automatic mould platform foundation, and reinforcing piles are further arranged on the foundations of the beam making area and the tensioning area;

2. The foundation of a beam body precast yard according to claim 1, wherein the automatic formwork foundation is a reinforced concrete structure comprising at least two reinforcing layers and stirrups hooped on the reinforcing layers, and the foundation comprises at least two reinforcing layers and stirrups hooped on the reinforcing layersBoth the reinforcement layer and the stirrup are made of

The reinforcing steel bar of (1).

3. The foundation of a beam body prefabrication field according to claim 1, wherein the automatic mould platform backfilling foundation is a brick slag backfilling structure.

4. The foundation of a beam body precast yard according to claim 1, wherein reinforcing treatment parts are arranged at two ends of the foundation of the tensioning area, the depth of a foundation pit dug by the reinforcing treatment parts is greater than that of the rest part of the foundation pit, and the thickness of an automatic mould platform foundation of the tensioning area foundation at the reinforcing treatment parts is greater than that of the rest part of the automatic mould platform foundation.

5. The foundation of a beam body precast yard according to claim 1, wherein the reinforcing piles of the beam making area and the tensioning area comprise concrete square piles, and the reinforcing piles of the beam storage area comprise pine piles.

6. The foundation of a beam body precast yard of claim 1, wherein said beam storage pedestals comprise C30 monolithic concrete strip foundations, said beam storage backfill foundations being located below said beam storage pedestals.

7. The foundation of a beam body precast yard according to claim 1, wherein a stone chip layer is laid between every two adjacent beam storage platforms, and the stone chip layer is provided with a gradient of 2-3%.

8. The foundation of a beam body precast yard according to claim 1, wherein a foundation top surface of the traverse area is lower than foundation top surfaces of the beam making area and the tension area.

9. The foundation of the beam body precast yard according to claim 1, wherein the foundation bearing of the beam body precast yard is greater than a preset value, and the preset value is 200 KPa.

10. A method for processing the foundation of a beam body precast yard is characterized by comprising the following steps:

lowering the prefabricated reinforcement framework into the foundation pit;

11. The method for treating the foundation of the beam body precast yard according to claim 10, wherein the construction foundation is reinforced by one of the following methods to make the bearing capacity of the foundation reach a preset value:

replacing and reinforcing coarse soil or slag;

and adopting the pile to reinforce the foundation.