CN103603460A - Embedded prefabricated concrete external wall panel and hoisting method thereof - Google Patents

Embedded prefabricated concrete external wall panel and hoisting method thereof Download PDF

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Publication number
CN103603460A
CN103603460A CN201310597707.0A CN201310597707A CN103603460A CN 103603460 A CN103603460 A CN 103603460A CN 201310597707 A CN201310597707 A CN 201310597707A CN 103603460 A CN103603460 A CN 103603460A
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panel
precast concrete
concrete external
fascia
external
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CN201310597707.0A
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Chinese (zh)
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CN103603460B (en
Inventor
高兴夫
叶启军
胡康虎
鲁嘉
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浙江省建设投资集团有限公司
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Abstract

The invention relates to an embedded prefabricated concrete external wall panel and a hoisting method thereof, belonging to the technical field of building construction. The embedded prefabricated concrete external wall panel comprises an external wall panel body, wherein step-like structures are arranged on two side faces of the external wall panel body, a set of positioning holes are formed in the bottom of the external wall panel main body, and a set of hoisting rings are arranged on the inner surface of the external wall panel body. According to the external wall panel provided by the invention, the external wall panel is hoisted through the hoisting rings on the inner surface of the external wall panel, and the external wall panel is always hoisted with a gradient being 600-700 degrees formed by the prefabricated concrete external wall panel and the horizontal plane. The hoisting method comprises the following steps: firstly, fixing the lower end of the wall panel on a notch of a shaped beam of a floor; then, slowly increasing the gradient to connect the upper end of the external wall panel with the outer side face of corresponding shaped beam; firmly tightening the upper part of the external wall panel and a main body structure of a building by a pull rope through turn buckles when the external wall panel is close; loosening a hanging tool in the middle and fastening the turn buckles to lean against the wall panel on the outer side face of an upper beam after the hanging tool is pulled out of the wall; and then, fixing. The external wall panel is simple in structure, convenient and safe to operate in the construction operation, good in stability, good in visual effect of appearance and convenient to disassemble and assemble and maintain.

Description

A kind of pointing formula precast concrete external wall panel and hanging method thereof

Technical field

The invention belongs to technical field of building construction, be specifically related to a kind of simple in structure, thermal and insulating performance and antiseep precast concrete external wall panel and hanging method thereof effective and easy to maintenance.

Background technology

Precast assembly architecture construction is the mainstream development direction of building trade environment protecting and power-saving emission-reduction technology.At present, precast assembly concrete external wall panel building is also in replacing the design and construction method of constructing with building body (load-bearing) structure timed delivery, be that major structure of construction has been constructed after every floor aspect and needed to stop over, after putting in place, side fascia lifting could continue construction, and adopt poured in place concrete to form integral body with major structure of construction, this architectural design and construction method has restricted building structure construction speed, also directly cause external wall plate to be difficult to carry out necessary replacing after using the several years, wound has been lost precast assembly rate of progress of the construction characteristic faster, also wound has been lost the superiority of being convenient to change by piece concrete external wall panel, building life cycle whole economic efficiency and environmental protection and energy saving index have been reduced.At present, the needed architectural construction design of displacement side fascia is not also considered in architectural design, the side fascia hanging method of employing vertical plate hoisting technology is not suitable for the lifting construction of pointing formula side fascia, and the existing architectural construction design relevant with precast wall panel and side fascia hanging method need further to be innovated.

Summary of the invention

For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of simple in structure, thermal and insulating performance and antiseep precast concrete external wall panel effective and easy to maintenance and the hanging method in the construction of building storey pointing formula side fascia thereof.

Described a kind of prefabricated pointing formula concrete external wall panel, comprise side fascia body, it is characterized in that described side fascia body two sides are set to terraced structure, side fascia body bottom arranges one group of locating hole, and side fascia body internal surface arranges one group of dismountable suspension ring.

Described a kind of pointing formula precast concrete external wall panel, is characterized in that terraced structure is lateral type, and the width of this external surface of side fascia is greater than the width of its inner surface, and both stand out positions form step, and relatively wide lateral surface is provided with rubber strip.

Described a kind of pointing formula precast concrete external wall panel, is characterized in that four corner angle of the side fascia body of described side fascia body are set to fillet.

Described a kind of pointing formula precast concrete external wall panel, it is characterized in that described suspension ring are that upper, middle and lower three rows be arranged in parallel, upper and lower two array pitch are respectively 10-50cm from side fascia bodies top, bottom, and the distance between a middle row and upper row is 1:3-5 with the ratio of the total distance of two rows.

Described a kind of pointing formula precast concrete external wall panel, the suspension ring number that it is characterized in that every row is 2-10.

Described a kind of pointing formula precast concrete external wall panel, is characterized in that being provided for respectively fixing on described side fascia body two sides reinforcing bar, latch or the pin hole of this side fascia.

The hanging method of described pointing formula precast concrete external wall panel in building storey construction, is characterized in that comprising the steps:

1) the floor beam being connected respectively with precast concrete external wall panel upper and lower faces is set as to profiled beam, on this profiled beam, breach is set, described breach size matches with precast concrete external wall panel upper and lower faces thickness, on the corresponding breach being connected with precast concrete external wall panel, be provided with a registration reinforcing bar below, described spacer bars is corresponding one by one with locating hole, the outward-dipping setting of spacer bars, its angle of inclination is 5 0-10 0;

2), on the suspension ring that one of the stay cord on loop wheel machine is separately fixed in side fascia body internal surface, lower two rows are corresponding, make side fascia and horizontal plane form 60 0-75 0angle lifting, and precast concrete external wall panel is winched to the position that actual needs is installed;

3) constructor stands on the floor that precast concrete external wall panel is installed, by the stay cord tying up in advance on the suspension ring of arranging under side fascia body internal surface, adjust precast concrete external wall panel lower end position, it is shelved on connected profiled beam breach, and make to locate bar dowel and inject in corresponding locating hole, this stay cord is fixed on by flower basket bolt on the major structure of construction floor of precast concrete external wall panel place floor, then removes lower row's lifting rope;

4) continue operation loop wheel machine, haul on the lifting rope being connected with middle row's suspension ring and move, make side fascia body upper end slowly near connected profiled beam, when approaching soon this profiled beam, will tie up in advance the stay cord of arranging in side fascia body internal surface on suspension ring and be fixed on by flower basket bolt on the major structure of construction of precast concrete external wall panel place floor and in temporary fixed state;

5) constructor unclamps middle part lifting rope after outside lifting rope is pulled out wall, screwing flower basket bolt makes side fascia body top snap in the breach on profiled beam, make wallboard abut against the lateral surface of upper strata profiled beam breach and in temporary fixed state, subsequently wallboard and existing structure body adjusted and fixed;

6) dismantle stay cord and suspension ring, on connecting sewing pointing heat insulating material, be coated with fluid sealant and weather-resistant glue, increase thermal insulation, antiseep and the sound insulation property of precast concrete external wall panel seam crossing, increase the durability of wallboard and the overall aesthetics of metope.

The hanging method of described pointing formula precast concrete external wall panel in building storey construction, is characterized in that four angles of described side fascia body arrange fillet.

The hanging method of described pointing formula precast concrete external wall panel in building storey construction, is characterized in that in step 4), side fascia body upper end slowly refers to that near connected profiled beam with pointing formula precast concrete external wall panel low side, shelving a circle of position heart is rotated lifting.

The hanging method of described pointing formula precast concrete external wall panel in building storey construction, the angle that refers to precast concrete external wall panel and horizontal plane while it is characterized in that approaching soon this profiled beam in step 4) be 75-85 ° or refer to pointing formula precast concrete external wall panel upper end and this profiled beam between spacing when meeting suspension hook and pulling out the minimum range outside wall.

The hanging method of described pointing formula precast concrete external wall panel in building storey construction, is characterized in that pulling out in step 5) after lifting rope can use auxiliary steel wire rope temporary fixed.

The present invention, by adopting above-mentioned technology, compared with prior art, has following beneficial effect:

1) the present invention adopts special-shaped beam design by the building storey surface layer side bar being connected with precast concrete external wall panel, corresponding breach is set, and on the breach of the special-shaped beam with being connected below precast concrete external wall panel pre-buried outward-dipping location bar dowel, and the outward-dipping angle of this location bar dowel is defined as to 5 0-10 0, facilitate precast concrete external wall panel to hang oneself and set position and fixedly precast concrete external wall panel is installed at existing building side bar, the design of breach meets better the paving of precast wall panel mount pad slurry and fills out and prevent exterior wall leakage requirement;

2) the present invention arranges lateral step by the two sides of precast concrete external wall panel, facilitate precast concrete external wall panel meet in the structural pointing formula lifting of existing building and install, reduce precast concrete external wall panel lifting and shelve difficulty, minimizing produces excessive frictional force in precast concrete external wall panel rotary hoisting process, guarantees lifting smoothly; And on wider surface, precast concrete external wall panel two sides, rubber strip is set, be convenient to form airtight seam with members such as contiguous prefabricated concrete external wall panel or cylinders, facilitate the inside and outside fill insulant material of seam and weather-resistant glue sealing, improve thermal and insulating performance and antiseep effect that building energy conservation requires;

3) the present invention's following four corner angle on precast concrete external wall panel adopt the design of small circular fillet, avoid that precast concrete external wall panel end opening is shelved, corner is damaged in rotary hoisting process, affects outer facade attractive in appearance; Two jiaos of tops arrange fillet and are convenient to guarantee that wallboard can pack into smoothly in the breach of profiled beam in rotary hoisting process, while having avoided installing because of right angle, can destroy breach corner etc., affect outward appearance and installation quality, facilitate the interior fill insulant material of plate seam and play glue, increase thermal insulation, antiseep and the sound insulation property of precast concrete external wall panel seam crossing, increase the durability of wallboard and the overall aesthetics of metope;

4) the present invention, at the pre-buried and suspension ring in precast concrete external wall panel Inner surface, is convenient to setting and is connected with the lifting rope on loop wheel machine, makes precast concrete external wall panel form 60 according to wallboard face and horizontal plane 0~ 75 0gradient lifting, make precast concrete external wall panel center of gravity in hoisting process outside facade, avoid the member impacts such as hoisting rig and superstructure side bar, affect lifting construction, be also convenient to be fixedly connected with existed building side bar and other members;

5) by the lifting rope of loop wheel machine and precast concrete external wall panel Inner surface, pre-buried and suspension ring are connected in the present invention, and the inner surface by the precast concrete external wall panel that plays lifts, and keeps precast concrete external wall panel and horizontal plane formation 60 in hoisting process always 0-75 0gradient lifting, in hoisting process, side fascia center of gravity remains on outside facade, at wallboard end opening, be first shelved on floor side bar breach, after on building storey side bar, the pre-buried location bar dowel locating hole reserved with wallboard end opening aimed at, the wire rope that employing is got ready is fixed by wallboard bottom suspension ring and floor, unclamp the suspension hook on the suspension ring of wallboard bottom, utilizing with the lockset of middle part suspension ring snapping makes wallboard top near upper strata side bar slowly to rotate wallboard, during both about 100mm in gap, with flower basket bolt, suspension ring and floor anchorage will be arranged on side fascia, unclamp middle part suspender after outside suspender is pulled out wall, fastening flower basket bolt makes wallboard abut against upper strata beam lateral surface, wallboard and structure can be adjusted and fixed subsequently, the method is easy to operate, safety, good stability, and be convenient to dismounting and maintenance.

Accompanying drawing explanation

Fig. 1 is precast concrete external wall panel structural representation of the present invention;

Fig. 2 is lifting flowage structure schematic diagram of the present invention.

In figure: 1-rubber strip, 2-step, 3-side fascia body, 4-suspension ring, 5-locating hole.

The specific embodiment

Below in conjunction with Figure of description, the invention will be further described, but protection scope of the present invention is not limited in this.

As shown in Figure 1, precast concrete external wall panel of the present invention, be used for being arranged on and on building storey, form body of wall, it can be designed to corresponding size according to real size, can be set directly between two cylinders and form body of wall, also can be interconnected to constitute by several precast concrete external wall panels, it comprises side fascia body 3, described side fascia body 3 two sides are set to terraced structure, this terraced structure is lateral type, the width of side fascia body 3 external surfaces is greater than the width of its inner surface, both stand out positions form step 2, relatively wide lateral surface is provided with rubber strip 1, the setting of this rubber strip 1, be convenient to form airtight seam with members such as contiguous prefabricated concrete external wall panel or cylinders, facilitate the inside and outside fill insulant material of seam and weather-resistant glue sealing, improve thermal and insulating performance and antiseep effect that building energy conservation requires, described side fascia body 3 bottoms arrange one group of locating hole 5, location bar dowel is set on connected profiled beam, location bar dowel is corresponding one by one with locating hole 5, side fascia body 3 inner surfaces arrange one group of suspension ring 4, described suspension ring 4 are upper, in, lower three rows be arranged in parallel, on, lower two array pitch are from side fascia body 3 tops, bottom is respectively 10-50CM, distance between a middle row and upper row is 1:3-5 with the ratio of the total distance of two rows, limit this respective distance ratio, in hoisting process, to keep precast concrete external wall panel and horizontal plane to form 60 in order to guarantee always 0-75 0gradient lifting, improve safety and the operability of lifting, the every row's of the present invention suspension ring 4 numbers are 2-10, preferred number is 2-4, specifically fixed according to the width of this side fascia, the spacing of adjacent two suspension ring 4 is generally 1-2m.

In order to prevent in hoisting process, the rotation of precast concrete external wall panel brushes up against the profiled beam corner of floor, and the present invention arranges fillet by four corner angle of side fascia body 3.

For improve between precast concrete external wall panel or itself and cylinder between connectivity robustness, the present invention is except arranging the locating hole 5 corresponding with location bar dowel in side fascia body 3 bottoms, on can also its two sides, be provided for respectively fixing reinforcing bar, latch or the pin hole of this side fascia, and on another precast concrete external wall panel being connected with this side fascia or cylinder, opposite position arranges reinforcing bar, pin hole or latch, interconnects.

As shown in Figure 2, the suspension ring of the precast concrete external wall panel in the embodiment of the present invention have lower three rows in three, every row has 2 suspension ring, the spacing of adjacent two suspension ring 4 is generally 2m, on, lower two rows' suspension ring and top, distance from bottom is respectively 30CM, distance between a middle row and upper row is 1:3 with the ratio of the total distance of two rows, as required, the present invention adopts 4 cover lockset lifting rope liftings, long 2 covers of 2 covers are short, short lockset lifting rope respectively with wallboard middle part suspension ring snapping, long lockset lifting rope respectively with wallboard bottom suspension ring snapping, the hanging method of pointing formula precast concrete external wall panel in the present embodiment in building storey construction, comprise the steps:

1) the floor beam being connected respectively with precast concrete external wall panel upper and lower faces is set as to profiled beam, on this profiled beam, breach is set, described breach size matches with precast concrete external wall panel upper and lower faces thickness, on the corresponding breach being connected with precast concrete external wall panel, be provided with row's fixed sodium muscle below, described location bar dowel is corresponding one by one with locating hole 5, the outward-dipping setting of location bar dowel, its angle of inclination is 5 0-10 0;

2), on the suspension ring 4 that one of the stay cord on loop wheel machine is separately fixed in side fascia body 3 inner surfaces, lower two rows are corresponding, make side fascia and horizontal plane form 60 0-75 0angle lifting, and precast concrete external wall panel is winched to the position that actual needs is installed;

3) constructor stands on the floor that precast concrete external wall panel is installed, by the stay cord tying up in advance on the suspension ring 4 of arranging under side fascia body 3 inner surfaces, adjust precast concrete external wall panel lower end position, it is shelved on connected profiled beam breach, and make to locate bar dowel and inject in corresponding locating hole 5, this stay cord is fixed on by flower basket bolt on the major structure of construction floor of precast concrete external wall panel place floor, then removes lower row's lifting rope;

4) continue operation loop wheel machine, haul on the lifting rope being connected with middle row's suspension ring 4 and move, make side fascia body 3 upper ends slowly near connected profiled beam, when approaching soon this profiled beam, to tie up in advance the stay cord of arranging on side fascia body 3 inner surfaces on suspension ring 4 and be fixed on by flower basket bolt on the major structure of construction of precast concrete external wall panel place floor and in temporary fixed state, side fascia body 3 upper ends slowly refer to that near connected profiled beam with pointing formula precast concrete external wall panel low side, shelving a circle of position heart is rotated lifting, the angle that refers to precast concrete external wall panel and horizontal plane while approaching soon this profiled beam be 75-85 ° or refer to pointing formula precast concrete external wall panel upper end and this profiled beam between spacing when meeting suspension hook and pulling out the minimum range outside wall,

5) constructor unclamps middle part lifting rope after outside lifting rope is pulled out wall, screwing flower basket bolt makes side fascia body 3 tops snap in the breach on profiled beam, make wallboard abut against the lateral surface of upper strata profiled beam breach and in temporary fixed state, subsequently wallboard and existing structure body adjusted and fixed;

6) dismantle stay cord and suspension ring 4, on connecting sewing pointing heat insulating material, be coated with fluid sealant and weather-resistant glue, increase thermal insulation, antiseep and the sound insulation property of precast concrete external wall panel seam crossing, increase the durability of wallboard and the overall aesthetics of metope.

Claims (10)

1. a pointing formula precast concrete external wall panel, comprise side fascia body (3), it is characterized in that described side fascia body (3) two sides are set to terraced structure, side fascia body (3) bottom arranges one group of locating hole (5), and side fascia body (3) inner surface arranges one group of dismountable suspension ring (4).
2. a kind of pointing formula precast concrete external wall panel according to claim 1, it is characterized in that terraced structure is lateral type, the width of side fascia body (3) external surface is greater than the width of its inner surface, both stand out positions form step (2), and relatively wide lateral surface is provided with rubber strip (1).
3. a kind of pointing formula precast concrete external wall panel according to claim 1, is characterized in that four corner angle of described side fascia body (3) arrange fillet.
4. a kind of pointing formula precast concrete external wall panel according to claim 1, it is characterized in that described suspension ring (4) are that upper, middle and lower three rows be arranged in parallel, upper and lower two array pitch are respectively 10-50CM from side fascia body (3) top, bottom, and the distance between a middle row and upper row is 1:3-5 with the ratio of the total distance of two rows.
5. a kind of pointing formula precast concrete external wall panel according to claim 4, suspension ring (4) number that it is characterized in that every row is 2-10.
6. a kind of pointing formula precast concrete external wall panel according to claim 1, is characterized in that being provided for respectively fixing on described side fascia body (3) two sides latch or the pin hole of this side fascia.
7. the hanging method of pointing formula precast concrete external wall panel according to claim 1 in building storey construction, is characterized in that comprising the steps:
1) the floor beam being connected respectively with precast concrete external wall panel upper and lower faces is set as to profiled beam, on this profiled beam, breach is set, described breach size matches with precast concrete external wall panel upper and lower faces thickness, on the corresponding breach being connected with precast concrete external wall panel, be provided with row's fixed sodium muscle below, described location bar dowel is corresponding one by one with locating hole (5), the outward-dipping setting of location bar dowel, its angle of inclination is 5 0-10 0;
2) suspension ring (4) that one of the stay cord on loop wheel machine is separately fixed in side fascia body (3) inner surface, lower two rows are corresponding are upper, make side fascia and horizontal plane form 60 0-75 0angle lifting, and precast concrete external wall panel is winched to the position that actual needs is installed;
3) constructor stands on the floor that precast concrete external wall panel is installed, by the stay cord tying up in advance on the suspension ring (4) of arranging under side fascia body (3) inner surface, adjust precast concrete external wall panel lower end position, it is shelved on connected profiled beam breach, and make to locate bar dowel and inject in corresponding locating hole (5), this stay cord is fixed on by flower basket bolt on the major structure of construction floor of precast concrete external wall panel place floor, then removes lower row's lifting rope;
4) continue operation loop wheel machine, haul on the lifting rope being connected with middle row's suspension ring (4) and move, make side fascia body (3) upper end slowly near connected profiled beam, when approaching soon this profiled beam, will tie up in advance the stay cord of arranging on side fascia body (3) inner surface on suspension ring (4) and be fixed on by flower basket bolt on the major structure of construction of precast concrete external wall panel place floor and in temporary fixed state;
5) constructor unclamps middle part lifting rope after outside lifting rope is pulled out wall, screwing flower basket bolt makes side fascia body (3) top snap in the breach on profiled beam, make wallboard abut against the lateral surface of upper strata profiled beam breach and in temporary fixed state, subsequently wallboard and existing structure body adjusted and fixed;
6) dismantle stay cord and suspension ring (4), on connecting sewing pointing heat insulating material, be coated with fluid sealant and weather-resistant glue, increase thermal insulation, antiseep and the sound insulation property of precast concrete external wall panel seam crossing, increase the durability of wallboard and the overall aesthetics of metope.
8. the hanging method of pointing formula precast concrete external wall panel according to claim 7 in building storey construction, is characterized in that four angles of described side fascia body (3) arrange fillet.
9. the hanging method of pointing formula precast concrete external wall panel according to claim 7 in building storey construction, is characterized in that in step 4), side fascia body (3) upper end slowly refers to that near connected profiled beam with pointing formula precast concrete external wall panel low side, shelving a circle of position heart is rotated lifting.
10. the hanging method of pointing formula precast concrete external wall panel according to claim 7 in building storey construction, the angle that refers to precast concrete external wall panel and horizontal plane while it is characterized in that approaching soon this profiled beam in step 4) be 75-85 ° or refer to pointing formula precast concrete external wall panel upper end and this profiled beam between spacing when meeting suspension hook and pulling out the minimum range outside wall.
CN201310597707.0A 2013-11-25 2013-11-25 A kind of pointing formula precast concrete external wall panel and hanging method thereof CN103603460B (en)

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CN103603460B CN103603460B (en) 2016-02-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862594A (en) * 2015-01-20 2016-08-17 任丘市永基建筑安装工程有限公司 Hoisting technique of steel arch bridge member
CN105954102A (en) * 2016-06-01 2016-09-21 中国科学院武汉岩土力学研究所 Loading plate device of large-scale indoor true-triaxial physical simulation testing machine
CN107401215A (en) * 2017-07-28 2017-11-28 武汉轻工大学 Assembled architecture and construction process
CN107503519A (en) * 2017-08-31 2017-12-22 中国二十二冶集团有限公司 Three layers of composite steel column sandwich heat preservation Side fascia hanging method of assembling type steel structure house

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DE2701882A1 (en) * 1976-01-29 1977-09-22 Poul Dencker Prefabricated concrete element for house structure - has continuous cavity in double external wall of hollowed faced elements (SW 22.8.77)
CN2262064Y (en) * 1996-04-17 1997-09-10 李晓勤 Leak-proof prestress steel reinforced concrete hole wall type prefabricated slab and leak-proof prefabricated beam
CN2578438Y (en) * 2002-11-08 2003-10-08 罗雄武 Building panel
CN202000487U (en) * 2011-02-17 2011-10-05 张剑 Precast beam and precast slab compounded wall board body
CN102235034A (en) * 2010-04-22 2011-11-09 上海市第七建筑有限公司 Prefabricated part and construction method for connecting prefabricated part with main structure
CN102383526A (en) * 2011-10-24 2012-03-21 上海市第二市政工程有限公司 Shockproof external wall panel with prefabricated structure and positioning method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701882A1 (en) * 1976-01-29 1977-09-22 Poul Dencker Prefabricated concrete element for house structure - has continuous cavity in double external wall of hollowed faced elements (SW 22.8.77)
CN2262064Y (en) * 1996-04-17 1997-09-10 李晓勤 Leak-proof prestress steel reinforced concrete hole wall type prefabricated slab and leak-proof prefabricated beam
CN2578438Y (en) * 2002-11-08 2003-10-08 罗雄武 Building panel
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CN202000487U (en) * 2011-02-17 2011-10-05 张剑 Precast beam and precast slab compounded wall board body
CN102383526A (en) * 2011-10-24 2012-03-21 上海市第二市政工程有限公司 Shockproof external wall panel with prefabricated structure and positioning method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862594A (en) * 2015-01-20 2016-08-17 任丘市永基建筑安装工程有限公司 Hoisting technique of steel arch bridge member
CN105954102A (en) * 2016-06-01 2016-09-21 中国科学院武汉岩土力学研究所 Loading plate device of large-scale indoor true-triaxial physical simulation testing machine
CN107401215A (en) * 2017-07-28 2017-11-28 武汉轻工大学 Assembled architecture and construction process
CN107503519A (en) * 2017-08-31 2017-12-22 中国二十二冶集团有限公司 Three layers of composite steel column sandwich heat preservation Side fascia hanging method of assembling type steel structure house
CN107503519B (en) * 2017-08-31 2019-09-24 中国二十二冶集团有限公司 Three layers of composite steel column sandwich heat preservation Side fascia hanging method of assembling type steel structure house

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