CN203821879U - Underpinning frame used for safely detaching load bearing wall - Google Patents
Underpinning frame used for safely detaching load bearing wall Download PDFInfo
- Publication number
- CN203821879U CN203821879U CN201420239838.1U CN201420239838U CN203821879U CN 203821879 U CN203821879 U CN 203821879U CN 201420239838 U CN201420239838 U CN 201420239838U CN 203821879 U CN203821879 U CN 203821879U
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- China
- Prior art keywords
- rectangular steel
- steel plates
- support
- supports
- underpinning
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- Expired - Lifetime
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- 238000009424 underpinning Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims description 6
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Load-Bearing And Curtain Walls (AREA)
Abstract
The utility model relates to modification of a house of a brick-concrete structure, in particular to an underpinning frame used for safely detaching a load bearing wall. The problem that on the circumstance that overall stress safety of the house is guaranteed, a load bearing wall body is difficult to detach in current house modification is solved. The underpinning frame is composed of a plurality of supports and concrete layers. The supports are wrapped by the concrete layers and each support is composed of two horizontal rectangular steel plates and four vertical rectangular steel plates; every four vertical rectangular steel plates are vertically welded and fixed to the two ends of the corresponding two horizontal rectangular steel plates respectively in parallel; the supports are connected through connection ribs; upper underpinning clamping beams are composed of the horizontal rectangular steel plates on the upper portions of the supports and the concrete layers wrapping the horizontal rectangular steel plates on the upper portions of the supports; lower underpinning clamping beams are composed of the horizontal rectangular steel plates on the lower portions of the supports and the concrete layers wrapping the horizontal rectangular steel plates on the lower portions of the supports; underpinning posts are composed of the four vertical rectangular steel plates of each support and the concrete layers wrapping the four vertical rectangular steel plates of the support. According to the underpinning frame, the load bearing wall can be safely detached, the underpinning frame is conveniently manufactured, and practicability is high.
Description
Technical field
The utility model relates to the Safe Transformation technical field of load-bearing wall with masonry structure body, specifically a kind of framework that underpins of removing load bearing wall for safety.
Background technology
Brick masonry structure building is carried out to functional transformation, mainly that building upper strata is that cubicle, lower floor get through the transformation into big room by cubicle, roof panel or floor plate are generally being supported in bearing wall top, how guaranteeing that house is stressed safe in the situation that, remove partial weight-bearing body of wall, this is a difficult problem for current building reconstruction.
Summary of the invention
The purpose of this utility model is to provide a kind of framework that underpins of removing load bearing wall for safety, and can remove partial weight-bearing body of wall guaranteeing that house is stressed safe in the situation that, realizes brick masonry structure building is carried out to functional transformation.
The technical solution of the utility model is; A plurality of supports and layer of concrete, consist of, support is wrapped in layer of concrete, and support is comprised of two blocks of horizontal rectangular steel plates and four vertical rectangular steel plates; Four vertical rectangular steel plates are weldingly fixed on respectively the two ends of two blocks of horizontal rectangular steel plates, be arranged in parallel; Between support, by dowel, connect; On underpin horizontal rectangular steel plate and the layer of concrete thereon of parcel that folder beam is support top and form; Under underpin horizontal rectangular steel plate and the layer of concrete thereon of parcel that folder beam is support bottom and form; The four vertical rectangular steel plates and the parcel layer of concrete thereon that underpin post and be on support form.
Further, between two supports, be spaced apart 600mm-800, support height is 600mm-800mm.
The Computing Principle of frame underpinning structure is as follows:
1. load calculates:
Operational phase acts on the load underpining on framework following four classes (Fig. 4, Fig. 5):
(1) act on the design load Q that underpins folder top surface of the beam
1the dead load and the mobile load that comprise beam deadweight and this floor lid;
(2) act on the design load Q of wall beam end face
2, comprise body of wall deadweight and dead load, the mobile load of above each floor of wall beam end face, wherein Q within the scope of body of wall calculated height
2should consider the Unloading Effect of each floor load to aileron;
(3) act on down the counter-force R underpining on folder beam
1equal Q
1with underpin post deadweight (should be converted into down the line load underpining on folder beam) sum;
(4) act on down the counter-force R underpining on folder beam
2, equal Q
2value.
2. bearing capacity calculation principle
Frame underpinning structure forms with the body of wall on it by underpining framework.Internal force analysis carries out in two steps, and the one, calculate the internal force that underpins folder beam and underpin the closed frame that post forms by upper and lower; The 2nd, calculate by the internal force (Fig. 6, Fig. 7, Fig. 8) that underpins the wall that Jia Liang and the body of wall on it form.
Due to Q
1to act directly on the end face that underpins folder beam, so Q
1internal force under load is all born by underpining framework, underpins the not reduction of internal force of folder beam in the case; And Q
2be to act directly on wall beam, the internal force under this load is because the compound action of wall beam is not all born by underpining framework, at Q
2the internal force that underpins folder beam on effect is lower should reduction.Therefore must carry out respectively internal force calculating by Fig. 6, Fig. 7, then carry out combination of internal forces.Mbi underpins folder beam mid span moment (Mbi=Mli+ α mM2i) under Fig. 6 load, Nbti underpins folder beam mid span moment Nbti=Β nm2i/H0 under Fig. 7 load, and the internal force bending moment diagram that underpins framework is shown in Fig. 9.
According to the result of bearing capacity calculation, determine the size of making support;
The utility model has the advantages that utilize underpin that framework can safety old brick masonry structure building is carried out to functional transformation, quick construction; Underpin frame manufacture convenient, practical.Through fixing crack real-time measurement instrument on improved load bearing wall, body of wall is without cracking, without sedimentation, and effect is fine, can apply widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The lateral view of Fig. 2 Fig. 1;
Fig. 3 is the structural representation of support;
Fig. 4-Fig. 5 is that operational phase acts on the Load Analysis figure underpining on framework;
Fig. 6-Fig. 8 is internal force a, b, the c analysis chart that underpins the wall that the body of wall on Jia Liang and its forms;
Fig. 9 is the internal force bending moment diagram that underpins framework.
The specific embodiment
In figure: 1. on, underpin folder beam, 2. underpin post, 3. underpin down folder beam, 4. body of wall, 5. vertical rectangular steel plates, 6. horizontal rectangular steel plate,
Q1 acts directly on the end face design load that underpins folder beam,
Q2 is the design load that acts on wall beam end face,
R1 equals Q
1with underpin post deadweight,
R2 counter-force value equals Q2.
From Fig. 1, Fig. 2, Fig. 3, known, by a plurality of supports and layer of concrete, formed, support is wrapped in layer of concrete, and support is comprised of two blocks of horizontal rectangular steel plates 5 and four vertical rectangular steel plates 4; Four rectangular steel plates 4 are weldingly fixed on respectively the two ends of two blocks of horizontal rectangular steel plates 5, parallel, vertically setting; Between support, by dowel, connect.On underpin folder beam 1 for the horizontal rectangular steel plate 5 on support top and layer of concrete thereon of parcel composition; Under underpin folder beam 3 for the horizontal rectangular steel plate 5 of support bottom and layer of concrete thereon of parcel composition; Underpin post 2 for four vertical rectangular steel plates 4 on support and wrap up layer of concrete composition thereon.
Between two supports, be spaced apart 600mm-800mm, support height is 600mm-800mm, is applicable to load bearing wall and removes.) span increase, support height increases relatively; Interval relative decrease.
The load bearing wall span 9m of take is example, during the utility model assembling,
1, according to the result of bearing capacity calculation, make support;
2, first cutting a hole a hole apart from ceiling 150mm place every 600mm, will highly for the support of 800mm, put into hole, must make it prop up up and down body of wall;
3, the body of wall between support is chiseled out;
4, support is welded to connect by reinforcing bar;
5, fill harsh concrete, by vibrating spear vibration compacting;
6, guarantee that spandrel girder reaches after desired strength, form removal;
7, form removal rear, can be by removing former bearing wall under spandrel girder.
Certainly, before construction, must take measures effectively to support roof panel or the floor plate on load bearing wall, prevent superstructure destruction, take measures to support this wall both sides, prevent body of wall unstability in construction.
Should be appreciated that the above detailed description of the technical solution of the utility model being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art modifies reading the technical scheme that can record each embodiment on the basis of the utility model manual, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (2)
1. for safety, remove the framework that underpins of load bearing wall, it is characterized in that: a plurality of supports and layer of concrete, consist of, support is wrapped in layer of concrete, support is comprised of two blocks of horizontal rectangular steel plates (6) and four vertical rectangular steel plates (5); Four vertical rectangular steel plates (5) are weldingly fixed on respectively the two ends of two blocks of horizontal rectangular steel plates (6), be arranged in parallel; Between support, by dowel, connect; On underpin folder beam (1) for the horizontal rectangular steel plate (6) on support top and layer of concrete thereon of parcel composition; Under underpin folder beam (3) for the horizontal rectangular steel plate (6) of support bottom and layer of concrete thereon of parcel composition; Underpin post (2) for the four vertical rectangular steel plates (5) on support and parcel layer of concrete composition thereon.
2. a kind of framework that underpins of removing load bearing wall for safety as claimed in claim 1, is characterized in that: between two supports, be spaced apart 600mm-800mm, support height is 600mm-800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239838.1U CN203821879U (en) | 2014-05-12 | 2014-05-12 | Underpinning frame used for safely detaching load bearing wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239838.1U CN203821879U (en) | 2014-05-12 | 2014-05-12 | Underpinning frame used for safely detaching load bearing wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203821879U true CN203821879U (en) | 2014-09-10 |
Family
ID=51477392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239838.1U Expired - Lifetime CN203821879U (en) | 2014-05-12 | 2014-05-12 | Underpinning frame used for safely detaching load bearing wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203821879U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222540A (en) * | 2018-03-23 | 2018-06-29 | 兰州理工大学 | The load bearing wall that brick mix structure is changed to frame structure changes girder construction and construction method |
| CN108374417A (en) * | 2018-05-09 | 2018-08-07 | 中铁十局集团第工程有限公司 | A kind of hydraulic pressure broken pile machine |
| CN110565974A (en) * | 2019-07-27 | 2019-12-13 | 中建科技有限公司 | method for transforming existing building structure |
-
2014
- 2014-05-12 CN CN201420239838.1U patent/CN203821879U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222540A (en) * | 2018-03-23 | 2018-06-29 | 兰州理工大学 | The load bearing wall that brick mix structure is changed to frame structure changes girder construction and construction method |
| CN108374417A (en) * | 2018-05-09 | 2018-08-07 | 中铁十局集团第工程有限公司 | A kind of hydraulic pressure broken pile machine |
| CN108374417B (en) * | 2018-05-09 | 2023-08-25 | 中铁十局集团第一工程有限公司 | hydraulic pile breaker |
| CN110565974A (en) * | 2019-07-27 | 2019-12-13 | 中建科技有限公司 | method for transforming existing building structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
|
| CX01 | Expiry of patent term |