CN218462537U - Secondary structure prefabricated part - Google Patents

Abstract

The utility model discloses a secondary structure prefabricated part, which comprises an embedded part, wherein the embedded part is an embedded steel bar or an embedded PVC pipe, the embedded part is placed in an assembled mould, and concrete is poured outside the embedded part in the assembled mould; one end or two ends of the embedded steel bar extend out of the die, and two ends of the embedded PVC pipe are located on the outer side of the die. The construction method of the secondary structure prefabricated member comprises the steps of manufacturing and installing a mold → embedding the steel bar 2/PVC pipe → painting a release agent → pouring concrete, vibrating and curing → disassembling the mold → stacking, leading and transporting components. The utility model prefabricates the secondary structure concrete component, which is convenient and fast and meets the use requirement of the construction site; the construction is convenient and fast, the impression quality and the forming quality are good, the cost and the construction period are saved, the technology is advanced, and good social benefit and economic benefit can be obtained.

Description

Secondary structure prefabricated part

Technical Field

The utility model relates to a construction technical field especially relates to a secondary structure prefabricated component.

Background

In recent years, a large number of policies and standards are issued by national relevant departments and local industry governing departments to vigorously popularize assembly type building construction, and because the assembly type building can realize factory production of the building industry, the assembly type building is a necessary trend for development of the building industry in the future. Since the country is popularized and used, the assembly type building has the advantages of being fast in construction speed, good in appearance quality and forming quality, convenient to construct, good in integrity, energy-saving, environment-friendly and the like. However, the prefabricated building is still in the development stage, the existing prefabricated member factory is extremely deficient, the price of the prefabricated member is expensive, the cost of the prefabricated building is too high, and the prefabricated building is not suitable for all projects due to the control of investment targets by owners in many times; however, in order to comply with the development of the times, the traditional construction site needs to be advanced with times, prefabricated parts are actively popularized and used, and the development of nomadic PC parts is promoted.

According to the relevant standards and regulations of the main department of the industry in the country and the location of the project, design drawings are combined, in the construction process of the secondary structure masonry, members such as windowsills, electric boxes and air conditioner holes need to be constructed by adopting concrete, the wall body is constructed by the masonry, when two materials made of different materials are alternately constructed, discontinuity of construction can be caused, or the wall body is constructed in advance, and grooving (hole) processing is carried out at the later stage, so that the attractiveness of the wall body is influenced, material waste can be caused, even the quality consciousness of workers is low, the construction process is inverted, and the engineering quality is influenced. Therefore, it is necessary to improve the construction speed and the construction quality while satisfying the construction requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a secondary structure prefabricated part to solve the problems existing in the prior art, the construction method has wide applicability in the secondary structure construction, and the principle of the construction method is clear and simple; in order to facilitate the construction of the secondary structure masonry and reduce the phenomena of secondary building, slotting, holing and the like of the wall body, the secondary structure concrete component is prefabricated, so that the construction method is convenient and quick, and the use requirement of a construction site is met; compared with the traditional secondary structure masonry construction process, the construction method of the secondary structure windowsill, electric box and air conditioner opening prefabricating system is convenient and quick in construction, good in impression quality and forming quality, cost and construction period are saved, the technology is advanced, and good social benefit and economic benefit can be obtained.

In order to achieve the above purpose, the utility model provides a following scheme: the utility model provides a secondary structure prefabricated part, which comprises an embedded part, wherein the embedded part is an embedded steel bar or an embedded PVC pipe, the embedded part is placed in an assembled mould, and concrete is poured outside the embedded part in the assembled mould; when the embedded part is an embedded steel bar, one end or two ends of the embedded steel bar extend out of the die, and when the embedded part is an embedded PVC pipe, two ends of the embedded PVC pipe are both positioned outside the die.

Preferably, when the prefabricated component is a prefabricated windowsill component, the embedded part adopts embedded steel bars, and concrete at the extending end of the embedded steel bars is a rough surface.

Preferably, when the prefabricated part is a prefabricated air conditioner hole opening part, the embedded part is an embedded PVC pipe, the embedded PVC pipe is arranged in a mode that the inner part is high and the outer part is low, and one end of the embedded PVC pipe, which is positioned on the inner side of the building, is higher than one end of the embedded PVC pipe, which is positioned on the outer side of the building.

Preferably, the height difference of one end of the embedded PVC pipe positioned on the inner side of the building compared with one end of the embedded PVC pipe positioned on the outer side of the building is 2cm.

A construction method of a secondary structure prefabricated part is applied to the secondary structure prefabricated part and comprises the following steps:

1) Manufacturing and assembling a die according to a design drawing;

2) Placing embedded steel bars or embedded PVC pipes in the assembled mould;

3) Coating a release agent in the mold;

4) Pouring concrete on the outer side of the embedded steel bar or the embedded PVC pipe, and vibrating and curing the poured concrete;

5) Removing the mold after the prefabricated part is formed;

6) Uniformly stacking, picking up and transporting the prepared prefabricated parts;

7) When the wall body is built to the installation position of the prefabricated part, the prepared prefabricated part is positioned and installed, and then the surrounding building body is built.

Preferably, when the prefabricated component is a prefabricated windowsill component, embedded steel bars are placed in the assembled mould in the step 2), and the steel bars are configured according to the quantity and the size of the total specification of the drawing structural design; the overhanging end of the embedded steel bar of the prefabricated windowsill component needs to be rough.

Preferably, when the prefabricated part is an air-conditioning hole component, the pre-buried PVC pipe is placed in the assembled mould in the step 2), and the PVC pipe is configured according to the diameter required by the general description of the drawing structural design; the embedded PVC pipe is arranged in a mode that the inner part is high and the outer part is low, and the height difference between one end of the embedded PVC pipe positioned on the inner side of the building and the other end of the embedded PVC pipe positioned on the outer side of the building is 2cm; meanwhile, the sizes of the two ends of the embedded PVC pipe can be reserved.

Preferably, in the step 4), after the vibrating, a film is laid on the surface of the poured concrete and is periodically maintained.

The utility model discloses following beneficial technological effect has been gained for prior art:

1. the forming quality of the component is good: the construction method adopts factory centralized prefabrication processing, and the components can be used and transported after being inspected to be qualified, so that the forming quality of the prefabricated components can be ensured to a great extent, and the quality defects are reduced;

2. the construction speed is high: through the design deepening of early stage, prefabricate the component in advance, carry out the synchronous transportation along with the building block upstairs progress, install in step during wall construction, can not make to build by laying bricks or stones work and take place to be interrupted, construction convenience is swift.

3. The quality problem is reduced: the window board is required to be provided with a part, the wall-in length is required to be met according to design and related requirements, and cast-in-place is required to be adopted when the wall-in length requirement is not met. In the traditional construction process, the cast-in-place construction speed is low, the cast-in-place reinforcement is inconvenient, the finished product quality is poor, the part of the window board needing to be cast in place is usually the part of an outer wall window, and the process inversion exists because masonry personnel can construct conveniently, so that the part close to a concrete wall has no wall-entering length or has the phenomenon that the upper building block is suspended when the length of the concrete wall is reserved. Such phenomena have great quality problems, and outer wall leakage is easy to generate to influence delivery. By adopting the secondary structure system construction method, the wall-entering length can be well ensured, the primary building of the wall body is not influenced, the part close to the concrete wall is cast in situ, the design requirement is met, and the social benefit is remarkable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a structural diagram of a prefabricated air conditioner hole component;

FIG. 2 is a block diagram of a prefabricated sill member;

FIG. 3 is a block diagram of a prefabricated electrical box component;

FIG. 4 is a flow chart of construction of a secondary structure prefabricated part;

wherein, 1, pre-burying a PVC pipe; 2, embedding steel bars in advance; 3 rough surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a secondary structure prefabricated part to solve the problems existing in the prior art, the construction method has wide applicability in the secondary structure construction, and the principle of the construction method is clear and simple; in order to facilitate the construction of the secondary structure masonry and reduce the phenomena of secondary building, slotting, holing and the like of the wall body, the secondary structure concrete component is prefabricated, so that the construction method is convenient and quick, and the use requirement of a construction site is met; compared with the traditional secondary structure masonry construction process, the construction method of the secondary structure windowsill, the electric box and the air conditioner opening prefabricating system is convenient and quick in construction, good in impression quality and forming quality, capable of saving cost and construction period, advanced in technology and capable of obtaining good social benefits and economic benefits.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 to 4, the present embodiment provides a prefabricated secondary structural member suitable for the construction of a small-sized secondary structural concrete member in various environments.

Taking the prefabricated components of the windowsill, the electric box and the air-conditioning opening with the secondary structure as an example, the construction method process principle of the prefabricated system is as follows: deepening a secondary structure windowsill, an electric box and an air conditioner opening according to drawing deepening design, setting a small secondary structure component processing field at a construction site according to a factory production process, manufacturing a shaping mold according to deepening requirements, selecting the field at the construction site to perform centralized manufacturing, centralized stacking, centralized reception and centralized distribution, and performing synchronous installation during construction of secondary structure brickworks.

Before specific construction, the construction drawings, related design data and design basis, construction acceptance specifications and related technical regulations need to be familiar; determining the quantity and the size of the secondary structure windowsill, the electric box and the air conditioner opening according to a construction deepening drawing; and then carrying out preliminary modeling by adopting a BIM technology.

The manufacturing of prefabricated parts of the windowsill, the electric box and the air conditioner opening with the secondary structure comprises the following steps:

1 Process flow for preparation

Mold manufacturing and installation → embedded steel bar 2/PVC pipe → mold release agent painting → concrete pouring, vibrating, maintenance → mold removal → component stacking, collaring and transportation

2 die making and mounting

According to the deepening design drawing, the prefabricated member steel mould is manufactured in batches and assembled (the overhanging end of the prefabricated windowsill member steel bar needs to be provided with a rough surface 3 so as to be firmly combined with a secondary pouring part).

3 pre-buried steel bar/PVC pipe

The method is characterized in that the required quantity and the size of reinforcing steel bars are configured according to the drawing structural design general description (an air conditioner opening needs to embed the PVC pipe 1 according to the required size of the water supply and drainage related drawing, the embedded pipe needs to be high inside and low outside and has the height difference of 2cm, meanwhile, the embedded PVC pipe 1 can be reserved with proper size according to the inner and outer wall method, and the working procedures are reduced during the subsequent inner and outer wall construction).

4 concrete pouring, vibrating and curing

Pouring concrete, vibrating with short steel bar or other apparatus until it is dense, spreading film on the concrete surface and maintaining regularly.

5 form removal

And after the strength of the precast concrete member meets the requirement, removing the mold, and stacking the mold at a specified position.

6-member piling, receiving and transporting

And (4) stacking the prefabricated parts which are manufactured and molded in a centralized manner, managing by a specially-assigned person, and accurately receiving and transporting the prefabricated parts to corresponding positions of floors by a construction team.

After the prefabricated part with the secondary structure is prepared, the preparation stage of the secondary structure is started:

1. floor cleaning

Building materials, building slag and dust on the floor surface are cleaned before the secondary structure is constructed.

2. Positioning pay-off

The positioning and paying-off of the secondary structure requires paying-off of structural columns, frames, small door stacks and other members except for conventional reversed ridges and contour lines, control lines, opening lines and the like of walls, and the positioning of the structural columns, the frames, the small door stacks and the like also needs to be marked obviously.

3. Bar planting

And (5) carrying out bar planting work on the positions of the secondary structures, which need to be planted with the bars, according to the standard requirements.

4. Prefabricated component upstairs and brickwork upstairs

According to the job site condition, rationally arrange prefabricated component and building block upstairs to place in corresponding position, reduce and transport.

Mounting the secondary structure:

1. wall masonry

And building the wall body according to the design requirements.

2. Prefabricated part installation location

When the wall body is built to the windowsill part, the prefabricated windowsill plate is positioned and installed, and the upper masonry is built after the position of the windowsill plate is determined to be correct; when the prefabricated member is built to the air-conditioning hole, the prefabricated member in the air-conditioning hole is positioned and installed by using an instrument, the internal and external relations of the prefabricated member during installation need to be ensured, and the height difference is more than 2cm. When the position of the electric box is built, the position of the electric box needs to be reserved according to the specification of a drawing, when the size of a hole is larger than 300mm, the prefabricated lintel is installed, the prefabricated lintel is reserved with a pipe embedding position, and secondary grooving of the lintel can be avoided.

After masonry is built for 14 days, oblique masonry can be built, and the next procedure can be performed after supervision and acceptance of Party A.

The requirements relating to the concrete used for the secondary structural prefabricated elements are:

the commercial concrete 1 has the factory pass certificate, the cement, aggregate, admixture and the like used by the concrete must meet the standard and relevant regulations, and the factory pass certificate and relevant test reports are checked before the concrete is used.

And 2, the curing and construction joint treatment of the concrete must meet the requirements of construction quality acceptance specifications.

3 sampling, manufacturing, maintaining and testing the concrete strength test block to meet the requirements.

4, the concrete is compacted by vibration, and the defects of honeycombs, holes, exposed ribs, gaps, slag inclusion and the like cannot be caused.

5, steel bars, templates and clay workers work with shifts, and problems are found and solved in time.

6 prefabricated component centralized processing factory should be provided with rain-proof drainage measure, must not influence the concrete quality because of reasons such as rain.

7, special plastering personnel are required to direct pouring during pouring, so that the problem of 'flowers scattering by a celestial girl' is avoided, and cleaning personnel and plastering personnel are well distributed.

The relevant requirements on the embedded steel bars 2 in the secondary structure prefabricated part are as follows:

1, when entering the field, the steel bars are according to the current national standard, part 1 of the steel for reinforced concrete: hot-rolled plain round steel bar GB/T1499.1-2017 and reinforced concrete steel part 2: the test piece is extracted for mechanical property inspection according to the regulations of hot-rolled ribbed steel bars GB/T1499.2-2018 and the like, and the quality of the test piece is required to meet the regulations of relevant standards. And (4) determining the inspection quantity according to the sampling inspection scheme of the entered batch and the product. The inspection method comprises the steps of inspecting product quality certificates, delivery inspection reports and entry reinspection reports.

2, for the frame structure with the requirement of seismic fortification, the strength of the longitudinal stress steel bar of the frame structure meets the design requirement; when no specific design requirement exists, for a secondary earthquake-proof grade, the measured value of the strength obtained by inspection accords with the following regulation that the ratio of the measured value of the tensile strength to the measured value of the yield strength of the steel bar is not less than 1.25; the ratio of the measured yield strength value to the standard strength value of the steel bar should not be more than 1.3. And (4) determining the inspection quantity according to the sampling inspection scheme of the incoming batches and products. The inspection method comprises the step of inspecting an entrance review report.

3 when the phenomena of brittle failure, poor welding performance or remarkable abnormal mechanical property and the like of the steel bars are found, the steel bars in the batch are subjected to chemical component inspection or other special inspection. The test method comprises inspecting special test reports such as chemical components.

4, the steel bar should be flat and not damaged, and the surface of the steel bar should not have cracks, oil stains, granular or flaky old rust. The inspection quantity is the total inspection during approach and before use. And (5) inspection method, observation.

The related requirements regarding the embedded PVC pipe 1 of the secondary structural prefabricated element are:

1, data inspection: the products entering the field must have a product quality inspection report (needing to be provided with a factory official seal which must be a red seal) issued by a national approval institution, and a product qualification certificate original document; if there is no inspection report and no product certificate, the material is rejected.

2, physical examination:

1) The code spraying on the pipe is clear, and the brand, specification and model of the product shown by the code spraying are consistent with the order requirement;

2) The pipe fitting is light-tight, the inner wall and the outer wall of the pipe fitting are smooth and flat, the wall thickness is uniform, no bubble, scratch and other surface defects influencing the performance exist, and the color and luster are consistent; the end opening of the pipe is smooth;

3) The pipe fitting should be complete, without defect and deformation, and the die seam and the sprue should be smooth and have no cracks;

4) The corresponding pipe fitting is well matched;

3 size inspection

1) Wall thickness is measured on the selected measured section at least 6 points at equal intervals along the circumferential direction, and the arithmetic mean value is calculated by using the measured values; the deviation of the limit size is detailed in related national standards of PVC, PE and PPR;

2) PVC, length not allowing negative deviation; the limit deviation of the length of the pipe is between 0.4 percent and 0.2 percent.

Remarking: the types of plastic pipe fittings are various, and each type of pipe fitting needs a corresponding detection report instead of a general detection report. So, it is necessary to check whether the detection report is complete or not during the acceptance check.

In addition, the air conditioner prefabricated block needs to be manufactured according to the modulus of the building materials of the related wall, and the masonry is not cut as much as possible through advanced deepening design. The PVC pipe is required to be placed according to design requirements in the manufacturing process of the air conditioner prefabricated block, and the consideration is comprehensive, so that the PVC pipe can reach the delivery length at one time, and the later cutting or the supplement of the length is avoided; and need look for the slope to the PVC pipe, satisfy interior height outside low, 2cm of difference in height requirement, when installing the air conditioner prefabricated section need strictly control the inside and outside and upper and lower face of prefabricated section, forbid the installation mistake strictly to lead to the refluence phenomenon. The precast electric box lintel needs to meet the requirement of a design drawing on the height of the lintel, the thickness of the lintel is the same as the wall thickness, and the length of the precast lintel extending into a masonry wall needs to meet the requirement of design and related specifications; the gap of the precast lintel of the electric box is required to be tested deeply in advance, a reasonable value is determined, and the steel bar in the precast lintel is required to be bent at the gap to ensure the thickness of the steel bar protection layer. The prefabricated windowsill lintel manufacturing length needs to meet the requirements of relevant design and specification on the wall-entering length, the prefabricated lintel needs to be provided with a steel bar at the contact surface with cast-in-place, and the contact surface needs to be manufactured into a rough surface 3. The shear wall surface needs to be embedded with steel bars, and the shear wall surface needs to be bound and lapped with the exposed steel bars of the prefabricated lintel, and the lapping length is not less than the LAE. The stacking of the prefabricated parts requires the upper cushion and the lower cover, so that the quality of finished products is ensured; when the strength of the concrete reaches over 75 percent, the concrete can be carried, finished product protection should be noticed during the carrying and upstairs going process, and collision is strictly prohibited. Prefabricated parts with quality defects of lacking edges and falling corners, cracking, cellular pitted surface and the like are strictly forbidden to go upstairs for use.

The secondary structure system construction method has the advantages that:

1.1 the member has good molding quality: the construction method adopts factory centralized prefabrication processing, and the components can be taken and transported after being inspected to be qualified, so that the forming quality of the prefabricated components can be ensured to a great extent, and the quality defects are reduced;

1.2 the construction speed is fast: through the design deepening of early stage, prefabricate the component in advance, carry out the transportation in step along with the building block progress upstairs, install in step during wall body construction, can not make to build by laying bricks or stones work and take place to be interrupted, construction convenience is swift.

1.3 reducing quality problems: the window board is required to be provided with a part, the wall-in length is required to be met according to design and related requirements, and cast-in-place is required to be adopted when the wall-in length requirement is not met. In the traditional construction process, the cast-in-place construction speed is low, the cast-in-place reinforcement is inconvenient, the finished product quality is poor, the part of a window board needing to be cast in place is usually the part of an outer wall window, and the process inversion exists because masonry personnel can construct conveniently, so that the part close to a concrete wall does not have the wall-entering length or the upper building block is suspended due to the length of the reserved wall. Such phenomena have great quality problems, and outer wall leakage is easy to generate to influence delivery. By adopting the secondary structure system construction method, the wall-entering length can be well ensured, the one-time masonry of the wall body is not influenced, the part close to the concrete wall is cast in situ, the design requirement is met, and the social benefit is remarkable.

2 economic benefits

At a speed of 600m ² The left standard floor and the right standard floor have 6 households per floor, the floor height is 2.9m, the floor is 30 floors in total, and the project is composed of 10 similar buildings in total;

6 strong electric boxes and 6 weak electric boxes are arranged on each layer, and a groove is formed in the concrete for 20 yuan/m; 30 air-conditioning holes are required to be drilled on the masonry wall, the price of each hole is calculated according to 50 yuan, through inspection, the air-conditioning hole is a DN80PVC pipe, the sectional area of the air-conditioning hole is calculated according to 0.00502m2, and the size of the prefabricated block is considered according to 0.15 x 0.2; the wall-in length does not meet the traditional prefabricated windowsill conditions and is calculated according to 12, and the C20 fine-stone concrete for manufacturing the member is calculated according to 500 yuan/cube; the construction period of the masonry is calculated by one layer in 2 days according to 400 yuan/day by an installer, namely 150 working days by the installer are required, and in order to facilitate calculation, the labor cost and the material cost for repairing the traditional process are offset from the labor cost for manufacturing the member in the method.

Combining the above data:

1. relative system prefabricated electronic box construction method, the extra expense that traditional prefabricated electronic box lintel construction produced:

(1) slotting cost: 0.12 × 12 × 30 × 10 × 20=8640 yuan

(2) Grooving wastes concrete cost: 0.12 × 0.05 × 0.2 × 30 × 10 × 12 × 500 =2160yuan

2. Comparing the air conditioner prefabricated block with the air conditioner hole rear opening economic benefit:

the post-holing process generates cost: 50 × 30 × 10=450000 yuan

The prefabrication method of the secondary structure air-conditioning hole system generates cost: (0.15 x 0.2-0.00502 x 0.2) 30 x 10 x 30 x 500+30 x 10/2 x 400=75732 yuan

Namely, the economic benefit is different: 450000-75732=37.4268 ten thousand yuan

3. The prefabricated window board is mainly convenient for continuous masonry construction, and the economic benefit is not calculated at all.

In conclusion, the method comprises the following steps: the construction method for the prefabricated system of the secondary structure windowsill, the electric box and the air-conditioning hole saves the cost by about 37.4268+0.864+0.216=38.5008 ten thousand yuan; meanwhile, the forming quality of the prefabricated part can be well guaranteed on the basis of saving cost, and the economic benefit is remarkable.

Example one

The method comprises the steps of carrying out investment construction by Guilin Dalong investment limited companies, wherein the projects are located at the intersection of the Yangjiang north road of the Guilin city peak area and the culture road, the DongTanhua river, the underground 1 layer, the ground 3-9 layers, and the total building area 121602.94, and is a reinforced concrete frame shear wall structure.

According to statistics: the number of the items is about 2000 strong and weak electric boxes and about 5000 air-conditioning holes. In combination with the relevant data collected by the 10.0.2 economic benefit analysis, the cost of the project is saved:

(1) the prefabricated lintel of the electric box is saved: 0.12 × 20 × 2000+0.12 × 0.05 × 0.2 × 500 × 2000 yuan

(2) The air conditioner hole prefabricated section is expected to save: 50 × 5000- (0.15 × 0.2-0.00502 × 0.2) × 500 × 5000-400 × 30 × 5/2=211 yuan

In conclusion: namely, the project is expected to save the cost by about 0.6+21.126=21.726 ten thousand yuan.

Example two

The Guilin city Qin Tan 'Dalongwan inhabitation type' social support service innovation demonstration project (the third phase: guilin city Qin Tan 'Dalongwan' inhabitation type 'social support service innovation demonstration project B1-9# blocks G18-G23 #, G25-G31 # building and underground public parking lot as well as B1-10 blocks T1-T3 # and T5-T7 # building project; the fourth phase: guilin city Qin Tan' Dalongwan 'inhabitation type' social support service innovation demonstration project B1-10# blocks T8-T13 #, T15-T19, V1-V3 #, V5-V6 #, B1-B2 # building and B1# B2# building project) is constructed by Guilin Dalongyuan, the project is located at the intersection of the Yangtze river road and the Yangtze road of the Guilin city, the Taiwan river access, the Taiwan adjacent thereto, the peach tree floor, the basement # B1# B2# building and the reinforcing steel bar building construction.

According to statistics: the total number of the items is about 1700, and the number of the air-conditioning holes is about 3000. In combination with the relevant data collected by the 10.0.2 economic benefit analysis, the cost of the project is saved:

(1) the prefabricated lintel of electronic box is practiced thrift: 0.12 × 20 × 1700+0.12 × 0.05 × 0.2 × 500 × 1700 yuan 5100 member

(2) The air conditioner hole prefabricated section is expected to save: 50 × 3000- (0.15 × 0.2-0.00502 × 0.2) × 500 × 3000-400 × 30 × 5/2=114 yuan

In conclusion: namely, the project is expected to save the cost by about 0.51+11.4756=11.99 ten thousand yuan.

EXAMPLE III

The project of modern financial industry city of mangrove in north sea [ one mark section: north sea international finance center # 2, # 3 commercial office buildings and basements; two marking sections: north sea International finance center No. 4-10 commercial business building; three marking sections: the north sea international finance center 12# commercial building (business presentation center) is constructed by investment of north sea Yu City real estate development Limited company, is located in northern sea city in the west of the avenue of the south and south beads, has 2 floors underground, has 2 to 31 floors above the ground, has a total building area of 142036.23m2, is a shear wall/frame structure, and has a contract period of 2020, 03 and 15 days-2024, 05 and 30 days.

According to statistics: the total number of the strong and weak electric boxes is 3032, and the number of the air-conditioning holes is 8080. In combination with the relevant data collected by the 10.0.2 economic benefit analysis, the cost is saved:

(1) the prefabricated lintel of electronic box is practiced thrift: 0.12 x 20 x 3032+0.12 x 0.05 x 0.2 x 500 x 3032=9096 yuan

(2) The air conditioner hole prefabricated section is expected to save: 50 × 8080- (0.15 × 0.2-0.00502 × 0.2) × 500 × 8080-400 × 30 × 10/2=32 9876.2 yuan

In conclusion: namely, the project is expected to save the cost by about 0.91+32.99=33.90 ten thousand yuan.

The utility model provides a secondary structure prefabricated component, prefabricated component adopt the industrialization production mode, adopt regularization mould to produce in unison in concentrated place, make the shaping quality of component can obtain fine assurance, reduction engineering quality defect that can be fine, and its achievement on the material saving resource also very is showing. The utility model discloses combine assembly type structure's advantage, carry out assembly type structure's development spirit, the application summary improvement through a plurality of projects has concluded a series of prefabricated component construction method, has finally formed the construction method of a secondary structure windowsill, electronic box, the prefabricated system in air conditioner entrance to a cave.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (4)

1. A secondary structure prefabricated component which is characterized in that: the embedded part is an embedded steel bar or an embedded PVC pipe, and is placed in an assembled mould, and concrete is poured outside the embedded part in the assembled mould; when the embedded part is an embedded steel bar, one end or two ends of the embedded steel bar extend out of the die; when the embedded part is an embedded PVC pipe, two ends of the embedded PVC pipe are both positioned outside the die.

2. The secondary structural precast member according to claim 1, wherein: when the prefabricated component is a prefabricated windowsill component, the embedded part adopts embedded steel bars, and concrete at the extending ends of the embedded steel bars is a rough surface.

3. The secondary structural prefabricated member according to claim 1, wherein: when the prefabricated part is a prefabricated air conditioner hole opening part, the embedded part is an embedded PVC pipe, the embedded PVC pipe is arranged in a high-outside mode, and one end, located on the inner side of the building, of the embedded PVC pipe is higher than one end, located on the outer side of the building.

4. The secondary structural prefabricated member according to claim 3, wherein: the height difference between one end of the embedded PVC pipe, which is positioned at the inner side of the building, and the other end of the embedded PVC pipe, which is positioned at the outer side of the building, is 2cm.

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