CN111058644A - Ultrahigh-precision rapid construction process for ground intensive embedded parts of large-area cold storage - Google Patents

Ultrahigh-precision rapid construction process for ground intensive embedded parts of large-area cold storage Download PDF

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Publication number
CN111058644A
CN111058644A CN201911218986.9A CN201911218986A CN111058644A CN 111058644 A CN111058644 A CN 111058644A CN 201911218986 A CN201911218986 A CN 201911218986A CN 111058644 A CN111058644 A CN 111058644A
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China
Prior art keywords
embedded
construction
concrete
embedded parts
elevation
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Pending
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CN201911218986.9A
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Chinese (zh)
Inventor
张甡
郑建国
田世杰
尚宝英
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Zhongqi Jiaojian Group Corp Ltd
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Zhongqi Jiaojian Group Corp Ltd
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Priority to CN201911218986.9A priority Critical patent/CN111058644A/en
Publication of CN111058644A publication Critical patent/CN111058644A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • E04G21/18Adjusting tools; Templates
    • E04G21/1841Means for positioning building parts or elements
    • E04G21/185Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/40Separate connecting elements
    • E04B1/41Connecting devices specially adapted for embedding in concrete

Abstract

The invention discloses an ultrahigh-precision rapid construction process for a large-area cold storage ground intensive embedded part, which comprises the following steps of: firstly, preparing construction; secondly, prefabricating the turn buckle; prefabricating an embedded part; fourthly, installing, fixing and correcting the embedded part; (V) pouring concrete; and (VI) acceptance and handover. The application of the invention can effectively carry out cluster control such as supporting, quick leveling and the like on all embedded parts, can quickly construct large-area and dense goods shelf embedded parts with high precision, has high construction efficiency and good construction quality, can effectively save a large number of construction periods and saves construction cost.

Description

Ultrahigh-precision rapid construction process for ground intensive embedded parts of large-area cold storage
Technical Field
The invention relates to an ultrahigh-precision rapid construction process for a ground intensive embedded part of a large-area cold storage, belonging to the technical field of building construction.
Background
Along with the high-speed development of storage, refrigeration house and express delivery industry, the requirements on the aspects of single scale, height, working temperature, structural form and the like of the storage shelf are higher and higher, so that the requirements on the aspects of construction period, quality, safety and the like of large-area dense shelf embedded parts in the construction process are also stricter and stricter. In addition, the installation problem of large-area dense embedded parts such as storage, workshops and the like is increased in future engineering, and a construction method which is standardized and normalized, advanced in construction process, high in technical content, guaranteed in quality, economical and reasonable is urgently needed to be formed in the industry.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an ultrahigh-precision rapid construction process for a large-area cold storage ground intensive embedded part.
In order to solve the technical problem, the technical scheme adopted by the invention comprises the following steps:
the ultrahigh-precision rapid construction process of the large-area cold storage ground intensive embedded part is characterized by comprising the following steps of:
preparation for construction
1, establishing a perfect construction technology and quality management system, and carefully mastering construction drawings by all technicians to deal with related technologies;
2, all measuring instruments are completely prepared and are qualified according to the regulation of the fine rules for implementing the measurement method of the people's republic of China; finishing the verification of the construction drawing, and completing design bottom crossing;
and 3, complete engineering leveling results, elevation measurement results and other data provided by professional surveying and mapping design units.
And 4, determining the position and the form of the embedded part according to the actual engineering situation and the design requirement, and determining the manufacturing process and the material requirement of the turn buckle.
(II) prefabricating turn buckle
The turn buckle is manufactured according to a deepened design drawing, and according to the actual engineering requirements, the turn buckle is mainly manufactured by welding two threaded steel bar heads with the length of 100mm and the diameter of 20, 2 standard nuts with the inner diameter of 20 and a thin cushion iron plate with the diameter of 50mm multiplied by 50 mm.
(III) Pre-embedded part prefabrication
And welding the embedded steel plate, the turn buckle and the embedded part fixing claws together according to requirements. Two turnbuckles are required to be perpendicular to the embedded part, and the iron pads under the two turnbuckles are parallel to the embedded part. The heights of the turn buckle and the embedded part are determined according to the pouring thickness of the concrete.
(IV) installation, fixation and correction of embedded part
And positioning and paying off the position of the goods shelf according to the design requirement, and determining the installation position of the embedded part. The single embedded part is temporarily supported and fixed by using two bolts with turnbuckles and lower iron pads, and is initially adjusted to a designed elevation, the error of the elevation is allowed to be within 5mm, and the deviation of the central position of the embedded part is controlled to be within 2 mm.
After the embedded parts in each construction section are installed, two threaded steel bars with the diameter of 20 are adopted to connect all the embedded parts vertically and horizontally to form a fixed whole (the deviation of the central position of the embedded parts is not over-deviated by paying attention to correction at any time in the welding process).
And then, re-correcting each embedded part, and carrying out elevation fine adjustment through the turnbuckle to ensure that the elevation deviation of each embedded part is controlled within 2 mm.
(V) concrete pouring
1 concrete placement adopts the mode of erectting the pump line, and the pump line should erect firmly, do not have the perturbative contact with built-in fitting and connecting reinforcement.
And 2, arranging special installers to monitor the concrete in a synchronous and whole-process side station manner when the concrete is poured and tamped.
3, the concrete is strictly poured in a layered mode, and when the concrete is pumped for feeding, the embedded parts and the connecting reinforcing steel bars are prevented from being impacted, so that the embedded parts are correct in position and do not have any disturbance phenomenon.
(VI) acceptance and handover
Marking an axis and an elevation on each embedded part, checking and accepting the embedded parts one by the supervision and design installation unit, making written checking and accepting and handing-over records, and making temporary protection measures for the embedded parts when the construction period is long and the embedded parts cannot be handed over immediately.
The characteristics of the method of the invention
According to the process, the simple turn-buckle bolts are arranged to carry out cluster control such as supporting and quick leveling on all embedded parts, large-area and dense goods shelf embedded parts can be constructed quickly and accurately, construction efficiency is high, construction quality is good, a large number of construction periods can be effectively saved, and construction cost is saved.
The simple turn buckle adopted by the process can be prefabricated on site through the waste of the steel bar head and the standard nut, so that the construction material is saved, the concept of green construction material saving is met, and the construction period and the construction cost are saved.
The process has the advantages of reliable process, high construction precision, easy understanding and mastering, convenient operation and the like, and has strong operability and popularization.
Application scope of the invention
The construction method is suitable for the pre-buried construction of the reservation of the dense embedded parts of large-area goods shelves such as warehouses, refrigeration houses and the like, and the design precision index range of the embedded parts is as follows: the center displacement of the embedded parts in the same group is less than or equal to 2mm, and the height deviation of the top mark is less than or equal to 2 mm.
The invention's process principle
The ultrahigh precision quick construction technology of the intensive embedded parts on the ground of the large-area cold storage is a construction technology for quickly and highly precisely installing a large amount of intensive goods shelf embedded parts on the ground of the large-area cold storage with heat preservation requirements. The technology is mainly characterized in that during the prefabrication and processing of the embedded parts, a simple turnbuckle with a support steel plate is arranged on two sides of the bottom of the embedded parts respectively for temporary supporting and primary leveling, after the embedded parts are completely installed, all the embedded parts are fixedly connected into a whole by adopting steel bars with the diameter of 20, and finally, the flatness and the height fine adjustment are carried out through the turnbuckle, so that the quick and high-precision installation of all the embedded parts is ensured, and the concrete principle is shown in figure 1.
Has the advantages that:
economic benefits
The simple turn-buckle bolts in the construction method are prefabricated on site by adopting site reinforcing bar head waste materials and standard nuts, construction materials are saved, a green construction science and technology demonstration idea is fully responded, and the construction period and the construction cost are saved. Meanwhile, through the application of the construction method, cluster control such as supporting, quick leveling and the like can be effectively carried out on all embedded parts, large-area and dense goods shelf embedded parts can be quickly constructed with high precision, the construction efficiency is high, the construction quality is good, a large number of construction periods can be effectively saved, and the construction cost is saved.
Social benefits
The process adopts the simple turnbuckle to carry out fast and high-precision cluster control on the large-area goods shelf embedded part, and effectively solves the problems of low installation efficiency and poor precision of the large-area intensive goods shelf embedded part. Meanwhile, the process has the advantages of reliable process, high construction precision, easy understanding and mastering, convenient operation and the like, and is strong in operability and popularization. The construction method is applied to a project of a Qingdao Yibang biological science and technology industry park, namely a finished product warehouse project, the construction precision and the installation quality of the installation of the engineering goods shelf are ensured, the construction period is greatly shortened, and the consistent praise of owners and competent departments is gained.
Drawings
FIG. 1 is a schematic view of a monolithic embedment installation. In the figure, 1 is an embedded steel plate; 2 is a 20-aperture nut; 3 is a 20 diameter rebar; 4 is 50 x 50 parallels.
FIG. 2 shows the embedment being fixed by a turn buckle.
Fig. 3 shows the embedment being fixed by the reinforcing steel bar group control.
FIG. 4 shows the concrete pump pipe being fixed and the concrete is prepared for floor casting.
FIG. 5 illustrates an embedment bolt welding construction.
FIG. 6 shows the effect of the embedment positioning bolt.
Fig. 7 shows the effect of fixing and mounting the shelf and the rail.
Detailed Description
The ultrahigh-precision rapid construction process for the large-area cold storage ground intensive embedded part provided by the embodiment comprises the following steps of:
preparation for construction
1, establishing a perfect construction technology and quality management system, and carefully mastering construction drawings by all technicians to deal with related technologies;
2, all measuring instruments are completely prepared and are qualified according to the regulation of the fine rules for implementing the measurement method of the people's republic of China; finishing the verification of the construction drawing, and completing design bottom crossing;
and 3, complete engineering leveling results, elevation measurement results and other data provided by professional surveying and mapping design units.
And 4, determining the position and the form of the embedded part according to the actual engineering situation and the design requirement, and determining the manufacturing process and the material requirement of the turn buckle.
(II) prefabricating turn buckle
The turn buckle is manufactured according to a deepened design drawing, and according to the actual engineering requirements, the turn buckle is mainly manufactured by welding two threaded steel bar heads with the length of 100mm and the diameter of 20, 2 standard nuts with the inner diameter of 20 and a thin cushion iron plate with the diameter of 50mm multiplied by 50 mm.
(III) Pre-embedded part prefabrication
And welding the embedded steel plate, the turn buckle and the embedded part fixing claws together according to requirements. Two turnbuckles are required to be perpendicular to the embedded part, and the iron pads under the two turnbuckles are parallel to the embedded part. The heights of the turn buckle and the embedded part are determined according to the pouring thickness of the concrete.
(IV) installation, fixation and correction of embedded part
And positioning and paying off the position of the goods shelf according to the design requirement, and determining the installation position of the embedded part. The single embedded part is temporarily supported and fixed by using two bolts with turnbuckles and lower iron pads, and is initially adjusted to a designed elevation, the error of the elevation is allowed to be within 5mm, and the deviation of the central position of the embedded part is controlled to be within 2 mm.
After the embedded parts in each construction section are installed, two threaded steel bars with the diameter of 20 are adopted to connect all the embedded parts vertically and horizontally to form a fixed whole (the deviation of the central position of the embedded parts is not over-deviated by paying attention to correction at any time in the welding process).
And then, re-correcting each embedded part, and carrying out elevation fine adjustment through the turnbuckle to ensure that the elevation deviation of each embedded part is controlled within 2 mm.
(V) concrete pouring
1 concrete placement adopts the mode of erectting the pump line, and the pump line should erect firmly, do not have the perturbative contact with built-in fitting and connecting reinforcement.
And 2, arranging special installers to monitor the concrete in a synchronous and whole-process side station manner when the concrete is poured and tamped.
3, the concrete is strictly poured in a layered mode, and when the concrete is pumped for feeding, the embedded parts and the connecting reinforcing steel bars are prevented from being impacted, so that the embedded parts are correct in position and do not have any disturbance phenomenon.
(VI) acceptance and handover
Marking an axis and an elevation on each embedded part, checking and accepting the embedded parts one by the supervision and design installation unit, making written checking and accepting and handing-over records, and making temporary protection measures for the embedded parts when the construction period is long and the embedded parts cannot be handed over immediately.
The specific implementation process and effect are shown in figures 2-7.
Example 2 example of application
The construction method is successfully applied to projects such as expansion projects of vacuum pump production workshops, Qingdao Yibang biotech industrial park projects (novel veterinary biological product GMP workshops) projects, Yibang biotech industrial park projects-finished product libraries and the like, the engineering quality meets the expected requirements, and the Qingdao Yibang biotech industrial park projects (novel veterinary biological product GMP workshops) projects are taken as examples.
Overview of the engineering
The Qingdao Yibang biotech industrialised park project (novel veterinary biological product GMP workshop) can be applied. The project is positioned in a Qingdao high and new area and a source road 260 number, is an industrial factory building, has the building area of 27540.4 square meters, two layers, the height of 17.9m and the manufacturing cost of 12189.1887 ten thousand yuan, takes a foundation as a prefabricated reinforced concrete square pile foundation and has a frame structure as a main body. The safety grade of the building structure is two grades, and the earthquake resistance grade is as follows: and (3) three stages.
Construction conditions
Qingdao Yibang biological technology industrial park project (novel veterinary biological product GMP workshop) engineering is located Qingdao Yibang biological technology industrial park academy, and the workshop is a modern vaccine production workshop integrating science and technology research and development, production and refrigeration. The high-temperature storage rack comprises a low-temperature refrigeration house and a high-temperature refrigeration house which are 8829 square meters in total, and an internal ground goods shelf embedded part 3324. In order to meet the requirement of rapid and high-precision embedded construction of the intensive embedded parts of the goods shelves of the refrigeration house, a project part adopts a large-area intensive refrigeration house ground embedded part ultrahigh-precision rapid construction method, and the expected target is achieved.
Engineering monitoring and application effect
The simple turn-buckle bolt in the construction method carries out cluster control such as supporting, quick leveling and the like on all embedded parts, large-area and dense goods shelf embedded parts can be quickly and accurately constructed through the application of the construction method, the construction efficiency is high, the construction quality is good, and a large number of construction periods can be effectively saved. The simple turn buckle adopted by the construction method can be prefabricated on site through the waste of the steel bar head and the standard nut, so that the construction material is saved, the material-saving concept of green construction is met, and the construction cost is saved. The process has the advantages of reliable process, high construction precision, easy understanding and mastering, convenient operation and the like, and has strong operability and popularization.

Claims (1)

1. The ultrahigh-precision rapid construction process of the large-area cold storage ground intensive embedded part is characterized by comprising the following steps of:
preparation for construction
1, establishing a perfect construction technology and quality management system, and carefully mastering construction drawings by all technicians to deal with related technologies;
2, all measuring instruments are completely prepared and are qualified according to the regulation of the fine rules for implementing the measurement method of the people's republic of China; finishing the verification of the construction drawing, and completing design bottom crossing;
3, the engineering leveling results, the elevation measurement results and other data provided by professional surveying and mapping design units are complete;
4, determining the position and the form of the embedded part according to the actual engineering situation and the design requirement, and determining the manufacturing process and the material requirement of the turn buckle;
(II) prefabricating turn buckle
Manufacturing a turn buckle according to a deepened design drawing, and according to the actual engineering requirements, welding two 100mm long-diameter 20 threaded steel bar heads, 2 standard nuts with the inner diameter of 20 and a 50mm multiplied by 50mm thin cushion iron plate to manufacture the turn buckle;
(III) Pre-embedded part prefabrication
Welding the embedded steel plate, the turn buckle and the embedded part fixing claws together according to requirements; two turnbuckles are required to be perpendicular to the embedded part, and the iron pads under the two turnbuckles are parallel to the embedded part; the heights of the turn buckle and the embedded part are determined according to the pouring thickness of the concrete;
(IV) installation, fixation and correction of embedded part
Positioning and paying off the position of the goods shelf according to design requirements, and determining the installation position of the embedded part; the single embedded part is temporarily supported and fixed by using two bolts with turnbuckles and lower iron pads, and is initially adjusted to a designed elevation, the error of the elevation is allowed to be within 5mm, and the deviation of the central position of the embedded part is controlled to be within 2 mm;
after the embedded parts in each construction section are installed, adopting two threaded steel bars with the diameter of 20 to connect all the embedded parts vertically and horizontally to form a fixed whole;
then, re-correcting each embedded part, and performing elevation fine adjustment through the turnbuckle to ensure that the elevation deviation of each embedded part is controlled within 2 mm;
(V) concrete pouring
1, concrete pouring adopts a pump pipe erecting mode, and the pump pipe is firmly erected and is not in disturbing contact with the embedded part and the connecting steel bar;
2, arranging full-time installation personnel to carry out synchronous and whole-process side-station supervision when concrete is cast and tamped;
3, strictly adopting layered pouring for concrete, and avoiding impacting the embedded part and the connecting steel bar when pumping the concrete for feeding so as to ensure that the embedded part is positioned correctly without any disturbance phenomenon;
(VI) acceptance and handover
Marking an axis and an elevation on each embedded part, checking and accepting the embedded parts one by the supervision and design installation unit, making written checking and accepting and handing-over records, and making temporary protection measures for the embedded parts when the construction period is long and the embedded parts cannot be handed over immediately.
CN201911218986.9A 2019-12-03 2019-12-03 Ultrahigh-precision rapid construction process for ground intensive embedded parts of large-area cold storage Pending CN111058644A (en)

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