CN106284877A - Assembled stair and installation method thereof - Google Patents

Assembled stair and installation method thereof Download PDF

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Publication number
CN106284877A
CN106284877A CN201610635674.8A CN201610635674A CN106284877A CN 106284877 A CN106284877 A CN 106284877A CN 201610635674 A CN201610635674 A CN 201610635674A CN 106284877 A CN106284877 A CN 106284877A
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CN
China
Prior art keywords
stair
precast
interface
installation
assembled
Prior art date
Application number
CN201610635674.8A
Other languages
Chinese (zh)
Inventor
谢惠庆
欧定文
李熊飞
廖忠伦
刘小刚
刘琴
杨艳
申毅
林伦俊
贾鹏坤
罗佳
王辉
叶青成
赵从举
黄程靖
罗颖
Original Assignee
成都市第四建筑工程公司
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Filing date
Publication date
Application filed by 成都市第四建筑工程公司 filed Critical 成都市第四建筑工程公司
Priority to CN201610635674.8A priority Critical patent/CN106284877A/en
Publication of CN106284877A publication Critical patent/CN106284877A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02Stairways; Layouts thereof

Abstract

The invention discloses a kind of assembled stair and installation method thereof, comprise the following steps: A, build support system and mould pours stair interface;B, maintenance;On C, stair interface, mortar levelling layer is set;D, hoisting prefabricated stair;E, correction precast stair;F, in the preformed hole of upper end, irrigate grouting material sealing with mortar;In G, lower end preformed hole, fixed component connects corresponding connection member and seals with mortar;H, finished product protection.Use assembled stair of the present invention and installation method thereof, spliced at the construction field (site) by precast stair, can effectively solve the problem that the structural system of existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, job site needs to build a large amount of support and laying pours mould, template in a large number, the problem wasted time and energy, the method work progress is simple simultaneously, and shaping structures is good, it is greatly shortened the duration, uses manpower and material resources sparingly.

Description

Assembled stair and installation method thereof

Technical field

The present invention relates to a kind of construction techniques, particularly to a kind of assembled stair and installation method thereof.

Background technology

Along with development and the raising day by day of living standards of the people of China's economy, infrastructure construction particularly building The construction scale in house is increasing, and the structural system of existing structure includes that stair therein all use cast in place reinforced bar coagulation Soil, job site needs to build a large amount of support and laying pours mould, template in a large number, and just can carry out stair pours molding, Such stair construction method, wastes time and energy, and cost is the highest.

Summary of the invention

The structural system that it is an object of the invention to overcome the existing structure in the presence of prior art includes therein Stair all use cast-in-situ steel reinforced concrete, and job site needs to build a large amount of support and laying pours mould, template in a large number, takes Time laborious above-mentioned deficiency, it is provided that a kind of assembled stair and installation method thereof.

In order to realize foregoing invention purpose, the invention provides techniques below scheme:

A kind of assembled stair installation method, comprises the following steps:

A, precast stair molding, according to precast stair component described in actual requirement molding, up and down the two of described precast stair Individual end is respectively provided with the preformed hole of installation;

Build support system and mould needed for stair interface molding, pour molding and prepare to be connected with described precast stair two ends Two described stair interfaces up and down, and pre-buried connection member in each described stair interface;

B, all described stair joint strengths of maintenance arrive design requirement;

C, on each described stair interface, each mortar levelling is set with at the contact surface up and down of described precast stair Layer;

D, lift described precast stair so that it is the described connecting portion that described preformed hole adaptation that both ends are respectively equipped with is corresponding Part, the described connection member that the socket of each described preformed hole is corresponding;

E, correct the installation site of described precast stair;

F, in preformed hole described in described precast stair upper end irrigate grouting material and with mortar seal, formed fixed-hinged support Node is installed;

The fixed component being provided with in preformed hole described in G, described precast stair lower end connects corresponding described connection member also Seal with mortar, make preformed hole described in lower end leave cavity, form slip support abutment and node is installed;

H, finished product protection, complete the assembling of described precast stair.

Use assembled stair of the present invention and installation method thereof, spliced at the construction field (site) by precast stair, energy The enough structural system effectively solving existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, and job site needs Building a large amount of support and laying pours mould, template in a large number, the problem wasted time and energy, the method work progress is simple simultaneously, Shaping structures is good, is greatly shortened the duration, uses manpower and material resources sparingly, and improves stair efficiency of assembling.

Preferably, implement described step F and G simultaneously.

Preferably, in described step C, each described stair interface platform arranges hoist controlling line, and at corresponding wall Absolute altitude control line is set on face.

Preferably, in described step D, the lifting mode of described precast stair comes as used equalizer bar lifting bottle gouard moved by hands Regulation.

Preferably, in described step E, after the lifting of described precast stair is in place, crowbar is used to finely tune described precast stair Method corrects.

Preferably, in described step A, each described connection member is located at described mortar on the described stair interface of correspondence and is looked for At flat bed.

Preferably, each described connection member includes bolt and anchor head, and each described bolt connects corresponding described anchor head, Each described anchor head is located at the described stair interface internal of correspondence, and described bolt is protruded upward by described stair interface.

Preferably, in described step G, described fixed component includes connecting plate and the spiral shell being located in the described preformed hole of correspondence Mother, corresponding described bolt is through described connecting plate adaptive described nut.

Present invention also offers a kind of assembled stair, including precast stair and two stair being connected to its two ends Interface, all described stair interfaces are cast-in-place structural part, and described precast stair is provided with fixed-hinged support, connect its upper end institute Stating stair interface, the most described precast stair can rotate relative to stair interface described in its upper end, and level, vertical direction can not be moved Dynamic, described precast stair is provided with slip support abutment, connects stair interface described in its lower end, the most described precast stair can relatively its Stair interface described in lower end rotates, horizontal direction moves, and vertical direction is immovable.

Wherein, two described stair interfaces are connected with described precast stair upper end fixed-hinged support respectively, and lower end sliding is propped up Seat connects, and this connected mode shock resistance is good.

Use assembled stair of the present invention, spliced by the stair interface scene of precast stair with cast-in-place structural, Can effectively solve the problem that the structural system of existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, job site needs Building a large amount of support and laying pours mould, template in a large number, the problem wasted time and energy, these assembled stair were constructed simultaneously Journey is simple, and shaping structures is good, is greatly shortened the duration, uses manpower and material resources sparingly.

Preferably, pre-buried connection member in all described stair interfaces, described precast stair is respectively arranged at two ends with corresponding The adaptive preformed hole of described connection member, the described connection member that the socket of each described preformed hole is corresponding.

Preferably, the horizontal contact surface of described precast stair and two described stair interfaces is provided with mortar levelling layer.

Preferably, each described connection member includes bolt and anchor head, and each described bolt connects corresponding described anchor head, Each described anchor head is located at the described stair interface internal of correspondence, and described bolt is upward through described sand by described stair interface Slurry screed-coat stretches out the described preformed hole being socketed on correspondence.

Preferably, being provided with grouting material and seal with mortar in preformed hole described in upper end, described grouting material cladding is wherein said Bolt.

Preferably, being provided with fixed component and seal with mortar in preformed hole described in lower end, described bolt therein connects institute State fixed component.

Preferably, described fixed component includes connecting plate and the nut being located in preformed hole described in lower end, therein described Bolt passes described connecting plate adaptive described nut, and described connecting plate nut side perfusion mortar seals.

Preferably, each described stair interface is provided with the flooring flushed with its longitudinal cut, and described flooring is with corresponding Described precast stair end is positioned at same level.

Preferably, each described stair interface is provided with inserts in the longitudinal slot of corresponding described precast stair end And injecting glue sealing.

Preferably, described inserts includes EPS (Expanded Polystyrene, expanded polystyrene (EPS)) plate and PE (High Density Polyethylene, high density polyethylene (HDPE)) rod, described EPS sheet is located at described PE rod bottom.

Using this structure to arrange, described EPS sheet has light weight, thermal conductivity is low, water absorption is little, electrical insulation capability is good and anti- The advantages such as shake, described PE rod has good thermostability, tolerance to cold, higher rigidity and toughness, and mechanical strength is good, and resistance to environment should The advantages such as power cracking behavior is good.

Preferably, described precast stair is provided with railing built-in fitting and lifting built-in fitting.

In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:

1, use assembled stair installation method of the present invention, spliced at the construction field (site) by precast stair, it is possible to The structural system effectively solving existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, and job site needs to take Building a large amount of support and laying pours mould, template in a large number, the problem wasted time and energy, the method work progress is simple simultaneously, knot Structure forming, is greatly shortened the duration, uses manpower and material resources sparingly, and improves stair efficiency of assembling;

2, using assembled stair installation method of the present invention, described inserts includes EPS sheet and PE rod, described EPS sheet is located at described PE rod bottom, uses this structure to arrange, described EPS sheet have light weight, thermal conductivity is low, water absorption is little, electric Good insulation preformance and the advantage such as shockproof, described PE rod has good thermostability, tolerance to cold, higher rigidity and toughness, machinery The advantages such as intensity is good, and environmental stress crack resistance is good;

3, use assembled stair of the present invention, spelled by the stair interface scene of precast stair with cast-in-place structural Connect, it is possible to the structural system effectively solving existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, and construction is existing Field needs to build a large amount of support and laying pours mould, template in a large number, and the problem wasted time and energy, these assembled stair are executed simultaneously Work process is simple, and shaping structures is good, is greatly shortened the duration, uses manpower and material resources sparingly.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of assembled stair installation method of the present invention;

Fig. 2 is the scheme of installation of precast stair of the present invention

Fig. 3 is the close-up schematic view of A in Fig. 2;

Fig. 4 is the close-up schematic view of B in Fig. 2.

Labelling in figure: 1-precast stair, 11-preformed hole, 12-grouting material, 13-fixed component, 2-stair interface, 21-spiral shell Bolt, 22-anchor head, 3-mortar levelling layer, 31-EPS plate, 32-PE rod, 4-flooring, 5-support system.

Detailed description of the invention

Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should not understood Scope for the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to this The scope of invention.

Embodiment 1

As Figure 1-4, assembled stair installation method of the present invention, comprise the following steps:

A, precast stair 1 molding, according to precast stair 1 component described in actual requirement molding, described precast stair 1 upper and lower Two ends are respectively provided with the preformed hole 11 of installation;

Build support system 5 and mould needed for stair interface 2 molding, pour molding and prepare and described precast stair 1 two ends Two the described stair interfaces 2 up and down being connected, and pre-buried connection member in each described stair interface 2;

B, all described stair interface 2 intensity of maintenance arrive design requirement;

C, on each described stair interface 2, each mortar levelling is set with at the contact surface up and down of described precast stair 1 Layer 3;

D, lift described precast stair 1 so that it is the adaptive corresponding described company of the described preformed hole 11 that both ends are respectively equipped with Relay part, each described preformed hole 11 is socketed the described connection member of correspondence;

E, correct the installation site of described precast stair 1;

F, preformed hole 11 described in described precast stair 1 upper end irrigate grouting material 12 and seals with mortar, being formed fixing Hinged-support installs node;

The fixed component 13 being provided with in preformed hole 11 described in G, described precast stair 1 lower end connects the described connecting portion of correspondence Part also seals with mortar, makes preformed hole 11 described in lower end leave cavity, forms slip support abutment and install node;

H, finished product protection, complete the assembling of described precast stair 1.

As a preferred version of the present embodiment, implement described step F and G simultaneously.

Wherein, in described step C, each described stair interface 2 platform arranges hoist controlling line, and at corresponding metope On absolute altitude control line is set;In described step D, the lifting mode of described precast stair 1 is as used equalizer bar lifting manual calabash Reed regulates.;In described step E, described precast stair 1 lift in place after, use crowbar finely tune described precast stair 1 method Correction.

In described step A, each described connection member is located at described mortar levelling layer 3 on the described stair interface 2 of correspondence Place;Each described connection member includes that bolt 21 and anchor head 22, each described bolt 21 connect the described anchor head 22 of correspondence, each The described stair interface 2 that described anchor head 22 is located at correspondence is internal, and described bolt 21 is protruded upward by described stair interface 2;Institute Stating in step G, described fixed component 13 includes connecting plate and the nut being located in the described preformed hole 11 of correspondence, and corresponding is described Bolt 21 is through described connecting plate adaptive described nut.

Each described stair interface 2 is provided with the flooring 4 flushed with its longitudinal cut, and described flooring 4 is described with corresponding Precast stair 1 end is positioned at same level;The longitudinal direction of each described stair interface 2 and corresponding described precast stair 1 end Gap is provided with inserts injecting glue sealing;Described inserts includes EPS sheet 31 and PE rod 32, and described EPS sheet 31 is located at described PE rod 32 bottoms, use this structure to arrange, and described EPS sheet 31 has light weight, thermal conductivity is low, water absorption is little, electrical insulation capability The advantage such as good and shockproof, described PE rod 32 has good thermostability, tolerance to cold, higher rigidity and toughness, and mechanical strength is good, The advantages such as environmental stress crack resistance is good.

Use assembled stair installation method of the present invention, spliced at the construction field (site) by precast stair 1, it is possible to have Effect solves the structural system of existing structure and includes that stair therein all use cast-in-situ steel reinforced concrete, and job site needs to build A large amount of supports and laying pour mould, template in a large number, the problem wasted time and energy, and the method work progress is simple simultaneously, structure Forming, is greatly shortened the duration, uses manpower and material resources sparingly, and improves stair efficiency of assembling.

Embodiment 2

As in Figure 2-4, assembled stair of the present invention, including precast stair 1 be connected to its two ends Two stair interfaces 2.

All described stair interfaces 2 are cast-in-place structural part, and described precast stair 1 is provided with fixed-hinged support, connects it Stair interface 2 described in upper end, the most described precast stair 1 can rotate relative to stair interface 2 described in its upper end, level, Vertical Square To immovable, described precast stair 1 is provided with slip support abutment, connects stair interface 2 described in its lower end, the most described precast stair 1 can be relative to described in its lower end, stair interface 2 rotates, horizontal direction moves, and vertical direction is immovable;Wherein, described in two Stair interface 2 is connected with described precast stair 1 upper end fixed-hinged support respectively, and lower end slip support abutment connects, this connected mode Shock resistance is good;Pre-buried connection member in all described stair interfaces 2, described precast stair 1 is respectively arranged at two ends with corresponding The preformed hole 11 that described connection member is adaptive, each described preformed hole 11 is socketed the described connection member of correspondence;Described prefabricated building The horizontal contact surface of ladder 1 and two described stair interfaces 2 is provided with mortar levelling layer 3.

Each described connection member includes that bolt 21 and anchor head 22, each described bolt 21 connect the described anchor head of correspondence 22, the described stair interface 2 that each described anchor head 22 is located at correspondence is internal, described bolt 21 by described stair interface 2 upwards The described preformed hole 11 being socketed on correspondence is stretched out through described mortar levelling layer 3;Preformed hole 11 described in upper end is provided with grouting material 12 and with mortar seal, described grouting material 12 is coated with wherein said bolt 21;Preformed hole 11 described in lower end is provided with fixed component 13 and with mortar seal, described bolt 21 therein connects described fixed component 13;Described fixed component 13 includes being located at lower end Connecting plate in described preformed hole 11 and nut, described bolt 21 therein is through described connecting plate adaptive described nut, institute State the perfusion mortar sealing of connecting plate nut side.

Each described stair interface 2 is provided with the flooring 4 flushed with its longitudinal cut, and described flooring 4 is described with corresponding Precast stair 1 end is positioned at same level;The longitudinal direction of each described stair interface 2 and corresponding described precast stair 1 end Gap is provided with inserts injecting glue sealing;Described inserts includes EPS sheet 31 and PE rod 32, and described EPS sheet 31 is located at described PE rod 32 bottoms, use this structure to arrange, and described EPS sheet 31 has light weight, thermal conductivity is low, water absorption is little, electrical insulation capability The advantage such as good and shockproof, described PE rod 32 has good thermostability, tolerance to cold, higher rigidity and toughness, and mechanical strength is good, The advantages such as environmental stress crack resistance is good;Described precast stair 1 is provided with railing built-in fitting and lifting built-in fitting.

Use assembled stair of the present invention, spell by precast stair 1 is on-the-spot with the stair interface 2 of cast-in-place structural Connect, it is possible to the structural system effectively solving existing structure includes that stair therein all use cast-in-situ steel reinforced concrete, and construction is existing Field needs to build a large amount of support and laying pours mould, template in a large number, and the problem wasted time and energy, these assembled stair are executed simultaneously Work process is simple, and shaping structures is good, is greatly shortened the duration, uses manpower and material resources sparingly.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.

Claims (10)

1. an assembled stair installation method, it is characterised in that comprise the following steps:
A, precast stair (1) molding, according to precast stair (1) component described in actual requirement molding, described precast stair (1) upper Lower two ends are respectively provided with the preformed hole (11) of installation;
Build support system (5) and mould needed for stair interface (2) molding, pour molding and prepare and described precast stair (1) two Two described stair interfaces (2) up and down that end is connected, and pre-buried connection member in each described stair interface (2);
B, all described stair interface (2) intensity of maintenance arrive design requirement;
C, on each described stair interface (2), each mortar levelling is set with at the contact surface up and down of described precast stair (1) Layer (3);
D, lift described precast stair (1) so that it is the adaptive corresponding described company of the described preformed hole (11) that both ends are respectively equipped with Relay part, the described connection member that the socket of each described preformed hole (11) is corresponding;
E, correct the installation site of described precast stair (1);
F, perfusion grouting material (12) sealing with mortar in the preformed hole (11) described in described precast stair (1) upper end;
The fixed component (13) being provided with in preformed hole (11) described in G, described precast stair (1) lower end connects corresponding described connection Parts also seal with mortar;
H, finished product protection, complete the assembling of described precast stair (1).
Assembled stair installation method the most according to claim 1, it is characterised in that simultaneously implement described step F and G.
Assembled stair installation method the most according to claim 1, it is characterised in that in described step C, each described building Hoist controlling line is set on ladder interface (2) platform, and absolute altitude control line is set on corresponding metope.
Assembled stair installation method the most according to claim 1, it is characterised in that in described step E, described prefabricated building Ladder (1) lift in place after, use crowbar finely tune described precast stair (1) method correction.
Assembled stair installation method the most according to claim 1, it is characterised in that in described step A, each described company Relay part is located at upper described mortar levelling layer (3) place of described stair interface (2) of correspondence.
Assembled stair installation method the most according to claim 5, it is characterised in that each described connection member includes spiral shell Bolt (21) and anchor head (22), each described bolt (21) connects corresponding described anchor head (22), and each described anchor head (22) is located at Corresponding described stair interface (2) is internal, and described bolt (21) is protruded upward by described stair interface (2).
Assembled stair installation method the most according to claim 6, it is characterised in that in described step G, described fixed part Part (13) includes connecting plate and the nut being located in the described preformed hole (11) of correspondence, and corresponding described bolt (21) is through described Connecting plate adaptive described nut.
8. assembled stair, including precast stair (1) and two stair interfaces (2) being connected to its two ends, it is special Levying and be, all described stair interfaces (2) are cast-in-place structural part, and described precast stair (1) is provided with fixed-hinged support, connect Stair interface (2) described in its upper end, described precast stair (1) is provided with slip support abutment, connects stair interface described in its lower end (2)。
Assembled stair the most according to claim 8, it is characterised in that each described stair interface (2) is provided with and it The flooring (4) that longitudinal cut flushes, described flooring (4) is positioned at same level with corresponding described precast stair (1) end.
Assembled stair the most according to claim 8, it is characterised in that it is pre-buried that described precast stair (1) is provided with railing Part and lifting built-in fitting.
CN201610635674.8A 2016-08-05 2016-08-05 Assembled stair and installation method thereof CN106284877A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930484A (en) * 2017-03-15 2017-07-07 中建三局第建设工程有限责任公司 For the full precast stairway system and construction method of prefabricated concrete structure
CN107288214A (en) * 2017-08-08 2017-10-24 袁建华 The construction method in prefabricated monolithic concrete stair room
CN107345439A (en) * 2017-07-21 2017-11-14 中建八局第建设有限公司 A kind of making of precast stair component and installation method
CN107859255A (en) * 2017-10-11 2018-03-30 武汉科技大学 For the auxiliary connection method of PC stair and landing, device and stair equipment
CN108385908A (en) * 2018-03-12 2018-08-10 中国建筑设计院有限公司 A kind of attachment device of assembled stair, assembled stair and its installation method
CN108947448A (en) * 2018-07-20 2018-12-07 中国建筑设计研究院有限公司 A kind of flexible grout material and preparation method thereof for assembled stair
CN109025291A (en) * 2018-07-25 2018-12-18 中国十七冶集团有限公司 A kind of construction method of separate type precast stair
CN109138300A (en) * 2018-09-30 2019-01-04 杭州江润科技有限公司 The construction method of precast stair mounting structure
CN109779166A (en) * 2019-02-28 2019-05-21 中国一冶集团有限公司 A kind of connection structure and its installation method of assembled stair and cast-in-place structural
CN110512746A (en) * 2019-08-20 2019-11-29 山东广发建材制品有限公司 A kind of split type built-in fitting of precast stair and its application method

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CN102767288A (en) * 2012-01-17 2012-11-07 中国建筑第四工程局有限公司 Method and structure for mounting precast reinforced concrete stairs
CN203939199U (en) * 2014-03-20 2014-11-12 天津住宅集团建设工程总承包有限公司 The connection constructing structure of a kind of precast stair bearing place's earthquake-proof impact wreckage
CN104179306A (en) * 2014-09-03 2014-12-03 四川华构住宅工业有限公司 Assembly type beam type sliding support hollow stairway
CN204456693U (en) * 2014-12-19 2015-07-08 中国联合工程公司 A kind of steel work stringer type stairway slidably hinged-support of deck type step plate
CN205012578U (en) * 2015-10-14 2016-02-03 长沙远大住宅工业集团有限公司 Assembly type structure shelves stair connected node

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Publication number Priority date Publication date Assignee Title
CN102767288A (en) * 2012-01-17 2012-11-07 中国建筑第四工程局有限公司 Method and structure for mounting precast reinforced concrete stairs
CN203939199U (en) * 2014-03-20 2014-11-12 天津住宅集团建设工程总承包有限公司 The connection constructing structure of a kind of precast stair bearing place's earthquake-proof impact wreckage
CN104179306A (en) * 2014-09-03 2014-12-03 四川华构住宅工业有限公司 Assembly type beam type sliding support hollow stairway
CN204456693U (en) * 2014-12-19 2015-07-08 中国联合工程公司 A kind of steel work stringer type stairway slidably hinged-support of deck type step plate
CN205012578U (en) * 2015-10-14 2016-02-03 长沙远大住宅工业集团有限公司 Assembly type structure shelves stair connected node

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930484A (en) * 2017-03-15 2017-07-07 中建三局第建设工程有限责任公司 For the full precast stairway system and construction method of prefabricated concrete structure
CN107345439A (en) * 2017-07-21 2017-11-14 中建八局第建设有限公司 A kind of making of precast stair component and installation method
CN107288214A (en) * 2017-08-08 2017-10-24 袁建华 The construction method in prefabricated monolithic concrete stair room
CN107859255A (en) * 2017-10-11 2018-03-30 武汉科技大学 For the auxiliary connection method of PC stair and landing, device and stair equipment
CN108385908A (en) * 2018-03-12 2018-08-10 中国建筑设计院有限公司 A kind of attachment device of assembled stair, assembled stair and its installation method
CN108385908B (en) * 2018-03-12 2020-03-17 中国建筑设计研究院有限公司 Connecting device of assembled stair, assembled stair and installation method of assembled stair
CN108947448A (en) * 2018-07-20 2018-12-07 中国建筑设计研究院有限公司 A kind of flexible grout material and preparation method thereof for assembled stair
CN109025291A (en) * 2018-07-25 2018-12-18 中国十七冶集团有限公司 A kind of construction method of separate type precast stair
CN109138300A (en) * 2018-09-30 2019-01-04 杭州江润科技有限公司 The construction method of precast stair mounting structure
CN109779166A (en) * 2019-02-28 2019-05-21 中国一冶集团有限公司 A kind of connection structure and its installation method of assembled stair and cast-in-place structural
CN110512746A (en) * 2019-08-20 2019-11-29 山东广发建材制品有限公司 A kind of split type built-in fitting of precast stair and its application method

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Application publication date: 20170104