CN201962962U - Supporting and replacing tool for uninstalling girders and columns in building transformation - Google Patents

Supporting and replacing tool for uninstalling girders and columns in building transformation Download PDF

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Publication number
CN201962962U
CN201962962U CN2011200166174U CN201120016617U CN201962962U CN 201962962 U CN201962962 U CN 201962962U CN 2011200166174 U CN2011200166174 U CN 2011200166174U CN 201120016617 U CN201120016617 U CN 201120016617U CN 201962962 U CN201962962 U CN 201962962U
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China
Prior art keywords
flange
load
tool
support
screw rod
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Expired - Fee Related
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CN2011200166174U
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Chinese (zh)
Inventor
王辉平
葛倩华
刘淳
黄玮征
俞强
陈帅
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Shanghai Building Decoration Engineering Group Co Ltd
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Shanghai Construction Decoration Engineering Co Ltd
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Abstract

The utility model discloses a supporting and replacing tool for uninstalling girders and columns in a building transformation, which comprises a loading device for girder and column supports and a buffer uninstalling device for a girder midspan. The loading device comprises an integrated U-shaped girder support and a limited load lift device, and the limited load lift device is matched with a lifting flank on the upper end of two side walls of the U-shaped girder support. The buffer uninstalling device for the girder midspan comprises a lute-shaped support, an upper displacement adjusting flange, a screw, a steel sleeve, a lower displacement adjusting flange, a fixed seat of a screw with graduations. The lute-shape support with a limiting function is connected with the screw, the upper displacement adjusting flange is matched with the screw, the lower displacement adjusting flange is matched with the fixed seat of the screw with the graduations, and the steel sleeve is connected with the upper displacement adjusting flange and the lower displacement adjusting flange. The tool can be used as a special tool for replacing the load in transforming girder and column structures of the buildings, effectively avoids damages caused by building structural distortions, and prevents floorslabs and walls from cracking and leaking and the like.

Description

A kind of underpinning tool that is applied to building renovation beam, post unloading
Technical field
The utility model relates to a kind of construction tool that is applied to building renovation beam, post unloading, is specifically related to a kind of construction tool of building renovation beam support and change.
Background technology
When answering building function change or building unit distribution to transform and keep in repair, may need former beam, post in the building are replaced, pulled out, for example: original building column and beam are replaced or pulled out, form new building structure for some buildings.
Such replacement is high especially to construction requirement, under the situation that guarantees new replacement structural strength, also need guarantee the load conversion between the old and new's structure and transmit, many rough sledding such as prevent building structure distortion harm, wall body slit that building girder, plate, major gene unloading produce sudden change and take place, leak.
And the present construction tool that does not have in the building renovation construction technology at above-mentioned replacement process can't satisfy the operation requirement, therefore, designs a kind of construction tool that is applied to building renovation beam, post unloading, is the problem that this area is needed solution badly.
Summary of the invention
The utility model is at the deficiency of existing building transformation process central sill or post unloading process, a kind of construction tool that is applied to building renovation beam, post unloading is provided, can realize the load displacement special tool when building body pillar rod structure is transformed, can effectively avoid building structure distortion harm, many rough sledding such as prevent floor, wall body slit, leak.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of underpinning tool that is applied to building renovation beam, post unloading, this instrument comprises in beam, the limited charger of pillar support load and the girder span and cushions discharge mechanism, described beam, the limited charger of pillar support load comprise integrated U type corbel and limited load lifting appliance, the top of described U type corbel two side extends to form the lifting flank to both sides respectively, and described limited load lifting appliance matches with described flank;
The buffering discharge mechanism comprises the fixed bearing of regulating flange, screw rod, steel sleeve, bottom offset adjusting flange, band scale screw rod with spacing Chinese lute support, top offset in the described girder span, the described support with described screw rod with spacing Chinese lute joined, described top offset is regulated flange and is matched with described screw rod, described bottom offset is regulated flange and is matched with the fixed bearing of described band scale screw rod, and described steel sleeve connects described top offset and regulates flange and described bottom offset adjusting flange.
Further, described limited load lifting appliance is the spacing jack of band load locking.
Further again, the buffering discharge mechanism also comprises the steel pipe of rotary flange in the described girder span.
The utlity model has following advantage according to what technique scheme obtained:
(1) simple in structure, moral conduct is strong;
(2) cost is low, and is easy to use;
(3) effect is remarkable, and is practical;
(4) the perfect conversion that realizes the constructure body structure load.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of the utility model central sill, the limited load charger of pillar support.
Fig. 2 is the structural representation of the utility model central sill span centre buffering discharge mechanism.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
This embodiment is First Five-Year Plan layer (local six a layers) building, is an overhaul, improvement project, needs to keep original exterior wall and original five layers and above wooden construction add layer, and original pin below five layers, wooden frame structure need underpin into steel frame.
This underpins engineering and notes following problem:
(1) construction period must guarantee 5 layers and above normal office work, the five floor faces that is to say are not allowing inhomogeneous displacement during the whole construction and after the construction, therefore it is fixed to carry out integral body to five floor face wooden frame plate bodys system, and the assurance floor load evenly is transformed into new steel structure body and fastens;
(2), carry out the load underpinning construction between the bearing wall more than five layers and post need and the new steel work according to designing requirement;
(3) load between the old and new's structure conversion differential settlement that may cause can give that user more than 5 layers bring building structure distortion, floor, wall body slit, many rough sledding such as leak, thereby causes social influences such as complaint, dispute.
At the problems referred to above, the utility model provides a kind of underpinning tool that is applied to the unloading of building renovation beam, post, and this instrument comprises in beam, pillar support load charger and the girder span and cushions discharge mechanism.
Referring to Fig. 1, beam, pillar support load charger 100 comprise integrated U type corbel 101 and limited load lifting appliance 102, wherein, steel plate lathe punching press one-shot forming behind the U type corbel employing 10mm, integral rigidity is good.And the top of U type corbel two side extends to form the lifting flank to both sides respectively, has guaranteed the rigidity of flank like this.
Limited load lifting appliance 102 is the spacing jack of band load locking, and the flank with U type corbel 101 both sides matches respectively.
During use, the both sides jack forces U type corbel both sides to be pushed inward when lifting process, forms a U type fastener, embraces wooden frame and strengthening steel slab firmly.
Integrated U type corbel has not only solved space problem, and has protected wooden construction effectively as a pallet.In the load transfer process, need to promote original wooden frame.If directly do not promote wooden construction, cause easily that the wooden construction concentration of local is stressed to cause structural deterioration by U type corbel.Adopt U type corbel to carry out load and transform, can increase lifting surface area, stressed to become area load stressed from point load, protects the safety of wooden construction to the full extent.
Simultaneously, can guarantee that with spacing lifting appliance hoist load remains in the design load in lifting process, effectively prevent the harm that causes because of hoist load is excessive, guarantee structural safety.
Integrated U type corbel safety checking computations are as follows:
Basic assumption
1. fixed simulation is adopted in U type corbel bottom;
2. suppose to shelve level bottom the U type corbel, stressed even.Suppose the jack effect after U type corbel two side wing edges are placed backing plate, stressed even.Therefore U type corbel is subjected to even area load effect, chooses wherein a slice and simulates.Safety in the U type corbel checking computations lifting process of the long 10mm of model employing.
Set up model:
1) adopt MIDAS/CIVIL to set up FEM (finite element) model, utilize plate unit simulation U type corbel, get the 10mm length computation, U type corbel model is totally 68 unit, 138 nodes.
2) material
U holder springform is measured 210000N/mm2.
3) fringe conditions
Fixed simulation is adopted in U type corbel bottom.
4) load
Model is not considered the weight of U type corbel own, only considers the lifting force effect.
Experimental result shows: increase by 1 ton lifting force, lift 1mm on the structure.The structure lifting capacity is a standard with 3mm in this engineering, so total lifting force adopts 3 tons in the model, and evenly distributes along its length, is applied to the both sides of model in the mode of evenly distributed load, and the area load size is 13.8N/mm2.
U type corbel is under load action, and maximum distortion occurs in both side ends in the x plane, and shift value is 1.9mm.
The U holder is under load action, and maximum effective stress appears at the web place in the x plane, and stress value is 146.4MPa.
By the aforementioned calculation data as can be seen, under the condition of basic assumption, when wooden frame was subjected to the 13.8N/mm2 area load, maximum displacement was 1.9mm, and maximum stress 146.4MPa is in safe range.
Because this improvement project adopts steel framed structure to underpin the construction technology of brace structure, wooden construction and steel work are flexible material, be subjected to deform behind the load, if be subjected to the transient load effect, easily cause wooden construction to be subjected to displacement even the disturbance of damage and superstructure.For fear of these problems, the utility model has designed a cover buffering discharge mechanism.
Referring to Fig. 2, buffering discharge mechanism 200 comprises in the girder span: the fixed bearing 207 of regulating flange 202, screw rod 203, steel sleeve 204, bottom offset adjusting flange 205, steel pipe 206, band scale screw rod with spacing Chinese lute support 201, top offset.
Support 201 with spacing Chinese lute: block wooden frame with spacing Chinese lute support, guarantee closely to contact with wooden frame, the protection wooden frame is not damaged.
Top offset is regulated flange 202 and screw rod 203: be mainly used in the spacing Chinese lute support 201 of support and accommodation zone, wherein screw rod 203 with join with spacing Chinese lute support 201, top offset is regulated flange 202 and is matched with screw rod 203, regulates the height of support during use by the rotation of flange on screw rod.
Bottom offset is regulated flange 205 and steel pipe 206: bottom offset is regulated flange 205 and is matched with the fixed bearing 207 of band scale screw rod, and steel pipe 206 is convenient to rotation adjusting flange.By promoting steel pipe lever rotary flange, the screw rod of flange on fixed bearing 207 moves up and down, thereby makes support can slowly regulate height.
Steel sleeve 204: adopt steel sleeve 204 to connect upper and lower transposition joint method 202,205, select to adopt the steel sleeve of different length to regulate the support effective height.
The fixed bearing 207 of band scale screw rod: mainly be the bottom support part, aspire for stability, firmly, have a scale.The purpose that has scale is to guarantee a plurality of discharge mechanisms when a support position uses, and requires to carry out synchronously, shows that by scale rotating identical angle controls stroke, is converted to flashy load the process that progressively loads.
The concrete use of buffering discharge mechanism is as follows in the above-mentioned girder span:
The first step is installed, and rotary flange holds out against wooden frame (eliminating the stressed self-deformation amount of material);
Second step was being guaranteed the stressed load transfer of former pin to discharge mechanism, removed pin;
Oppositely slow rotary flange of the 3rd step discharges the discharge mechanism load, notices that angle, speed need synchronously.
The use of buffering discharge mechanism has the following advantages in this girder span:
1, transient change is changed into slow process, effectively protect structural safety;
2, the whirligig of band scale can guarantee that a plurality of discharge mechanisms carry out synchronously, guarantee the structural safety in the transfer process in uninstall process.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof
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Figure 583247DEST_PATH_IMAGE001

Claims (3)

1. underpinning tool that is applied to the unloading of building renovation beam, post, it is characterized in that, described underpinning tool comprises in beam, the limited charger of pillar support load and the girder span and cushions discharge mechanism, described beam, the limited charger of pillar support load comprise integrated U type corbel and limited load lifting appliance, the top of described U type corbel two side extends to form the lifting flank to both sides respectively, and described limited load lifting appliance matches with described flank;
The buffering discharge mechanism comprises the fixed bearing of regulating flange, screw rod, steel sleeve, bottom offset adjusting flange, band scale screw rod with spacing Chinese lute support, top offset in the described girder span, the described support with described screw rod with spacing Chinese lute joined, described top offset is regulated flange and is matched with described screw rod, described bottom offset is regulated flange and is matched with the fixed bearing of described band scale screw rod, and described steel sleeve connects described top offset and regulates flange and described bottom offset adjusting flange.
2. a kind of underpinning tool that is applied to building renovation beam, post unloading according to claim 1 is characterized in that described limited load lifting appliance is the spacing jack of band load locking.
3. a kind of underpinning tool that is applied to building renovation beam, post unloading according to claim 1 is characterized in that the buffering discharge mechanism also comprises the steel pipe of rotary flange in the described girder span.
CN2011200166174U 2011-01-19 2011-01-19 Supporting and replacing tool for uninstalling girders and columns in building transformation Expired - Fee Related CN201962962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200166174U CN201962962U (en) 2011-01-19 2011-01-19 Supporting and replacing tool for uninstalling girders and columns in building transformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200166174U CN201962962U (en) 2011-01-19 2011-01-19 Supporting and replacing tool for uninstalling girders and columns in building transformation

Publications (1)

Publication Number Publication Date
CN201962962U true CN201962962U (en) 2011-09-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900240A (en) * 2012-10-18 2013-01-30 东南大学 Unloading method for construction pillar in building
CN104961058A (en) * 2015-06-08 2015-10-07 哈尔滨工业大学深圳研究生院 Double-Z-type supporting steel girder, crane supporting component with same and use method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900240A (en) * 2012-10-18 2013-01-30 东南大学 Unloading method for construction pillar in building
CN102900240B (en) * 2012-10-18 2014-11-05 东南大学 Unloading method for construction pillar in building
CN104961058A (en) * 2015-06-08 2015-10-07 哈尔滨工业大学深圳研究生院 Double-Z-type supporting steel girder, crane supporting component with same and use method

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 200120 Shanghai city Pudong New Area Fushan Road No. 33

Patentee after: Shanghai Building Decoration Engineering Group Co., Ltd.

Address before: 200120 Shanghai city Pudong New Area Fushan Road No. 33

Patentee before: Shanghai Construction Decoration Engineering Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110907

Termination date: 20180119

CF01 Termination of patent right due to non-payment of annual fee