CN110700439B - Prefabricated assembly type shear wall rapid formwork erecting connection construction method - Google Patents
Prefabricated assembly type shear wall rapid formwork erecting connection construction method Download PDFInfo
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- CN110700439B CN110700439B CN201911013835.XA CN201911013835A CN110700439B CN 110700439 B CN110700439 B CN 110700439B CN 201911013835 A CN201911013835 A CN 201911013835A CN 110700439 B CN110700439 B CN 110700439B
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- shear wall
- grouting
- threaded sleeve
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/6187—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means on top and/or bottom surfaces of the slabs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/005—Strips for covering joints between form sections, e.g. to avoid burring or spilling of laitance
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a rapid formwork erecting connection construction method for a prefabricated assembly type shear wall, which is characterized by comprising the following steps of: 1) prefabricating an assembled shear wall; 2) hoisting and placing the shear wall in place; 3) fixing the shear wall, and unloading the load of the hoisting equipment; 4) binding the longitudinal steel bars at the position of the pouring section; 5) installing a template of the pouring section; 6) injecting a high-strength cement-based grouting material into the grouting threaded sleeve, and simultaneously injecting self-compacting concrete into the pouring section; 7) and (4) after the injected slurry reaches the designed strength, removing the template and the supporting rod. The invention is applied to the quick connection construction of the prefabricated shear wall, greatly improves the construction progress of the template engineering of the shear wall connection area, shortens the construction period and simultaneously improves the construction quality, thereby ensuring the safety performance of the structure and having remarkable economic and social benefits.
Description
Technical Field
The invention relates to prefabricated shear wall connection construction, in particular to a construction method for rapid formwork connection of a prefabricated shear wall.
Background
The development of assembly type buildings is an important approach for realizing the modernization of the building industry, wherein the connection technology of the nodes and the joints of the components is a key technology. In order to reduce the number of grouting sleeve connections, the vertical connection of wall prefabricated parts can adopt a sleeve anchoring and cast-in-place lapping connection method, the butt joint difficulty during the hoisting of the shear wall can be reduced, the construction speed is accelerated, and the connection strength is improved. At present, the construction method has the following problems: 1. the independent grouting threaded sleeve is easy to deviate in the shear wall prefabrication process, and difficulty is brought to the alignment and insertion of subsequent longitudinal steel bars; 2. a plurality of counter-pulling screws are required to be arranged for supporting a template in a concrete pouring area to form counter-pulling screw holes, hole filling construction is required in the later period, the periphery of the template is not tightly contacted with a prefabricated shear wall, and slurry leakage and mold running are easy to occur.
Disclosure of Invention
The invention aims to provide a rapid formwork-erecting connection construction method for a prefabricated shear wall, aiming at the problems in the vertical connection construction of the prefabricated shear wall.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a rapid formwork erecting connection construction method for a prefabricated assembly type shear wall, which is characterized by comprising the following construction steps of:
1) prefabricating the assembled shear wall, and pouring a grouting threaded sleeve support in a support section at the bottom of the shear wall;
2) hoisting the shear wall to the upper part of the lower structure through a hoisting ring at the top of the shear wall by using hoisting equipment, and slowly lowering the shear wall to ensure that longitudinal steel bars at the tops of the support sections at two sides of the lower structure are aligned and inserted into the grouting threaded sleeve;
3) dropping the support section of the shear wall onto the lower structure, laterally fixing the shear wall by using the support rod, and removing the hoisting equipment;
4) binding and connecting the longitudinal steel bars at the position of the pouring section;
5) installing a template of the pouring section;
6) injecting a high-strength cement-based grouting material into the grouting threaded sleeve, and simultaneously injecting self-compacting concrete into the pouring section;
7) and (4) after the injected slurry and the self-compacting concrete reach the designed strength, removing the template and the supporting rod.
Preferably, in the step 1), the grouting threaded sleeve support is composed of two grouting threaded sleeves, and the upper ends and the lower ends of the grouting threaded sleeves are connected into a whole through connecting rods; the upper end and the lower end of the grouting threaded sleeve are respectively provided with an air outlet pipe and a grouting pipe opposite to the connecting rod; the air outlet pipe and the grouting pipe are hollow pipes with internal threads, and the outer ends of the air outlet pipe and the grouting pipe are flush with the surface of the shear wall.
Preferably, in the step 2), the lower end of the shear wall is provided with a supporting section and a pouring section, the longitudinal steel bars in the pouring section extend to the lower surface of the shear wall, and the longitudinal steel bars in the supporting section extend into the grouting threaded sleeve, wherein the extending length is half of the length of the grouting threaded sleeve; the bottom of the grouting threaded sleeve is flush with the bottom of the support section; the extension length of the longitudinal steel bars at the upper end of the lower structure is matched with the longitudinal steel bars of the shear wall.
Preferably, in the step 2), before the longitudinal steel bar is inserted into the grouting threaded sleeve, sealing rings are arranged at two ends of the grouting threaded sleeve. In the process of preventing the shear wall from being prefabricated, concrete slurry enters the grouting threaded sleeve to block the grouting threaded sleeve, and the later-stage high-strength cement-based grouting material is prevented from leaking during injection.
Preferably, in the step 3), before the shear wall is hoisted in place and the hoisting equipment is detached, the shear wall is laterally fixed by using a support rod, and the support rod is fixed on the shear wall and the floor surface by an anchor bolt.
Preferably, in the step 4), a certain number of distributed steel bars are bound for reinforcement in the binding process of the longitudinal steel bars in the pouring section.
Preferably, in the step 5), two ends of the formwork are fixed on the supporting section through fixing caps, the formwork adopts a shaped steel formwork or an aluminum formwork with a back edge, a water-stopping rubber strip is arranged at the contact part of the periphery of the formwork and the shear wall, and the fixing caps penetrate through preformed holes in the formwork and are screwed and fixed with the grouting threaded sleeve support.
Preferably, the fixing cap is of a hollow T-shaped structure, threads are arranged on the inner side and the outer side of the fixing cap, external threads are matched with internal threads of the air outlet pipe and the grouting pipe, and internal threads are matched with threads of the sealing plug and the grouting head.
Preferably, the contact position of the upper part of the template and the shear wall is provided with a semicircular exhaust hole, the side edge of the template is provided with a plate penetrating joint, and the plate penetrating joint is provided with a grouting hole.
Preferably, in the step 6), the grouting head is connected with a fixing cap on the grouting pipe, high-strength cement-based grouting material is injected into the grouting threaded sleeve until the air outlet pipe stably overflows the grouting material, a sealing plug on the fixing cap connected with the air outlet pipe is plugged, then the grouting head is removed, and the sealing plug on the fixing cap connected with the grouting pipe is quickly screwed on; the self-compacting concrete in the pouring section is injected through a grouting hole in the plate penetrating joint until the self-compacting concrete uniformly and stably overflows from the exhaust hole.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the bottom of the shear wall is provided with the supporting section, and after the shear wall is hoisted in place, the vertical supporting force on the shear wall does not need to be carried out through hoisting equipment, so that the use time of machines is saved.
2. The supporting section can provide stable and reliable vertical supporting force in the construction process, so that the stability of the wall body in the slurry pouring process is ensured, and the coagulation and hardening of slurry are facilitated.
3. The number of grouting threaded sleeves for anchoring connection is reduced, and the construction cost is greatly reduced; the grouting threaded sleeve is also used as a fixing part of the template, stable and reliable support can be rapidly provided for the template, the difficulty in building the template is reduced, and the pouring quality of the concrete in the connecting area is improved.
4. Because the connection quantity of the anchoring connection sleeves is reduced, the upper wall body and the lower wall body are easily butted in field installation, the installation speed is greatly increased, and the construction period is shortened.
5. The middle part of the wall body of the prefabricated shear wall adopts steel bar binding lap joint connection, and finally, the formwork is erected again and cast in situ, so that the connection part is reliable, the quality is easy to control, and the structure safety is ensured.
Drawings
FIG. 1 is a side view, a plan view, a top view of a slip casting threaded sleeve mount;
FIG. 2 is a schematic view of a shear wall hoisting installation;
FIG. 3 is a schematic view of the butt joint of longitudinal steel bars of a shear wall;
FIG. 4 is a schematic view of the inner formwork casting concrete and the inner grouting of the sleeve in the casting section;
FIG. 5 is a schematic cross-sectional view A-A of FIG. 4;
FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 4;
FIG. 7 is a schematic cross-sectional view taken along line C-C of FIG. 6;
FIG. 8 is a schematic view of the A node template attachment of FIG. 5;
fig. 9 is a schematic view of the B-node bulkhead fitting of fig. 6.
The figure is marked with: 1-grouting threaded sleeve, 11-grouting pipe, 12-air outlet pipe, 13-connecting rod, 2-template, 21-plate penetrating joint, 22-pouring hole, 23-exhaust hole, 24-fixing cap, 25-sealing plug, 3-supporting rod, 31-anchoring bolt, 41-sealing ring, 42-high-strength cement-based grouting material, 43-self-compacting concrete, 51-shear wall, 52-supporting section, 53-pouring section, 54-substructure, 55-longitudinal steel bar, 56-distribution steel bar and 57-hanging ring.
Detailed Description
For better understanding of the present invention, the following embodiments will be described in detail with reference to fig. 1 to 9, and the following embodiments are implemented on the premise of the technical solution of the present invention, and provide detailed embodiments, but the scope of the present invention is not limited to the following embodiments.
The invention relates to a rapid formwork erecting connection construction method for a prefabricated assembly type shear wall, which comprises the following steps of:
1) prefabricating the assembled shear wall, and pouring a grouting threaded sleeve support into a support section 52 at the bottom of the shear wall 51; the grouting threaded sleeve support is composed of two grouting threaded sleeves 1, and the upper end and the lower end of each grouting threaded sleeve 1 are connected into a whole through a connecting rod 13; the upper end and the lower end of the grouting threaded sleeve 1 are provided with an air outlet pipe 12 and a grouting pipe 11 opposite to the connecting rod 13 respectively, as shown in figure 1; the outlet pipe 12 and the grouting pipe 11 are hollow pipes with internal threads, and the outer ends of the hollow pipes are flush with the surface of the shear wall 51.
2) Hoisting the shear wall 51 to the upper part of the lower structure 54 through a hoisting ring 57 at the top of the shear wall 51 by using hoisting equipment, and slowly lowering the shear wall 51, so that the longitudinal steel bars 55 at the tops of the support sections 52 at two sides of the lower structure 54 are inserted into the grouting threaded sleeve 1 in an aligned manner, as shown in fig. 2; the lower end of the shear wall 51 is provided with a supporting section 52 and a pouring section 53, longitudinal steel bars 55 in the pouring section 53 extend to the lower surface of the shear wall 51, and the longitudinal steel bars 55 in the supporting section 52 extend into the grouting threaded sleeve 1 by half of the length of the grouting threaded sleeve 1; the bottom of the grouting threaded sleeve 1 is flush with the bottom of the support section 52; the extending length of the longitudinal steel bars 55 at the upper end of the lower structure 54 is matched with the longitudinal steel bars 55 of the shear wall 51; before the longitudinal steel bar 55 is inserted into the grouting threaded sleeve 1, sealing rings 41 are arranged at two ends of the grouting threaded sleeve 1, as shown in fig. 8.
3) Dropping the support sections 52 of the shear wall 51 onto the substructure 54, as shown in fig. 3, laterally fixing the shear wall 51 with the support rods 3, and removing the hoisting equipment; before the shear wall 51 is hoisted in place and the hoisting equipment is removed, the shear wall 51 is laterally fixed by using the support rods 3, and the support rods 3 are fixed on the shear wall 51 and the floor surface by the anchor bolts 31, as shown in fig. 5 and 6.
4) The longitudinal steel bars 55 at the position of the pouring section 53 are bound and connected, and a certain number of distributed steel bars 56 are bound for reinforcement, as shown in fig. 3.
5) Installing a template 2 of a pouring section 53, fixing two ends of the template 2 on a supporting section 52 through fixing caps 24, wherein the template 2 adopts a shaped steel template or an aluminum mold with a back edge, a water-stopping rubber strip is arranged at the contact part of the periphery of the template 2 and a shear wall 51, and the fixing caps 24 penetrate through preformed holes on the template 2 to be screwed and fixed with a grouting threaded sleeve support, as shown in figure 5; the fixing cap 24 is a hollow T-shaped structure, threads are arranged on the inner side and the outer side of the fixing cap, external threads are matched with internal threads of the air outlet pipe 12 and the grouting pipe 11, and internal threads are matched with threads of the sealing plug 25 and the grouting head, as shown in the attached figure 8; the contact part of the upper part of the template 2 and the shear wall 51 is provided with a semicircular exhaust hole 23, the side edge is provided with a plate penetrating connector 21, the plate penetrating connector 21 is provided with a grouting hole 22, the exhaust hole 23 is shown in figure 7, and the plate penetrating connector 21 is shown in figure 9.
6) Injecting high-strength cement-based grouting material 42 into the grouting threaded sleeve 1, and simultaneously injecting self-compacting concrete 43 into the pouring section, as shown in fig. 4; connecting the grouting head with a fixing cap 24 on a grouting pipe 11, injecting high-strength cement-based grouting material 42 into the grouting threaded sleeve 1 until the air outlet pipe 12 stably overflows the grouting material, plugging a sealing plug 25 on the fixing cap 24 connected with the air outlet pipe 12, then removing the grouting head, and quickly screwing up the sealing plug 25 on the fixing cap 24 connected with the grouting pipe 11; the self-compacting concrete 43 in the pouring section 53 is injected through the grouting hole 22 on the through plate joint 21 until the self-compacting concrete 43 uniformly and stably overflows from the exhaust hole 23.
7) And (3) after the injected slurry and the self-compacting concrete reach the designed strength, removing the template 2 and the support rod 3.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. A rapid formwork erecting connection construction method for a prefabricated shear wall is characterized by comprising the following steps:
1) prefabricating the assembled shear wall, pouring a grouting threaded sleeve support in a support section (52) at the bottom of the shear wall (51), wherein the grouting threaded sleeve support consists of two grouting threaded sleeves (1), and the upper end and the lower end of each grouting threaded sleeve (1) are connected into a whole through a connecting rod (13); the upper end and the lower end of the grouting threaded sleeve (1) are provided with an air outlet pipe (12) and a grouting pipe (11) respectively at positions opposite to the connecting rod (13); the air outlet pipe (12) and the grouting pipe (11) are hollow pipes with internal threads, and the outer ends of the air outlet pipe and the grouting pipe are flush with the surface of the shear wall (51);
2) the lower end of the shear wall (51) is provided with a supporting section (52) and a pouring section (53), the bottom of the grouting threaded sleeve (1) is flush with the bottom of the supporting section (52), and the extending length of a longitudinal steel bar (55) at the upper end of the lower structure (54) is matched with the longitudinal steel bar (55) of the shear wall (51); hoisting the shear wall (51) to the upper part of the lower structure (54) through a hoisting ring (57) at the top of the shear wall (51) by using hoisting equipment, slowly lowering the shear wall (51), aligning and inserting longitudinal steel bars (55) at two sides of the lower structure (54) into the grouting threaded sleeve (1), wherein the inserting length is half of the length of the grouting threaded sleeve (1), and the longitudinal steel bars (55) in the pouring section (53) extend to the lower surface of the shear wall (51);
3) the support section (52) of the shear wall (51) is dropped onto the lower structure (54), the shear wall (51) is laterally fixed by the support rod (3), and the hoisting equipment is removed;
4) binding and connecting the longitudinal steel bars (55) at the position of the pouring section (53);
5) installing a template (2) of a pouring section (53), fixing two ends of the template (2) on a supporting section (52) through fixing caps (24), wherein the template (2) adopts a shaped steel template or an aluminum mold with a back edge, a water-stopping rubber strip is arranged at the contact part of the periphery of the template (2) and a shear wall (51), and the fixing caps (24) penetrate through preformed holes in the template (2) and are screwed and fixed with a grouting threaded sleeve support;
6) connecting a grouting head with a fixing cap (24) on a grouting pipe (11), injecting high-strength cement-based grouting material (42) into the grouting threaded sleeve (1) until the air outlet pipe (12) stably overflows the grouting material, plugging a sealing plug (25) on the fixing cap (24) connected with the air outlet pipe (12), then removing the grouting head, and quickly screwing up the sealing plug (25) on the fixing cap (24) connected with the grouting pipe (11); the self-compacting concrete (43) in the pouring section (53) is injected through the grouting hole (22) on the plate penetrating joint (21) until the self-compacting concrete (43) uniformly and stably overflows from the exhaust hole (23);
7) and (3) removing the template (2) and the supporting rod (3) after the injected slurry and the self-compacting concrete reach the designed strength.
2. The prefabricated shear wall rapid formwork connection construction method according to claim 1, characterized in that: and in the step 2), before the longitudinal steel bar (55) is inserted into the grouting threaded sleeve (1), sealing rings (41) are arranged at two ends of the grouting threaded sleeve (1).
3. The prefabricated shear wall rapid formwork connection construction method according to claim 1, characterized in that: in the step 3), before the shear wall (51) is hoisted in place and hoisting equipment is detached, the shear wall is laterally fixed by using the support rods (3), and the support rods (3) are fixed on the shear wall (51) and the floor surface through anchor bolts (31).
4. The prefabricated shear wall rapid formwork connection construction method according to claim 1, characterized in that: in the step 4), a certain number of distributed reinforcing steel bars (56) are bound for reinforcement in the binding process of the longitudinal reinforcing steel bars (55) in the pouring section (53).
5. The prefabricated shear wall rapid formwork connection construction method according to claim 1, characterized in that: in the step 5), the fixing cap (24) is of a hollow T-shaped structure, threads are arranged on the inner side and the outer side of the fixing cap, external threads are matched with internal threads of the air outlet pipe (12) and the grouting pipe (11), and internal threads are matched with threads of the sealing plug (25) and the grouting head.
6. The prefabricated shear wall rapid formwork connection construction method according to claim 1, characterized in that: in the step 6), a semicircular exhaust hole (23) is formed in the contact position of the upper part of the template (2) and the shear wall (51), a plate penetrating connector (21) is arranged on the side edge of the template, and a grouting hole (22) is formed in the plate penetrating connector (21).
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| CN201911013835.XA CN110700439B (en) | 2019-10-23 | 2019-10-23 | Prefabricated assembly type shear wall rapid formwork erecting connection construction method |
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| CN201911013835.XA CN110700439B (en) | 2019-10-23 | 2019-10-23 | Prefabricated assembly type shear wall rapid formwork erecting connection construction method |
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| CN110700439B true CN110700439B (en) | 2021-06-04 |
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| CN113235798B (en) * | 2021-05-21 | 2022-10-25 | 铜陵有色建安钢构有限责任公司 | Method for mounting assembled laminated slab |
| CN113338611B (en) * | 2021-06-22 | 2023-09-12 | 中国建筑第七工程局有限公司 | Casting supporting structure of ring rib buckling precast shear wall |
| CN114108833B (en) * | 2021-12-13 | 2023-08-22 | 深圳市湛艺建设集团有限公司 | Assembled wallboard connecting structure and construction method thereof |
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|---|---|---|---|---|
| CN102425310A (en) * | 2011-12-15 | 2012-04-25 | 中国二十二冶集团有限公司 | Assembly-type residential shear wall structural wall body vertical connection construction method |
| CN203113553U (en) * | 2013-02-26 | 2013-08-07 | 沈阳建筑大学建筑设计研究院 | Prefabricated concrete frame-shear wall structure |
| CN106760228A (en) * | 2017-01-18 | 2017-05-31 | 成张佳宁 | The method of precast shear wall wall Vertical bar connection |
| CN109610693A (en) * | 2018-11-21 | 2019-04-12 | 南通市建筑设计研究院有限公司 | Shear wall connection structure and its construction technology |
-
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- 2019-10-23 CN CN201911013835.XA patent/CN110700439B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425310A (en) * | 2011-12-15 | 2012-04-25 | 中国二十二冶集团有限公司 | Assembly-type residential shear wall structural wall body vertical connection construction method |
| CN203113553U (en) * | 2013-02-26 | 2013-08-07 | 沈阳建筑大学建筑设计研究院 | Prefabricated concrete frame-shear wall structure |
| CN106760228A (en) * | 2017-01-18 | 2017-05-31 | 成张佳宁 | The method of precast shear wall wall Vertical bar connection |
| CN109610693A (en) * | 2018-11-21 | 2019-04-12 | 南通市建筑设计研究院有限公司 | Shear wall connection structure and its construction technology |
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