CN207277608U - Prestress steel strip masonry faced wall - Google Patents

Prestress steel strip masonry faced wall Download PDF

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Publication number
CN207277608U
CN207277608U CN201721229799.7U CN201721229799U CN207277608U CN 207277608 U CN207277608 U CN 207277608U CN 201721229799 U CN201721229799 U CN 201721229799U CN 207277608 U CN207277608 U CN 207277608U
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China
Prior art keywords
steel plate
masonry
steel
strip
plate strip
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Withdrawn - After Issue
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CN201721229799.7U
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Chinese (zh)
Inventor
敬登虎
曹双寅
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Southeast University
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Southeast University
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Priority to CN201721229799.7U priority Critical patent/CN207277608U/en
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Abstract

The utility model discloses a kind of prestress steel strip masonry faced wall, including masonry wall, rectangle steel framework is peripherally provided with former and later two facades of the masonry wall, it is provided among the rectangle steel framework and applies prestressed orthogonal steel plate strip, by the split bolt connection through masonry wall between the opposite steel plate strip in two sides before and after the masonry wall.The utility model improves the utilization ratio of steel plate by applying prestressing force, the buckling strength of steel plate can be effectively improved by sidewise restraint, the orthogonal steel plate strip of prestressing force forms masonry wall certain constraint, the ductile ability of wall is improved, increases the bearing capacity and vertical bearing capacity of faced wall, improves anti-seismic performance, it can realize that mechanization produces in batch, production efficiency is high, easy for construction, saves artificial.

Description

Prestress steel strip masonry faced wall
Technical field
It the utility model is related to civil engineering, and in particular to a kind of prestress steel strip masonry faced wall.
Background technology
Masonry is one of construction material, and no matter the wall formed by it is used as vertical supporting member or is used as frame structure Partition or go along with sb. to guard him part, proportion is more than 50% in existing building.Masonry wall is normally due to following several reasons need Reinforced:Material property deteriorates, i.e., drag reduces;Vertical load increase, such as add layer or changed using function;Antidetonation is set Anti- classification or seismic fortification intensity improve, such as kindergarten, primary school, the educational occupancy in middle school and students' dormitory in school building Brought up to emphasis by standard class of setting up defences with the classification of providing fortification against earthquakes in dining room and set up defences class.Wherein, the seismic hardening of the third situation is again Including two aspects:The reinforcing of bearing wall in brick masonry structure building;The transformation of brick setting filling wall in framework house, will It is the shear wall with preferable anti-seismic performance to fill wall and reinforce, so as to change original structural system.
Existing common reinforcement means includes armored concrete surface layer method for strengthening, reinforcing steel net shell surface layer method for strengthening, glues Paste fiber composite material method for strengthening, wire rope net-polymer-modified cement mortar surface layer method for strengthening and add buttress method for strengthening, this A little methods have some disadvantages, some reinforcement means are related to wet construction, the construction period is longer, artificial demand is larger;Or increase Scantling considerable influence is added to use space;Or bearing capacity or rigidity improve it is limited;Or with obvious irreversibility etc..
Utility model content
Purpose of utility model:The purpose of this utility model is to provide a kind of prestress steel strip masonry faced wall, solves people Work demand is big, and installation inconvenience, lateral bearing and vertical bearing capacity increase rate are limited, do not have reversible problem.
Technical solution:Prestress steel strip masonry faced wall described in the utility model, including masonry wall, the masonry wall Rectangle steel framework is peripherally provided with former and later two facades, is provided among the rectangle steel framework and applies prestressed orthogonal steel Strip, by the split bolt connection through masonry wall between the opposite steel plate strip in two sides before and after the masonry wall.
In order to strengthen the overall stability of steel framework, the rectangle steel framework forms for angle steel, passes through welding between adjacent angle steel Mode connect.
Ensure quality for the ease of construction, the orthogonal steel plate strip is connected by welding with the rectangle steel framework.
In order to improve the utilization rate of steel plate, the orthogonal steel plate is by being applied with the vertical steel plate strip of compressive pre-stress and being applied with The horizontal steel plate strip composition of pre-tensile stress.
In order to ensure that horizontal steel plate strip has certain stretcher strain after split bolt fastening, the width of steel plate strip is 100 ~300mm, the thickness of steel plate strip is 3~10mm.
When applying prestressing force to steel plate to fasten split bolt so that steel plate occurs to move integrally production along long side direction Life is uniformly pressed or tension, the hole of assembling split bolt is provided with the orthogonal steel plate strip, hole is U-shaped hole.
In order to ensure split bolt in fastener cycle, steel plate can freely stretch or compression, the U-shaped hole Intermediate rectangular width is 1.5 times of split bolt diameter, and rectangle length is 6 times of split bolt diameter, half diameter of a circle of end For 1.5 times of split bolt diameter.
Beneficial effect:The utility model light plate belongs to ductile material, possesses higher intensity and energy dissipation capacity;Masonry category In fragile material, ductility is poor, and advanced there are stress in existing masonry wall.Prestress steel strip passes through split bolt with masonry After combination, compressive pre-stress is applied with vertical steel plate strip, pre-tensile stress is applied with horizontal steel plate strip, the utilization ratio of steel plate obtains To increasing substantially, in addition, masonry wall can effectively improve the buckling strength of steel plate by sidewise restraint, prestressing force is orthogonal Steel plate strip forms masonry wall certain constraint, can improve the ductile ability of wall, both can preferably improve in combination The bearing capacity and vertical bearing capacity of faced wall, while improve anti-seismic performance.In practical applications, the utility model Faced wall can be connected with existing frame structure in building, and the masonry wall in faced wall can be to build by laying bricks or stones again or using existing Masonry filler wall.Therefore, can be fully using existing frame with building in the seismic hardening transformation of multistory & high-rise frame structure Body fills wall.The faced wall of the utility model can at the construction field (site) by having been produced in factory steel plate strip, angle steel and masonry wall It is assembled with split bolt by welding.Therefore, the wet construction involved by the whole production process of the faced wall is few and the duration It is short, it is possible to reduce the personnel amount and human cost of work.Steel plate strip, angle steel and split bolt be all used by the utility model Mechanization production can be carried out in factory, it is possible to achieve mechanization produces in batch, and production efficiency is high, while it is existing to reduce construction The noise of field and environmental pollution.The prestress steel strip masonry assembled wall of the utility model possess it is good it is detachable with again Assembling characteristic, meets sustainable development and reinforces invertibity theory.
Brief description of the drawings
Fig. 1 is the axonometric drawing of the utility model prestress steel strip masonry faced wall;
Fig. 2 is the elevation of the utility model prestress steel strip masonry faced wall;
Fig. 3 is the structure diagram that the utility model prestress steel strip masonry faced wall is applied to central frame;
Fig. 4 is Section A-A figure in Fig. 2;
Fig. 5 is section B-B figure in Fig. 3;
Fig. 6 is between the angle steel of periphery and the connection detail drawing between periphery angle steel and steel plate strip;
Fig. 7 is vertical and horizontal steel plate strip structure diagram;
Fig. 8 is the process schematic for applying compressive pre-stress in vertical steel plate strip;
Fig. 9 is the process schematic for applying pre-tensile stress in horizontal steel plate strip.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, the prestress steel strip masonry faced wall of the utility model, including masonry wall 1, before masonry wall 1 Rectangle steel framework 6 is peripherally provided with latter two facade, rectangle steel framework forms for angle steel, by welding shape between adjacent angle steel Into solder design, limb a length of 80mm, the thickness 10mm of angle steel, can select a length of 50~200mm of limb according to the actual requirements, Thickness is the angle steel of 3~18mm.It is provided among rectangle steel framework and applies prestressed orthogonal steel plate strip, orthogonal steel plate strip passes through weldering Connect the weld seam 5 to be formed to be fixed on rectangle steel framework 6, the width of steel plate strip is 100mm, thickness 5mm, can be according to the actual requirements Selection width is 100~300mm, and thickness is the steel plate strip of 3~10mm.Cement bonded sand is provided between masonry wall and vertical steel plate strip Pulp layer 8.Connected before and after masonry wall between the opposite steel plate strip in two sides by the split bolt 4 through masonry wall, two is adjacent to drawing Spacing is 100 times of steel plate thickness between bolt 4, and spacing is 70~300 times between split bolt 4 can be set according to actual conditions Steel plate thickness, a diameter of 10mm of split bolt 4, can change the diameter of split bolt 4 according to the actual requirements, be typically chosen pair The scope for drawing the diameter of bolt 4 is 10~30mm.The hole 9 of assembling split bolt is offered on steel plate strip, hole 9 is U-shaped hole.Its In, as shown in FIG. 8 and 9, by split bolt 4 fastening come to the horizontal steel plate 2 in orthogonal steel plate strip with apply pre-tensile stress, To vertical steel plate 3 with application compressive pre-stress.The present invention is with frame structure 7 existing in building when being connected, and masonry wall can be with It is that existing masonry filler wall or construction site are built by laying bricks or stones in building in existing frame structure in existing building Masonry filler wall.
When the utility model is installed, prestress steel strip masonry faced wall need are first determined according to the Modeling Calculation of structure entirety The vertical force and horizontal force to be undertaken.Then given in basis determines vertical force and horizontal force, and existing related specifications Bearing capacity computation method determines the physical dimension of prestress steel strip masonry assembled wall light plate band, periphery angle steel, determines Stress distribution in steel plate strip, determines split bolt spacing and screw diameter.According to the data obtained, the mechanical metaplasia in factory Produce steel plate strip, angle steel and split bolt.Build masonry filler wall by laying bricks or stones inside existing reinforced concrete frame, or utilize scene Existing masonry filler wall, utilizes existing masonry load bearing wall in brick masonry structure building, these wall both sides by welding with The assembled steel plate strip of split bolt fastening, periphery angle steel.Wherein, orthogonal steel plate strip needs to be fastened on steel plate strip by split bolt Stress distribution designed by middle formation, ultimately forms prestress steel strip masonry faced wall.In advance should on applying in steel plate strip The calculating of power can be carried out by following example:It is assumed that needing compressive pre-stress 60MPa in vertical steel plate strip, vertical steel plate strip is The thick Q235 steel of 200mm wide, 4mm, masonry wall need vertical steel plate strip length L=2980mm in theory;The elastic modulus E of steel plate takes 200GPa.According to the professional knowledge of the mechanics of materials, the decrement Δ L of steel plate and the stress level σ of steel plate, elastic modulus E, length Relational expression between L is as follows:
Δ L=(σ L)/E
In order to reach produced in vertical steel plate strip expected from pressuring stress level, the vertical steel plate strip that when actual installation needs Length should be (Δ L+L).At this time
Δ L=(60 × 2980)/200000=0.894mm
Δ L+L=2980.894mm
Therefore, in actual installation, the physical length of steel plate strip takes 2980.894mm, passes through the laterally tight of split bolt Gu process is as shown in Figure 8 so that the steel plate compression that length is 2980.894mm to 2980mm.At this time, can be produced in vertical steel plate strip Raw compressive pre-stress value is 60MPa.If not applying compression in steel plate strip, vertical steel plate strip is after installation is complete, in steel plate strip Compression be 0.Vertical steel plate strip belongs to passive enforcement at this time, it is necessary to until vertical compression occurs for wall, vertical steel Compression can be just produced in strip, steel plate strip is compared to wall there are obvious Stress resort, and the interest rate efficiency of steel plate can be big Amplitude reduction, the vertical bearing capacity increase rate of wall also will be very limited.By the vertical steel plate strip category for applying compressive pre-stress Reinforced in active, the utilization ratio of steel plate will increase substantially.
Similarly, for horizontal steel plate strip, it is assumed that the center spacing of vertical steel plate strip is 800mm, vertical steel plate strip bottom sand Pulp layer thickness is 3mm.At this time, the clear spacing of vertical steel plate strip is 600mm.Geometrical relationship and split bolt according to Fig. 9 State after fastening, then tensile elongation of the horizontal steel plate strip in the range of 800mm is 0.1633mm.At this time, in horizontal steel plate strip The pre-tensile stress of middle generation is:
σ=E × Δ L/L=200000 × 0.1633/800=40.8MPa
It is the same with vertical steel plate strip, if horizontal steel plate strip does not produce pre-tensile stress by the horizontal fastening of split bolt, Tension after then horizontal steel plate strip installs is 0.Horizontal steel plate strip belongs to passive enforcement at this time, it is necessary to when horizontal stroke occurs for wall When even cracking to deformation, effective tension can be just produced in horizontal steel plate strip, so as to play the role of constraining wall.

Claims (7)

1. a kind of prestress steel strip masonry faced wall, including masonry wall (1), it is characterised in that two before and after the masonry wall (1) Rectangle steel framework (6) is peripherally provided with a facade, is provided among the rectangle steel framework (6) and applies prestressed orthogonal steel Strip, is connected between the opposite steel plate strip in two sides by the split bolt (4) through masonry wall before and after the masonry wall (1).
2. prestress steel strip masonry faced wall according to claim 1, it is characterised in that the rectangle steel framework (6) is Angle steel forms, and is connected by welding between adjacent angle steel.
3. prestress steel strip masonry faced wall according to claim 1, it is characterised in that the orthogonal steel plate strip and institute Rectangle steel framework is stated to connect by welding.
4. prestress steel strip masonry faced wall according to claim 1, it is characterised in that the orthogonal steel plate is by applying By compressive pre-stress vertical steel plate strip (3) and be applied with the horizontal steel plate strip (2) of pre-tensile stress and form.
5. prestress steel strip masonry faced wall according to claim 1, it is characterised in that every in the orthogonal steel plate strip The width of bar steel plate strip is 100~300mm, and the thickness of every steel plate strip is 3~10mm.
6. prestress steel strip masonry faced wall according to claim 1, it is characterised in that the horizontal stroke of the orthogonal steel plate strip The hole (9) of assembling split bolt (4) is both provided with to steel plate strip and vertical steel plate strip, hole (9) are U-shaped hole.
7. prestress steel strip masonry faced wall according to claim 6, it is characterised in that the middle square in the U-shaped hole Shape width is 1.5 times of split bolt (4) diameter, and rectangle length is 6 times of split bolt diameter, end semicircle it is a diameter of right Draw the diameter of bolt 1.5 times.
CN201721229799.7U 2017-09-22 2017-09-22 Prestress steel strip masonry faced wall Withdrawn - After Issue CN207277608U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721229799.7U CN207277608U (en) 2017-09-22 2017-09-22 Prestress steel strip masonry faced wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721229799.7U CN207277608U (en) 2017-09-22 2017-09-22 Prestress steel strip masonry faced wall

Publications (1)

Publication Number Publication Date
CN207277608U true CN207277608U (en) 2018-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721229799.7U Withdrawn - After Issue CN207277608U (en) 2017-09-22 2017-09-22 Prestress steel strip masonry faced wall

Country Status (1)

Country Link
CN (1) CN207277608U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107524251A (en) * 2017-09-22 2017-12-29 东南大学 Prestress steel strip masonry faced wall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107524251A (en) * 2017-09-22 2017-12-29 东南大学 Prestress steel strip masonry faced wall
CN107524251B (en) * 2017-09-22 2019-08-20 东南大学 Prestress steel strip masonry faced wall

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Granted publication date: 20180427

Effective date of abandoning: 20190820