CN108385869B - Construction method using wall unit for superposed shear wall - Google Patents

Construction method using wall unit for superposed shear wall Download PDF

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Publication number
CN108385869B
CN108385869B CN201810225291.2A CN201810225291A CN108385869B CN 108385869 B CN108385869 B CN 108385869B CN 201810225291 A CN201810225291 A CN 201810225291A CN 108385869 B CN108385869 B CN 108385869B
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unit
layer
wire mesh
steel wire
pouring
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CN108385869A (en
Inventor
张晶廷
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Hebei Jingda Building Technology Co ltd
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Hebei Jingda Building Technology Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/61Connections for building structures in general of slab-shaped building elements with each other
    • E04B1/6108Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
    • E04B1/6116Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by locking means on lateral surfaces

Abstract

The invention relates to a construction method using a wall unit for a laminated shear wall, which comprises a steel wire mesh frame, a heat preservation layer and a pouring layer, wherein the heat preservation layer and the pouring layer are filled on the steel wire mesh frame, the heat preservation layer is embedded in the steel wire mesh frame, the pouring layer is a precast concrete protection layer arranged on one side of the heat preservation layer, the outer end surface of the precast concrete protection layer is provided with an installation fixing hole, an auxiliary tie piece is embedded in the precast concrete protection layer, the precast concrete protection layer is installed layer by layer during construction, a vertical stressed steel bar is arranged on the inner side of the heat preservation plate and is connected with the auxiliary tie piece by means of a tie piece for anchoring, a pouring template is arranged on the outer side of the vertical stressed steel bar, then a cavity between the heat preservation layer and the template is poured to form a cast-in-place concrete layer, the upper and lower adjacent wall, the construction process can be greatly simplified, the strength of the integrally cast wall is also achieved, and the height meets the requirements of a shear wall.

Description

Construction method using wall unit for superposed shear wall
Technical Field
The invention relates to the technical field of buildings, in particular to a wall unit for a superposed shear wall and a construction method using the wall unit.
Background
The shear wall is formed by replacing beam columns in a frame structure with reinforced concrete wallboards, can bear internal force caused by various loads, can effectively control the horizontal force of the structure, and is widely applied to high-rise buildings. The existing shear wall is mainly constructed in two modes, one mode is formed by concrete on-site pouring, the mode is greatly influenced by the on-site environment during construction, the construction complexity is high, more manpower is needed, the construction period is long, in order to eliminate the influence of the factors, another construction mode is developed in the prior art, shear wall unit modules are manufactured in a factory, and then a plurality of shear wall unit modules are combined and fixed to form an integral shear wall structure.
Disclosure of Invention
The invention makes up the defects of the prior art, and provides a wall unit for a laminated shear wall and a construction method using the wall unit.
The specific technical scheme of the invention is as follows:
the utility model provides a wall unit that superimposed shear wall was used, this wall unit include the wire net frame and pack the heat preservation and pour the layer on the wire net frame, and the key point is, the heat preservation inlays in the wire net frame, pours the layer for setting up the precast concrete inoxidizing coating in heat preservation one side, and the outer terminal surface of precast concrete inoxidizing coating is provided with the installation fixed orifices, and the inside pre-buried supplementary drawknot spare that has of precast concrete inoxidizing coating.
The steel wire mesh frame is in a truss structure form, one end of the steel wire mesh frame, which is positioned in the precast concrete protective layer, is a longitudinal and transverse crossed reinforcing mesh, and one end of the steel wire mesh frame, which is positioned on the side, which is not poured by the heat preservation layer, is a longitudinal and transverse crossed reinforcing mesh or a unidirectional reinforcing steel bar.
The mounting and fixing holes are unthreaded holes or bolt holes.
The auxiliary tie member is a nut sleeve, a U-shaped or omega-shaped steel bar, and the opening end of the nut sleeve and the elbow end of the U-shaped or omega-shaped steel bar penetrate through and are suspended outside the heat insulation layer.
The construction method of the superposed shear wall by using the wall units has the key points that the construction method comprises the following steps:
A. conveying the prefabricated wall unit to a working surface and fixing the prefabricated wall unit, arranging vertical stressed steel bars on the side, not poured, of a steel wire mesh frame of the wall unit, connecting anchoring tie pieces on the auxiliary tie pieces, arranging pouring templates outside the vertical stressed steel bars, and then pouring a cavity between the heat insulation layer and the templates to form a cast-in-place concrete layer;
B. b, installing an upper-layer wall unit and arranging vertical stressed steel bars on the upper end faces of the wall units in the step A, connecting anchoring tie pieces on the auxiliary tie pieces, arranging pouring templates outside the vertical stressed steel bars, arranging vertical fixing pieces between the outer side of the upper-layer wall unit and the outer side of the wall unit below the upper-layer wall unit, and fixedly connecting the fixing pieces and the two wall units by means of bolts;
C. pouring a cavity between the upper wall unit heat insulation layer and the template to form a cast-in-place concrete layer;
D. forming the superposed shear wall after removing the template, the bolt and the fixing piece, and finishing construction;
E. step B, C, D is repeated until the desired height.
The wall unit is provided with a screw cylinder penetrating through the steel wire net rack at the position of the mounting fixing hole, and a plug is arranged at the port of the screw cylinder; and in the step B, the fixing piece is used for fixedly connecting the upper-layer wall unit and the wall unit below the upper-layer wall unit by means of locking and matching of the bolt and the screw cylinder.
The invention has the beneficial effects that: the invention carries out construction by taking the steel wire net rack with the heat-insulating layer and precast concrete at one side as the wall unit, the steel wire net rack and the heat-insulating layer in the formed wall unit are connected and fixed by the precast concrete protective layer to form a module with stable shape, which is used in the work of assembling the wall body on site, greatly reduces most of the field construction amount, then the module is transported to the site for assembly and fixation, the inner part of the steel wire net rack is poured, the connection strength between the upper and lower adjacent wall units can be obviously enhanced by the cast-in-place work of the part, the two wall units are pre-connected by the vertical fixing piece and the transverse bolt, the flatness of the outer side between the two wall units is consistent with the fixing piece, the repeated adjustment of the regularity between the modules of the assembly type wall body in the prior art is avoided, the up and down alignment can be realized only by, meanwhile, the upper-layer wall units are fixed by the lower-layer wall units, so that the construction is simple, the connection is reliable, the complex work of arranging a support structure before the ground and the upper-layer wall units is avoided, and the construction is more convenient;
drawings
Fig. 1 is a schematic structural view of a wall unit according to an embodiment of the present invention.
Fig. 2 is a schematic view of the assembly structure of the first layer of wall units in an embodiment of the invention.
Fig. 3 is a schematic view of an assembly structure between two wall units according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a wall unit in the prefabrication process in the embodiment of the invention.
In the attached drawing, 1, a precast concrete protective layer, 2, a heat preservation layer, 3, a cast-in-place concrete layer, 4, a steel wire mesh frame, 5, an installation fixing hole, 6, an auxiliary tie piece, 7, a vertical stress steel bar, 8, a tie piece for anchoring, 9, a supporting block, 10, a fixing piece, 11, a bolt, 12, a screw cylinder, 13, a plug, 14 and a rectangular pouring frame body are arranged.
Detailed Description
The invention relates to a wall unit for a laminated shear wall and a construction method using the wall unit, wherein the wall unit comprises a steel wire mesh frame 4, a heat insulation layer 2 and a pouring layer, wherein the heat insulation layer 2 and the pouring layer are filled on the steel wire mesh frame 4, the heat insulation layer 2 is embedded in the steel wire mesh frame 4, the pouring layer is a precast concrete protection layer 1 arranged on one side of the heat insulation layer 2, the outer end surface of the precast concrete protection layer 1 is provided with an installation fixing hole 5, and an auxiliary tie piece 6 is embedded in the precast concrete protection layer 1; the wall units formed by the structure are prefabricated in a factory, are transported to the site and then are fixed, the inner side part of the heat insulation layer 2 is cast in situ, a cast-in-situ concrete layer 3 is formed, and then are fixed layer by layer and poured, a superposed shear wall structure is formed, and the specific construction process is explained through specific embodiments.
In a specific embodiment, as shown in fig. 1, the steel wire mesh frame 4 is in a truss structure form, one end of the steel wire mesh frame 4 in the precast concrete protective layer 1 is a longitudinal and transverse crossed steel bar mesh, and one end of the steel wire mesh frame 4 on the side, where the thermal insulation layer 2 is not poured, is a longitudinal and transverse crossed steel bar mesh or a unidirectional steel bar; the mounting and fixing holes 5 on the outer end face of the precast concrete protective layer 1 are unthreaded holes or bolt holes, screw cylinders 12 penetrating through the steel wire mesh frame 4 are arranged in the mounting and fixing holes 5 in the concrete prefabrication process, and plugs 13 are arranged at the ports of the screw cylinders 12 in order to avoid blockage during prefabrication and pouring; the auxiliary tie member 6 is a nut sleeve, a U-shaped or Ω -shaped steel bar, an open end of the nut sleeve, and an elbow end of the U-shaped or Ω -shaped steel bar penetrate through and overhang the outside of the insulating layer 2, in this embodiment, a form of the U-shaped steel bar is selected as the auxiliary tie member, and construction of the superposed shear wall is performed based on the wall unit of the above structure, as shown in fig. 2 and 3, the construction method includes the following steps:
A. conveying the prefabricated wall unit to a working surface and fixing the prefabricated wall unit, arranging a vertical stressed steel bar 7 on the side, not poured, of a steel wire mesh frame 4 of the wall unit, connecting a pulling piece 8 for anchoring to the elbow end of the U-shaped steel bar, which is suspended outside the heat preservation layer 2, selecting a steel bar with two ends serving as draw hooks for the pulling piece 8 for anchoring, arranging a pouring template outside the vertical stressed steel bar 7, and then pouring a cavity between the heat preservation layer 2 and the template to form a cast-in-situ concrete layer 3;
B. in the step A, the upper wall body unit is arranged on the upper end surface of the wall body unit and is provided with vertical stressed steel bars 7, the lower end of the layer of vertical stressed steel bars 7 is fixedly connected with the upper end of the first layer of vertical stressed steel bars 7, connecting anchor at this layer of U shaped steel muscle turn-buckle end and using drawknot 8, set up in the 7 outsides of vertical atress reinforcing bar and pour and use the template, set up vertical mounting 10 between the upper wall body unit outside and its below wall body unit outside, the steel fixed plate is chooseed for use to mounting 10, the plane degree is good, non-deformable, all with the help of bolt 11 fixed connection between mounting 10 and two wall body units, wall body unit is provided with the barrel 12 that runs through wire net frame 4 in installation fixed orifices 5 position, barrel 12 port is provided with end cap 13, dismantle end cap 13 during fixed mounting, mounting 10 carries out fixed connection with upper wall body unit and the wall body unit of below with the help of the locking cooperation of bolt 11 and barrel 12.
C. Pouring a cavity between the upper wall unit heat-insulating layer 2 and the template to form a cast-in-place concrete layer 3;
D. forming the superposed shear wall after removing the template, the bolt 11 and the fixing piece 10, and finishing construction;
E. step B, C, D is repeated until the desired height.
The prefabrication process of the wall unit in the invention is different from the prior art, and as shown in fig. 4, the prefabrication process comprises the following steps:
a. prefabricating a steel wire mesh frame 4 with a heat insulation layer 2 in the middle;
b. arranging a rectangular pouring frame body 14 with an open upper end, placing the steel wire net rack 4 in the rectangular pouring frame body 14 along the open upper end, wherein the heat preservation layer 2 is in the horizontal direction, and the side surfaces of the heat preservation layer are respectively contacted with four side surfaces of the rectangular pouring frame body 14; in order to improve the supporting strength of the steel wire mesh frame 4, before the steel wire mesh frame 4 is placed into the rectangular pouring frame body 14, a group of supporting blocks 9 are uniformly arranged between the lowest end of the steel wire mesh frame 4 and the middle heat-insulating layer 2;
c. and pouring the steel wire mesh frame 4 positioned at the upper part of the heat preservation layer 2, and removing the rectangular pouring frame body 14 after molding to form a wall unit.
The prefabricated process make full use of wall unit heat preservation, the supporting role of wire net frame, place the wire net frame of pouring its upper strata after the heat preservation level, the concrete lower floor is fixed with heat preservation upper surface bonding gradually in the maintenance process, the wire net frame still plays the limiting displacement of supporting role and heat preservation unit, and simultaneously, compare in the mode of pouring earlier back upper strata bonding heat preservation unit, the phenomenon that the heat preservation bonding insecure or even became invalid that the water separation layering caused in the concrete maintenance process has been avoided to the prefabricated process of this application, the compound effect between whole heat preservation and the precast concrete inoxidizing coating promotes greatly, form the more firm prefabricated wall unit module of an organic whole nature.
According to the construction method, the prefabricated wall units are used for on-site construction, the side, which is not poured, of the wall units is used for on-site pouring in the construction process, and the connection strength between the wall units is obviously improved; the upper layer wall unit and the lower layer wall unit are reliably and fixedly connected by virtue of the precast concrete protective layer, the fixing piece and the locking of the bolt and the screw barrel, and the upper layer wall unit and the lower layer wall unit do not need additional operations of alignment, alignment and angle adjustment, so that the complexity of operation is greatly reduced; in addition, the prefabricated mode of wall body unit has greatly improved the joint strength between heat preservation unit and the precast concrete inoxidizing coating, and wall body unit's integration degree is higher.

Claims (5)

1. A construction method using a wall unit for a superposed shear wall comprises a steel wire mesh frame (4), and a heat insulation layer (2) and a pouring layer which are filled on the steel wire mesh frame (4), wherein the heat insulation layer (2) is embedded in the steel wire mesh frame (4), the shallow pouring layer is a precast concrete protective layer (1) arranged on one side of the heat insulation layer (2), the outer end surface of the precast concrete protective layer (1) is provided with an installation fixing hole (5), and an auxiliary tie member (6) is embedded in the precast concrete protective layer (1); the method is characterized in that: the construction method comprises the following steps:
A. conveying the prefabricated wall unit to a working surface and fixing the prefabricated wall unit, arranging a vertical stressed steel bar (7) on the side, which is not poured, of a steel wire mesh frame (4) of the wall unit, connecting a tie piece (8) for anchoring to an auxiliary tie piece (6), arranging a formwork for pouring outside the vertical stressed steel bar (7), and then pouring a cavity between the heat insulation layer (2) and the formwork to form a cast-in-place concrete layer (3);
B. in the step A, an upper wall unit is arranged on the upper end face of the wall unit, vertical stressed steel bars (7) are arranged on the upper end face of the wall unit, a tie piece (8) for anchoring is connected to an auxiliary tie piece (6), a formwork for pouring is arranged on the outer side of each vertical stressed steel bar, a vertical fixing piece (10) is arranged between the outer side of the upper wall unit and the outer side of the wall unit below the upper wall unit, and the fixing pieces (10) and the two wall units are fixedly connected through bolts (11);
C. pouring a cavity between the upper wall unit heat-insulating layer (2) and the template to form a cast-in-place concrete layer (3);
D. the template, the bolts (11) and the fixing pieces (10) are removed to form the superposed shear wall, and construction is finished;
E. repeat step B, C, D until the desired height;
the prefabricating process of the wall unit comprises the following steps:
a. prefabricating a steel wire mesh frame (4) with a heat-insulating layer (2) in the middle;
b. arranging a rectangular pouring frame body (14) with an open upper end, placing a steel wire mesh frame (4) in the rectangular pouring frame body (14) along the open upper end, wherein the heat preservation layer (2) is in the horizontal direction, and the side surfaces of the heat preservation layer are respectively contacted with four side surfaces of the rectangular pouring frame body (14); before the steel wire mesh frame is placed into the rectangular pouring frame body (14), a group of supporting blocks (9) are uniformly arranged between the lowest end of the steel wire mesh frame (4) and the middle heat-insulating layer (2) of the steel wire mesh frame;
c. and pouring the steel wire mesh frame (4) positioned at the upper part of the heat-insulating layer (2), and removing the rectangular pouring frame body (14) after molding to form the wall unit.
2. A method of constructing using a wall unit for a laminated shear wall as defined in claim 1, wherein: the steel wire mesh frame (4) is in a truss structure form, one end of the steel wire mesh frame, which is positioned in the precast concrete protective layer, is a longitudinal and transverse crossed steel bar mesh, and one end of the steel wire mesh frame, which is positioned on the side, where the heat preservation layer is not poured, is a longitudinal and transverse crossed steel bar mesh or a unidirectional steel bar.
3. A method of constructing using a wall unit for a laminated shear wall as defined in claim 1, wherein: the mounting and fixing holes (5) are unthreaded holes or bolt holes.
4. A method of constructing using a wall unit for a laminated shear wall as defined in claim 1, wherein: the auxiliary tie member (6) is a nut sleeve, a U-shaped or omega-shaped steel bar, and the open end of the nut sleeve and the elbow end of the U-shaped or omega-shaped steel bar penetrate through and are suspended outside the heat-insulating layer (2).
5. A method of constructing using a wall unit for a laminated shear wall as defined in claim 1, wherein: a screw cylinder (12) penetrating through the steel wire mesh frame (4) is arranged at the position of the mounting fixing hole (5) of the wall unit, and a plug (13) is arranged at the port of the screw cylinder (12); and in the step B, the fixing piece (10) is used for fixedly connecting the upper-layer wall unit and the wall unit below the upper-layer wall unit by means of locking and matching of the bolt (11) and the screw cylinder (12).
CN201810225291.2A 2018-03-19 2018-03-19 Construction method using wall unit for superposed shear wall Active CN108385869B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109653399A (en) * 2018-11-05 2019-04-19 河北晶达建筑科技股份有限公司 A kind of construction technology of building
CN110965676A (en) * 2019-12-20 2020-04-07 山东创伟外墙保温材料集团有限公司 Combined type superposed wall and construction method
CN112606180B (en) * 2020-12-16 2022-02-01 西安建筑科技大学 Preparation process of heat-insulating wall for passive house

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CN103195193A (en) * 2013-04-24 2013-07-10 石家庄晶达建筑体系有限公司 Structure and construction method of cast-in-site style welded steel frame composite concrete shear wall
CN105332446A (en) * 2015-11-24 2016-02-17 绍兴宝业西伟德混凝土预制件有限公司 Heat preservation and decoration integrating composite shear wall and construction method thereof
CN206800622U (en) * 2017-06-19 2017-12-26 深圳中海建筑有限公司 A kind of assembled integral concrete shear force wall balcony attachment structure
CN206916990U (en) * 2016-11-18 2018-01-23 哈尔滨鸿盛房屋节能体系研发中心 Assembled cast-in-place concrete sandwiched thermal-insulating wall steel skeleton template system and connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103195193A (en) * 2013-04-24 2013-07-10 石家庄晶达建筑体系有限公司 Structure and construction method of cast-in-site style welded steel frame composite concrete shear wall
CN105332446A (en) * 2015-11-24 2016-02-17 绍兴宝业西伟德混凝土预制件有限公司 Heat preservation and decoration integrating composite shear wall and construction method thereof
CN206916990U (en) * 2016-11-18 2018-01-23 哈尔滨鸿盛房屋节能体系研发中心 Assembled cast-in-place concrete sandwiched thermal-insulating wall steel skeleton template system and connector
CN206800622U (en) * 2017-06-19 2017-12-26 深圳中海建筑有限公司 A kind of assembled integral concrete shear force wall balcony attachment structure

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