CN209908005U - Assembled self-balancing steel underpins device - Google Patents
Assembled self-balancing steel underpins device Download PDFInfo
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- CN209908005U CN209908005U CN201920366465.7U CN201920366465U CN209908005U CN 209908005 U CN209908005 U CN 209908005U CN 201920366465 U CN201920366465 U CN 201920366465U CN 209908005 U CN209908005 U CN 209908005U
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Abstract
The utility model relates to an assembled self-balancing steel underpins device, support the rigid body including setting up two main counter-forces at two opposite flanks of structure post, the secondary counter-force that sets up between two main counter-force support rigid bodies and be located two other opposite flanks of structure post supports the rigid body, the setting support between rigid body and the structure post and with the main frictional contact rigid body of structure post butt at main counter-force, the setting support between rigid body and the structure post and with the secondary frictional contact rigid body of structure post butt at secondary counter-force, a plurality of jacks of fixed setting on main counter-force support rigid body and secondary counter-force support rigid body, jack and main frictional contact rigid body and secondary frictional contact rigid body butt are used for providing the pressure between main frictional contact rigid body and secondary frictional contact rigid body and the structure post. Compared with the prior art, the utility model has the characteristics of underpin load is big, practical wide range, reuse etc.
Description
Technical Field
The utility model relates to a underpin device, concretely relates to assembled self-balancing steel underpins device.
Background
The column underpinning technology is one of the key technologies commonly used in the existing engineering structure strengthening, displacement and large-space development engineering, wherein the application range of temporary underpinning is increasingly expanded. At present, the underpinning modes adopted in China are mainly four: the method comprises the following steps of single-beam type column underpinning, column-embracing beam column underpinning, profile steel split bolt underpinning and bar planting underpinning. The underpinning method of the column-embracing beam column is the most widely applied underpinning method in China at present, and is convenient to construct and high in safety. However, the underpinning node has small underpinning load, can not be recycled and has limited application range; the single-beam column underpinning node is only suitable for a structure with a small part of underpinning load, the safety coefficient is low, and the existing building displacement and underpinning engineering is less adopted; the profile steel split bolt underpinning node has good bearing capacity and ductility and can bear large underpinning load, but the underpinning node is complex in construction, high in comprehensive cost and less in actual engineering application; the steel bar is implanted into the column by drilling, implanting steel bars and improving the bearing capacity of the underpinning interface through the shearing resistance of the steel bars, but the method has limited improvement range of the bearing capacity of the underpinning joint and damages the original structural column.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an assembled self-balancing steel underpins device that trades that the load is big, application scope is wide, reuse in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme: the utility model provides an assembled self-balancing steel underpins device, be used for the underpinning of structure post, the device is including setting up two main counter-force support rigid bodies in two opposite sides of structure post, set up between two main counter-force support rigid bodies and lie in the secondary counter-force support rigid body of two other opposite sides of structure post, set up between main counter-force support rigid body and structure post and with the main frictional contact rigid body of structure post butt, set up between secondary counter-force support rigid body and structure post and with the inferior frictional contact rigid body of structure post butt, a plurality of jacks of fixed setting on main counter-force support rigid body and secondary counter-force support rigid body, jack and main frictional contact rigid body and inferior frictional contact rigid body butt are used for providing the pressure between main frictional contact rigid body and inferior frictional contact rigid body and the structure post.
The two ends of the main counter-force support rigid body are integrally provided with extending arm supports, grooves are formed in the extending arm supports, and the two ends of the secondary counter-force support rigid body are inserted into the grooves.
The width of the groove is 2-5 mm larger than the thickness of the counter-force support rigid body, a flexible friction material such as rubber or latex is filled in a gap between the groove and the counter-force support rigid body, and the thickness of the flexible friction material is preferably 1-2 mm; the length of the cantilever support is 100-300 mm.
Two main counter-force supports and is equipped with many owner between the rigid body and to drawing connecting screw rod, two inferior counter-force supports and is equipped with many inferior counter-pulling connecting screw rod between the rigid body, just inferior counter-pulling connecting screw rod runs through the arm that stretches supports.
The diameter of the main counter-pull connecting screw is more than or equal to 30 mm; inferior diameter to drawing connecting screw is 16 ~ 24mm, just main distance to drawing connecting screw to the contact surface of main frictional contact rigid body and structure post is not less than 2 times main diameter to drawing connecting screw, inferior distance to drawing connecting screw to the contact surface of inferior frictional contact rigid body and structure post is not less than 2 times is to drawing connecting screw diameter.
The main counter-force support rigid body is of a hollow box-shaped structure, a plurality of stiffening ribs are welded in the main counter-force support rigid body, and the stiffening ribs positioned on the main counter-force support rigid body are coaxial with the outrigger support and the jack;
the secondary counter-force support rigid body is of a hollow box-shaped structure, a plurality of stiffening ribs are welded in the secondary counter-force support rigid body, and the stiffening ribs located on the secondary counter-force support rigid body are coaxial with the jack.
The coaxial means parallel in direction. The stiffening ribs are arranged to increase the rigidity and bearing capacity of the counter-force supporting rigid body and the contact friction rigid body, and ensure that the stress of each component can be effectively transmitted.
The thickness of the stiffening ribs is more than or equal to 10 mm.
The number of jacks between the main counter-force support rigid body and the structural column is 1-4; the number of the jacks between the secondary counter-force support rigid body and the structural column is 1-2, and the specific number is calculated and determined according to the underpinning load value.
The width of the main friction contact rigid body and the width of the secondary friction contact rigid body are more than or equal to 200mm, the arrangement can ensure that a rolling shaft is arranged below the main friction contact rigid body and the secondary friction contact rigid body, so that the purposes of displacement of a building and the like are achieved, a wave-shaped rough surface is arranged on one side, abutted against the structural column, of the main friction contact rigid body and the secondary friction contact rigid body, and the height between a middle wave crest and a wave trough of the wave-shaped rough surface is more than or equal; in addition, the included angle of the tangent line of the curve at the peak position is not less than 90 degrees, so that the contact friction rigid body is ensured not to damage the surface of the structural column.
Compared with the prior art, the beneficial effects of the utility model are embodied in following several aspects:
(1) different numbers of jacks can be adopted according to the column underpinning load, thereby realizing the engineering application of large underpinning load;
(2) the device can be prefabricated and produced in a factory according to actual use requirements, is simple and convenient to install and dismantle and can be repeatedly used;
(3 the device of the present invention hardly causes any damage to the column surface.
Drawings
Fig. 1 is a front view of the device of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of the device of the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of the device of the present invention;
FIG. 4 is a front view of the primary reaction support rigid body;
fig. 5 is a front view of the contact friction rigid body.
The jack is characterized in that 1 is a jack, 2 is a main counter-force supporting rigid body, 3 is a secondary counter-force supporting rigid body, 4 is a main friction contact rigid body, 5 is a secondary friction contact rigid body, 6 is a main counter-pull connecting screw rod, 7 is a secondary counter-pull connecting screw rod, 8 is a stiffening rib 8, and 9 is an extending arm support.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
An assembled self-balancing steel underpinning device is structurally shown in figures 1-3 and mainly comprises a jack 1, a main counter force supporting rigid body 2, a secondary counter force supporting rigid body 3, a main friction contact rigid body 4, a secondary friction contact rigid body 5, a main counter-pull connecting screw rod 6, a secondary counter-pull connecting screw rod 7, a stiffening rib 8 and an extending arm support 9.
The counter-force supporting rigid body and the contact friction rigid body are preferably of hollow box type structures, and the stiffening ribs 8 are welded inside the hollow box type structures and used for increasing the rigidity and the bearing capacity of the counter-force supporting rigid body and the contact friction rigid body. The intersection point of the stiffening rib 8 and the centroid of the jack are kept on the same horizontal line, and the stress of each component can be effectively transmitted.
The end part of the main counter-force support rigid body 2 is welded with an extension arm support 9, as shown in figure 4, the gap between the two extension arm supports 9 is 2-5 mm larger than the width of the secondary counter-force support rigid body 3; flexible friction materials are pasted on two sides of the end part of the secondary counter-force support rigid body 3, the thickness of the flexible friction materials is preferably 1-2 mm, and the measure is required to be used for realizing tight connection between the primary counter-force support rigid body and the secondary counter-force support rigid body.
The width of the main friction contact rigid body 4 and the width of the secondary friction contact rigid body 5 are not smaller than 200mm, and the measure can ensure that the rollers are arranged below the main friction contact rigid body and the secondary friction contact rigid body, so that the purposes of displacement of buildings and the like are achieved.
The main frictional contact rigid body 4 and the sub-frictional contact rigid body 5 are subjected to roughening treatment on the contact side of the structural column, and the friction coefficient between the contact frictional rigid body and the structural column is improved by controlling the height between the wave crest and the wave trough of the contact surface of the processed steel plate, as shown in fig. 5, the included angle of the tangent line of the curve at the position of the wave crest is limited to be not less than 90 degrees, so that the contact frictional rigid body is ensured not to damage the surface of the structural column.
An assembled self-balancing steel underpinning device is used according to the following method: firstly, a main counter-force support rigid body 2 and a secondary counter-force support rigid body 3, a main friction contact rigid body 4 and a secondary friction contact rigid body 5 are manufactured, and stiffening ribs 8 are welded according to design requirements; then two main counter-force support rigid bodies 2 are symmetrically installed, secondary counter-force support rigid bodies 3 are assembled into grooves of the extending arm supports 9, and secondary counter-pull screw rods 7 are connected to be preliminarily installed and fixed. Then, mounting and fixing the main friction contact rigid body 4, the secondary friction contact rigid body 5 and the jack 1; finally, the main counter-pulling screw 6 is connected, the positions of the components are adjusted, and the jack 1 is preloaded to enable the whole underpinning device to be integrated.
Claims (9)
1. An assembled self-balancing steel underpinning device is used for underpinning a structural column and is characterized in that, the device comprises two main counter-force supporting rigid bodies (2) arranged on two opposite side surfaces of a structural column, secondary counter-force supporting rigid bodies (3) arranged between the two main counter-force supporting rigid bodies (2) and positioned on the other two opposite side surfaces of the structural column, a main frictional contact rigid body (4) arranged between the main counter-force supporting rigid bodies (2) and the structural column and abutted against the structural column, a secondary frictional contact rigid body (5) arranged between the secondary counter-force supporting rigid bodies (3) and the structural column and abutted against the structural column, and a plurality of jacks (1) fixedly arranged on the main counter-force supporting rigid bodies (2) and the secondary counter-force supporting rigid bodies (3), the jack (1) is abutted against the main friction contact rigid body (4) and the secondary friction contact rigid body (5) and is used for providing pressure between the main friction contact rigid body (4) and the secondary friction contact rigid body (5) and the structural column.
2. The assembled self-balancing steel underpinning device according to claim 1, wherein the main counter force support rigid body (2) is integrally provided with outrigger supports (9) at both ends thereof, the outrigger supports (9) are provided with grooves therein, and the secondary counter force support rigid body (3) is inserted into the grooves at both ends thereof.
3. The assembled self-balancing steel underpinning device according to claim 2, wherein the width of the groove is 2-5 mm larger than the thickness of the reaction force support rigid body (3), a gap between the groove and the reaction force support rigid body (3) is filled with a flexible friction material, and the length of the cantilever support (9) is 100-300 mm.
4. The assembled self-balancing steel underpinning device according to claim 2, wherein a plurality of main counter-pulling connecting screws (6) are arranged between two main counter-force supporting rigid bodies (2), a plurality of secondary counter-pulling connecting screws (7) are arranged between two secondary counter-force supporting rigid bodies (3), and the secondary counter-pulling connecting screws (7) penetrate through the boom supports (9).
5. The assembled self-balancing steel underpinning device according to claim 4, wherein the diameter of the main counter-pulling connecting screw rod (6) is more than or equal to 30 mm; inferior is to drawing the diameter of connecting screw (7) and is 16 ~ 24mm, just main is not less than 2 times main to drawing connecting screw (6) diameter to the distance of the contact surface of main frictional contact rigid body (4) and structure post to drawing connecting screw (6), inferior is not less than 2 times to drawing connecting screw (7) diameter to the distance of the contact surface of inferior frictional contact rigid body (5) and structure post to drawing connecting screw (7).
6. The assembled self-balancing steel underpinning device according to claim 2, wherein the main counter-force supporting rigid body (2) is a hollow box-shaped structure, a plurality of stiffening ribs (8) are welded inside the main counter-force supporting rigid body, and the stiffening ribs (8) positioned on the main counter-force supporting rigid body (2) are coaxial with the boom supports (9) and the jacks (1);
the secondary counter-force support rigid body (3) is of a hollow box type structure, a plurality of stiffening ribs (8) are welded in the secondary counter-force support rigid body, and the stiffening ribs (8) located on the secondary counter-force support rigid body (3) are coaxial with the jack (1).
7. The assembled self-balancing steel underpinning device according to claim 6, characterized in that the thickness of the stiffening ribs (8) is more than or equal to 10 mm.
8. The assembled self-balancing steel underpinning device according to claim 6, wherein the number of the jacks (1) between the main counter force support rigid body (2) and the structural column is 1-4; the number of the jacks (1) between the secondary counter-force support rigid body (3) and the structural column is 1-2.
9. The assembled self-balancing steel underpinning device according to claim 1, wherein the width of the main friction contact rigid body (4) and the secondary friction contact rigid body (5) is more than or equal to 200mm, one side of the main friction contact rigid body (4) and the secondary friction contact rigid body (5) which is abutted with the structural column is provided with a wave-shaped rough surface, and the height between the middle wave crest and the wave trough of the wave-shaped rough surface is more than or equal to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366465.7U CN209908005U (en) | 2019-03-20 | 2019-03-20 | Assembled self-balancing steel underpins device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366465.7U CN209908005U (en) | 2019-03-20 | 2019-03-20 | Assembled self-balancing steel underpins device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908005U true CN209908005U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920366465.7U Active CN209908005U (en) | 2019-03-20 | 2019-03-20 | Assembled self-balancing steel underpins device |
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|---|---|
| CN (1) | CN209908005U (en) |
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2019
- 2019-03-20 CN CN201920366465.7U patent/CN209908005U/en active Active
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