CN108978699B - Land integral prefabricated bearing platform and production and installation method thereof - Google Patents

Land integral prefabricated bearing platform and production and installation method thereof Download PDF

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Publication number
CN108978699B
CN108978699B CN201810789295.3A CN201810789295A CN108978699B CN 108978699 B CN108978699 B CN 108978699B CN 201810789295 A CN201810789295 A CN 201810789295A CN 108978699 B CN108978699 B CN 108978699B
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China
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pile foundation
prefabricated
bearing platform
preformed hole
template
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CN108978699A (en
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张金树
林云飞
龚虹
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China Railway Guangzhou Engineering Group Co Ltd CRECGZ
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China Railway Guangzhou Engineering Group Co Ltd CRECGZ
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses an integral land prefabricated bearing platform which comprises a prefabricated bearing platform, wherein a bearing platform steel reinforcement cage and a plurality of pile foundation preformed holes are arranged in the prefabricated bearing platform, pile foundation preformed hole reinforcing steel reinforcement cages are arranged around the pile foundation preformed holes, the integral land prefabricated bearing platform also comprises a plurality of first connecting steel bars penetrating through the inner wall of the pile foundation preformed holes, one end of each first connecting steel bar extends into the bearing platform steel reinforcement cage, and the other end of each first connecting steel bar is remained in the pile foundation preformed holes. The method is used for the technical field of overland bearing platforms, and the method can be used for prefabricating and molding the reinforced concrete bearing platform, hoisting and installing the reinforced concrete bearing platform in place, transferring most of the work of the traditional bearing platform construction to a factory for completion, improving the concrete pouring construction quality, saving raw materials and labor force, accelerating the overall progress of bridge construction, realizing the effective connection between the prefabricated bearing platform and a pile foundation through the pile foundation preformed hole and the first connecting steel bar, and ensuring the installation and the fixation of the prefabricated bearing platform.

Description

Land integral prefabricated bearing platform and production and installation method thereof
Technical Field
The invention relates to the technical field of land bearing platforms, in particular to a land integrated prefabricated bearing platform and a production and installation method thereof.
Background
The traditional land bearing platform adopts a cast-in-place construction mode, namely digging a foundation pit → arranging pile head reinforcing steel → constructing a cushion layer → binding bearing platform reinforcing steel → erecting and reinforcing a template → pouring bearing platform concrete → maintaining → removing the template. The construction of the bearing platform in the cast-in-place mode has the following technical defects: (1) the construction quality of concrete is difficult to control, common quality problems such as mold running, slurry leakage, vibration leakage and the like easily occur, the construction speed is low, and the construction progress of the upper structure of the bridge is influenced; (2) the waste of raw materials such as cement, steel, broken stone and the like is serious, the consumption of water, electricity and gas is large, a bracket, a template, a fastener and the like are easy to lose, and the maintenance condition is difficult to guarantee; (3) the construction method has the advantages that a large number of constructors are needed, the labor intensity is high, the construction environment is greatly influenced by the natural environment, the construction of the bearing platform is influenced in rainy, snowy, high-temperature and cold weather, and the labor environment of workers is poor; (4) a large amount of concrete cast-in-place construction easily causes noise pollution to the surrounding environment, and generates a large amount of construction waste.
Disclosure of Invention
The invention aims to provide a land integral prefabricated bearing platform and a production and installation method thereof, which save raw materials and labor force and accelerate the construction progress.
The technical scheme adopted by the invention is as follows:
the utility model provides an integral prefabricated cushion cap of land, includes prefabricated cushion cap, is equipped with cushion cap steel reinforcement cage and a plurality of pile foundation preformed hole in the prefabricated cushion cap, is equipped with pile foundation preformed hole reinforcement steel reinforcement cage around the pile foundation preformed hole, still includes a plurality of first connecting reinforcement that pass pile foundation preformed hole inner wall, and in each first connecting reinforcement one end stretched into cushion cap steel reinforcement cage, the pile foundation preformed hole was stayed to the other end.
A production and installation method of an integral land prefabricated bearing platform comprises the following production steps:
a. processing and manufacturing a bottom die, 4 side dies and a plurality of cylindrical pile foundation preformed hole templates, forming a plurality of through holes on the wall surface of each pile foundation preformed hole template, and assembling a pile cap reinforcement cage and a pile foundation preformed hole reinforcement cage;
b. hoisting a pile cap reinforcement cage, a pile foundation preformed hole reinforcement cage, a side mold and a pile foundation preformed hole template on a bottom mold, wherein the pile foundation preformed hole template is installed in the pile foundation preformed hole reinforcement cage;
c. horizontally inserting a first connecting steel bar through a through hole in the pile foundation preformed hole template, wherein one end of the first connecting steel bar extends into a pile cap reinforcement cage, and the other end of the first connecting steel bar is left in the pile foundation preformed hole template;
d. pouring bearing platform concrete, curing the concrete after pouring, and removing the side mold and the pile foundation preformed hole template;
also comprises the following installation steps:
e. carrying out foundation pit excavation and base treatment at the installation position, transporting the prefabricated bearing platform to the installation position from a prefabricated factory, and hoisting the prefabricated bearing platform to enable the pile foundation to be inserted into the pile foundation reserved hole;
f. binding stirrups in the pile foundation reserved hole from bottom to top, pouring concrete to the top surface of the prefabricated bearing platform, and installing a pier stud above the prefabricated bearing platform;
the production step and the mounting step may be performed simultaneously.
And further as an improvement of the technical scheme, the installation construction of the pier stud in the step f adopts a prefabricated pier stud mode, a vertical second connecting steel bar for connecting with the prefabricated pier stud is installed in a preformed hole of the pile foundation, then concrete is poured, and then the prefabricated pier stud is installed.
And further as an improvement of the technical scheme of the invention, the installation construction of the pier column in the step f adopts a cast-in-place pier column mode, a pier column reinforcement cage and a pier column template are assembled above the prefabricated bearing platform, and then concrete is poured from bottom to top from the bottom of the pile foundation preformed hole to the top of the pier column template.
Further as an improvement of the technical scheme of the invention, in the step a, a prefabricated site is selected, a prefabricated factory is built, the whole prefabricated site is positioned and divided, and a template processing and assembling station, a steel bar assembling station, a prefabricated production station and a maintenance and storage station are determined.
And (d) further improving the technical scheme of the invention, concrete is poured in a layered mode in the step d, and the concrete is symmetrically poured around the pile foundation preformed hole template.
And further as an improvement of the technical scheme of the invention, marking the center of the installation position of the prefabricated bearing platform and the center of the pile foundation in the step e, and drawing the four side lines and the pile foundation circular line of the installation position of the prefabricated bearing platform.
The technical scheme is further improved, two walking tracks are arranged on two sides of the installation position of the prefabricated bearing platform, two gantry cranes are arranged between the two walking tracks, the two gantry cranes hoist the prefabricated bearing platform to the position above the pile foundation along the tracks, the position of the prefabricated bearing platform is adjusted through the drawn four side lines and the pile foundation circular line, the prefabricated bearing platform is lowered to a position 10cm away from the ground, the lowering is suspended, the deviation condition of the four sides of the prefabricated bearing platform and the drawn four side lines is checked, and the prefabricated bearing platform is lowered after the error is confirmed.
The pile foundation preformed hole template comprises a plurality of template blocks which are mutually spliced, and the through holes are formed in the splicing positions of the template blocks.
Further as an improvement of the technical scheme of the invention, the aperture of the pile foundation preformed hole template is larger than the diameter of the pile foundation, and the number of the pile foundation preformed hole templates and the number of the pile foundations are 4.
The invention has the beneficial effects that: the integral prefabricated pile cap on land and the production and installation method thereof firstly prefabricate and form the reinforced concrete pile cap, then hoist and install the reinforced concrete pile cap in place, transfer most of the work of the traditional pile cap construction to a factory for completion, can improve the pouring construction quality of concrete, save raw materials and labor force, accelerate the overall progress of bridge construction, realize the effective connection of the prefabricated pile cap and a pile foundation through a pile foundation preformed hole and a first connecting steel bar, and ensure that the prefabricated pile cap is fixedly and reliably installed.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a block diagram of a production process for a prefabricated platform according to an embodiment of the present invention;
FIG. 2 is a block diagram of an installation process of a prefabricated platform according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a prefabricated platform according to an embodiment of the invention;
fig. 4 is a layout view of a first coupling bar according to an embodiment of the present invention;
FIG. 5 is a top view of a pile foundation preformed hole reinforcement cage and a pile foundation preformed hole formwork according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a pile foundation preformed hole template according to an embodiment of the invention;
FIG. 7 is an expanded view of a pile foundation prepared hole template according to an embodiment of the invention;
FIG. 8 is a schematic diagram of hoisting a prefabricated bearing platform according to an embodiment of the invention.
Detailed Description
Referring to fig. 1 to 8, the present invention is an integral precast floor cap, characterized in that: including prefabricated cushion cap 1, be equipped with cushion cap steel reinforcement cage and a plurality of pile foundation preformed hole 2 in the prefabricated cushion cap 1, be equipped with pile foundation preformed hole reinforcement steel reinforcement cage 5 around pile foundation preformed hole 2, still including a plurality of first connecting reinforcement 3 that pass 2 inner walls of pile foundation preformed hole, 3 one end of each first connecting reinforcement stretch into the cushion cap steel reinforcement cage, and the pile foundation preformed hole 2 is stayed to the other end.
This integral prefabricated cushion cap of land earlier carries out the prefabricated shaping of reinforced concrete cushion cap, and the handling installation targets in place again, and the mill is accomplished with most work transfer of traditional cushion cap construction, can improve the concreting construction quality, saves raw and other materials and hand labor power to accelerated the whole progress of bridge construction, realize the effective connection of prefabricated cushion cap 1 and pile foundation 8 through pile foundation preformed hole 2 and first connecting reinforcement 3, guarantee that the installation of prefabricated cushion cap 1 is fixed reliable.
A production and installation method of an integral land prefabricated bearing platform comprises the following production steps:
a1, selecting a prefabricated site of the prefabricated bearing platform 1, building a prefabricated factory, positioning and dividing the whole prefabricated site, determining a template processing and assembling station, a steel bar assembling station, a prefabricated production station and a maintenance and storage station, and producing the prefabricated bearing platform 1 by the stations, so that the orderly production is facilitated and the production quality is ensured.
a2, processing and manufacturing a bottom die, 4 side dies and a plurality of cylindrical pile foundation preformed hole templates 4 on a template processing and assembling station, and forming a plurality of through holes on the wall surface of each pile foundation preformed hole template 4; and assembling a bearing platform reinforcement cage and a pile foundation preformed hole reinforcement cage 5 on a reinforcement assembling station. Preferably, the aperture of pile foundation preformed hole template 4 is slightly greater than the diameter of pile foundation 8, and the quantity of pile foundation preformed hole template 4 and pile foundation 8 is 4. The pile foundation preformed hole reinforcement cage 5 adopts a longitudinal main reinforcement and stirrup style, and the radius of the reinforcement cage is 2-3cm larger than that of the pile foundation 8.
b. On being fixed in prefabricated production station with the die block installation, hoisting cushion cap steel reinforcement cage, pile foundation preformed hole reinforcement steel reinforcement cage 5, side form, pile foundation preformed hole template 4 on the die block, pile foundation preformed hole template 4 is installed in pile foundation preformed hole reinforcement steel reinforcement cage 5, as shown in fig. 5. Install cushion 6 between pile foundation preformed hole reinforcement steel reinforcement cage 5 and pile foundation preformed hole template 4 for protect pile foundation preformed hole reinforcement steel reinforcement cage 5.
c. Pass the through-hole level on pile foundation preformed hole template 4 and insert first connecting reinforcement 3, in 3 one end of first connecting reinforcement stretched into cushion cap steel reinforcement cage, the other end was stayed in pile foundation preformed hole template 4, as shown in fig. 4. The pile foundation preformed hole reinforcement steel reinforcement cage 5 and the first connecting steel bar 3 guarantee the reliable connection of the follow-up prefabricated bearing platform 1 and the pile foundation 8, so that the reliable support of the upper pier stud is guaranteed.
d. And (3) casting the pile foundation reserved hole template concrete layer by layer, symmetrically casting the concrete around the pile foundation reserved hole template 4 to prevent the pile foundation reserved hole template 4 from laterally moving, obtaining the prefabricated pile foundation 1 after casting, horizontally pushing the whole prefabricated pile foundation 1 to a maintenance and storage station, maintaining the concrete, after maintaining for 12 hours at normal temperature, removing the side mold and the pile foundation reserved hole template 4, repairing various defects, and continuously maintaining the strength to be more than 85%. Demolish pile foundation preformed hole template 4 back, pile foundation preformed hole template 4 department forms pile foundation preformed hole 2 of being connected with pile foundation 8 promptly.
For the production of prefabricated cushion cap 1 above, transport to the building site and install after 1 production of prefabricated cushion cap, install prefabricated cushion cap 1 on pile foundation 8, still include the installation step, prefabricated cushion cap 1's production and installation step can go on in step, accelerate the construction progress greatly, the installation step is as follows:
e1, performing foundation pit excavation and base treatment at the installation position, cleaning the installation position, laying a layer of broken stone and tamping in the installation range of the prefabricated bearing platform 1, and reinforcing the weak part of the base by adopting a method of replacing, filling and tamping. Within 20cm outside the installation range of the prefabricated bearing platform 1, a layer of cushion concrete is poured, and a flat vibrator is used for vibrating and tamping to ensure that the flatness of the cushion foundation is not more than 2 mm.
e2, transporting the prefabricated bearing platform 1 to the installation position from the prefabrication factory, enabling the bottom die at the bottom of the prefabricated bearing platform 1 to flow to the prefabrication production station for recycling, and continuously producing the prefabricated bearing platform 1.
e3, marking the center of the installation position of the prefabricated bearing platform 1 and the center of the pile foundation 8, and drawing the four side lines of the installation position of the bearing platform and the circular side line of the pile foundation 8.
e4, hoisting the prefabricated bearing platform 1, and matching with a single-machine large-tonnage truck crane or a crawler crane or a double-machine truck crane or a crawler crane according to the size and the weight of the prefabricated bearing platform 1. As shown in fig. 8, if the site is relatively flat, the scheme of hoisting by using the gantry crane 72 is adopted, two left and right traveling rails 71 are laid on both sides of the installation position of the prefabricated platform 1 along the line direction by taking the line center as an axis, and two gantry cranes 72 are installed between the two traveling rails 71. Two gantry cranes 72 hook the pre-buried hook bolt or hang the nail on the four corners of the prefabricated bearing platform 1 through four steel wire ropes or hoisting belts with the same length and material, hoist the prefabricated bearing platform 1 to the top of the pile foundation 8 along the walking track 71, slowly lower the prefabricated bearing platform 1, and continuously adjust the front, back, left and right positions of the prefabricated bearing platform 1 in the period, so that the pile foundation preformed holes 2 correspond to the pile heads of the pile foundation 8 one by one, and the pile foundation 8 is inserted into the pile foundation preformed holes 2. The position of the prefabricated cushion cap 1 is adjusted through the drawn four side lines and the pile foundation 8 round side lines, the cushion cap is placed to be 10cm away from the ground, the placing is suspended, the deviation conditions of the four sides of the prefabricated cushion cap 1 and the drawn four side lines are checked, the prefabricated cushion cap 1 can be placed after being confirmed to be free of errors, if the errors are large, the prefabricated cushion cap 1 can be lifted again, and the installation is placed after being adjusted again.
e5, checking the installation condition of the prefabricated bearing platform 1, rechecking the height and the horizontal position, backfilling the foundation pits around the prefabricated bearing platform 1 layer by layer symmetrically, and tamping layer by layer.
For hoisting prefabricated cushion cap 1 on pile foundation 8, need pour concrete in pile foundation preformed hole 2 after the hoist and mount of prefabricated cushion cap 1 are accomplished in order to connect prefabricated cushion cap 1 and pile foundation 8, when the pier stud of installation prefabricated cushion cap 1 top adopted different construction methods, the pouring method of the interior concrete of pile foundation preformed hole 2 was different, following step:
f1, when the installation construction of pier stud adopts the prefabricated pier stud mode, install the vertical second connecting reinforcement that is used for being connected with prefabricated pier stud in pile foundation preformed hole 2, ligature stirrup from bottom to top to prefabricated cushion cap 1 top surface, the locator of installation fixed second connecting reinforcement, then the layering concreting is to prefabricated cushion cap 1 top surface, installs prefabricated pier stud again.
f2, when the installation construction of the pier stud adopts a cast-in-place pier stud mode, namely the pier stud is cast in situ, a pier stud template installation base with the thickness of 3cm is leveled and paved by high-grade mortar at the periphery of the pile foundation reserved hole 2, the level is ensured, and the inner edge of the high-grade mortar cannot intrude into the pier stud template so as to avoid causing the necking of the pier stud. Erecting a steel pipe support on the prefabricated bearing platform 1, binding a pier column reinforcement cage, installing stirrups in the pile foundation preformed hole 2 from bottom to top one by one, and hoisting the pier column template section by section. And finally, pouring concrete in a string tube layered pouring mode from the bottom of the pile foundation preformed hole 2 of the prefabricated bearing platform 1 to the top of the pier stud template from bottom to top. The grade change part of the precast pile cap 1 and the pier stud concrete, namely the interface of the precast pile cap 1 and the pier stud, can be poured with the pier stud concrete after the concrete in the pile foundation preformed hole 2 is initially set. And after the concrete is cured to the construction standard allowable strength after the pouring is finished, removing the pier column template and transferring to the next installation station. The construction process that pile foundation preformed hole 2 and pier stud are poured together is adopted, and the reliable connection of pile foundation 8, prefabricated cushion cap 1 and pier stud is guaranteed to guarantee overall structure's stability and the reliable support to the bridge.
Adopt this prefabricated cushion cap 1 to have following advantage: (1) the reinforced concrete bearing platform is prefabricated and molded at one time, lifted and installed in place at one time, most of the work of the traditional bearing platform construction is transferred to a factory to be completed, the construction progress of the engineering at the lower part of the bridge is accelerated, and industrial production and installation are realized; (2) the common construction quality problems of mold running, slurry leakage and the like of the reinforced concrete bearing platform in the traditional cast-in-place mode are reduced, and the construction quality of the reinforced concrete bearing platform is improved; (3) the construction materials such as cement, steel bars, broken stones and the like are saved on the whole engineering, water, electricity and gas resources are saved, the utilization rate of various turnover materials such as brackets, templates, fasteners and the like is improved, and the engineering investment and cost are reduced; (4) the labor consumption is reduced, the labor intensity of workers is reduced, and a part of field construction workers are converted into factory workers, so that the physical and psychological health of the workers is fundamentally ensured, and the construction operation environment of the workers is improved; (5) reduce and reduced the noise influence in the construction, reduce the production of construction rubbish.
As a preferred embodiment of the present invention, as shown in fig. 6 and 7, the pile foundation prepared hole formwork 4 includes a plurality of formwork segments 41 that are joined to each other, through holes are opened at the joints of the formwork segments 41, and the formwork segments 41 are connected by bolts. Pile foundation preformed hole template 4 adopts the block design for installation and dismantlement are convenient and fast more.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (9)

1. The utility model provides a production and installation method of integral prefabricated cushion cap of land, its characterized in that, integral prefabricated cushion cap of land includes prefabricated cushion cap (1), be equipped with cushion cap steel reinforcement cage and a plurality of pile foundation preformed hole (2) in prefabricated cushion cap (1), center on pile foundation preformed hole (2) are equipped with pile foundation preformed hole reinforcement steel reinforcement cage (5), still include to pass a plurality of first connecting reinforcement (3) of pile foundation preformed hole (2) inner wall, each in first connecting reinforcement (3) one end stretches into cushion cap steel reinforcement cage, the pile foundation preformed hole (2) are stayed to the other end, still include following production step:
a. processing and manufacturing a bottom die, 4 side dies and a plurality of cylindrical pile foundation preformed hole templates (4), forming a plurality of through holes on the wall surface of each pile foundation preformed hole template (4), and assembling a bearing platform reinforcement cage and a pile foundation preformed hole reinforcement cage (5);
b. hoisting a pile cap reinforcement cage, a pile foundation preformed hole reinforcement cage (5), a side mold and a pile foundation preformed hole template (4) on a bottom mold, and installing the pile foundation preformed hole template (4) in the pile foundation preformed hole reinforcement cage (5);
c. horizontally inserting the first connecting steel bars (3) through holes in the pile foundation preformed hole template (4), wherein one ends of the first connecting steel bars (3) extend into a bearing platform steel reinforcement cage, and the other ends of the first connecting steel bars are left in the pile foundation preformed hole template (4);
d. pouring the concrete of the bearing platform, curing the concrete after pouring, and dismantling the side die and the pile foundation preformed hole template (4);
also comprises the following installation steps:
e. carrying out foundation pit excavation and base treatment at the installation position, transporting the prefabricated bearing platform (1) to the installation position from a prefabricated factory, and hoisting the prefabricated bearing platform (1) to enable the pile foundation (8) to be inserted into the pile foundation preformed hole (2);
f. binding stirrups in the pile foundation preformed hole (2) from bottom to top, pouring concrete to the top surface of the prefabricated bearing platform (1), and installing a pier stud above the prefabricated bearing platform (1);
the producing step and the mounting step may be performed simultaneously.
2. A method of producing and installing integral precast landform platforms according to claim 1, wherein: and f, adopting a prefabricated pier stud mode for installation and construction of the pier stud, installing vertical second connecting steel bars used for being connected with the prefabricated pier stud in the pile foundation preformed hole (2), pouring concrete, and installing the prefabricated pier stud.
3. A method of producing and installing integral precast landform platforms according to claim 1, wherein: and f, adopting a cast-in-place pier column mode for pier column installation construction, assembling a pier column reinforcement cage and a pier column template above the prefabricated bearing platform (1), and then pouring concrete from bottom to top from the bottom of the pile foundation preformed hole (2) to the top of the pier column template.
4. A method of producing and installing integral precast landform platforms according to claim 1, wherein: in the step a, a prefabricated site is selected, a prefabricated factory is built, the whole prefabricated site is positioned and divided, and a template processing and assembling station, a steel bar assembling station, a prefabricated production station and a maintenance and storage station are determined.
5. A method of producing and installing integral precast landform platforms according to claim 1, wherein: and d, pouring concrete in a layered mode in the step d, and symmetrically pouring concrete around the pile foundation preformed hole template (4).
6. A method of producing and installing integral precast landform platforms according to claim 1, wherein: and e, marking the center of the installation position of the prefabricated bearing platform (1) and the center of the pile foundation (8), and drawing the four side lines of the installation position of the prefabricated bearing platform (1) and the circular side line of the pile foundation (8).
7. A method of producing and installing integral precast landforms according to claim 6, wherein: two walking rails (71) are installed on two sides of the installation position of the prefabricated bearing platform (1), two gantry cranes (72) are installed between the two walking rails (71), the two gantry cranes (72) hoist the prefabricated bearing platform (1) to the upper side of the pile foundation (8) along the walking rails (71), the prefabricated bearing platform (1) is adjusted in position through the drawn four side lines and the round side line of the pile foundation (8), the prefabricated bearing platform (1) is placed to be 10cm away from the ground, the placing is suspended, the deviation conditions of the four sides of the prefabricated bearing platform (1) and the drawn four side lines are checked, and the prefabricated bearing platform is placed after the error is confirmed.
8. A method of producing and installing integral precast landform platforms according to claim 1, wherein: the pile foundation preformed hole template (4) comprises a plurality of template blocks (41) which are mutually spliced, and the through holes are arranged at the splicing parts of the template blocks (41).
9. A method of producing and installing integral precast landform platforms according to claim 1, wherein: the aperture of pile foundation preformed hole template (4) is greater than the diameter of pile foundation (8), the quantity of pile foundation preformed hole template (4) and pile foundation (8) is 4.
CN201810789295.3A 2018-07-18 2018-07-18 Land integral prefabricated bearing platform and production and installation method thereof Active CN108978699B (en)

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CN109695252B (en) * 2018-12-12 2021-03-05 上海巴安水务股份有限公司 Quality control method for construction process of equipment foundation reserved hole

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KR100853125B1 (en) * 2007-02-06 2008-08-20 원 회 양 Frame type concrete block and method of construction using for PP mat and frame type concrete block
CN101476326B (en) * 2009-01-23 2013-04-24 广州市市政集团有限公司 Bearing platform prefabrication and construction method
CN102127913B (en) * 2011-05-04 2012-01-25 江苏建华管桩有限公司 Method for connecting concrete pile and bearing platform
CN103774685B (en) * 2014-01-09 2015-10-28 江苏龙冠新型材料科技有限公司 The preparation method of navigation mark concrete bearing platform
CN104404869A (en) * 2014-11-26 2015-03-11 天津港航工程有限公司 Pile column type concrete hollow pile pier structure
CN207017294U (en) * 2017-08-04 2018-02-16 上海宝冶集团有限公司 Equipment anchor bolt buries the construction tool of reserving hole

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