CN216664147U - Foundation pit support replacing device - Google Patents
Foundation pit support replacing device Download PDFInfo
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- CN216664147U CN216664147U CN202122497298.XU CN202122497298U CN216664147U CN 216664147 U CN216664147 U CN 216664147U CN 202122497298 U CN202122497298 U CN 202122497298U CN 216664147 U CN216664147 U CN 216664147U
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- foundation pit
- replacing device
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- waist rail
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Abstract
The utility model relates to the technical field of building construction, and discloses a foundation pit support replacing device which comprises waist beams, an anti-shearing frame and supporting plates, wherein the waist beams are horizontally arranged and are perpendicular to supporting piles, the lower end faces of the waist beams are tightly attached to the peripheries of the supporting piles, the anti-shearing frame is provided with a plurality of supporting plates and is arranged at the lower ends of the waist beams at intervals along the length direction of the waist beams, the anti-shearing frame is arranged between two adjacent supporting piles, one side of the anti-shearing frame is tightly attached to the periphery of one supporting pile, one end of each supporting plate is connected with the upper end of each waist beam, and the other end of each supporting plate is embedded in a basement wall. The utility model can transmit horizontal normal pressure and horizontal tangential pressure between the support pile and the basement wall through the foundation pit support replacing device, prevent the support pile or the basement wall from being crushed, and has the advantages of short operation time and high operation efficiency.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a foundation pit support replacing device.
Background
At present, the common basement support changing form in China is as follows:
1. the replacement support plates on the periphery of the foundation bottom plate are filled with concrete with the same grade as the foundation bottom plate, and low-compressibility isolation materials are arranged between the replacement supports and the enclosure bodies;
2. the support replacement between the enclosure body and each underground structure generally adopts a reinforced concrete support replacement plate strip mode, the support replacement plate strip and the underground structure are synchronously cast and constructed, the concrete elevation can be the same as the concrete label of the adjacent underground structure member, and the support replacement plate strip is calculated and appropriately reinforced according to the operation load of a constructor;
however, the basement support changing form has the following disadvantages:
1. the existing support changing mode can only transmit the horizontal normal pressure of the enclosure structure and cannot transmit the horizontal tangential force of the corner area of the foundation pit;
2. the support plate strip is provided with channels for wall-opening waterproof construction operation at intervals, the channels are used as channels for constructors to dismantle external wall templates and for dense backfill treatment between external enclosure bodies and external walls, the size of an opening can meet the passing requirements of the constructors, the size of a support opening is at least 1000 x 800mm at present, the support opening is arranged on a plane at intervals, and the center distance of the opening is generally controlled to be about 6 m. In actual construction, the opening still causes great inconvenience to the working conditions of external wall template removal, wall waterproof construction and dense backfill outside the wall, and the settlement of the peripheral ground surface is too large after the support is removed due to the fact that the external wall backfill is narrow and difficult to be dense in the working surface;
3. the effect of the space enclosing structure on resisting horizontal tangential force and vertical water buoyancy in the corner area is not fully utilized, so that a basement foundation needs to spend a large amount of resources to meet the requirements of the basement on resisting floating and lateral movement.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the foundation pit support changing device can transmit the horizontal normal force of the support pile and the horizontal tangential force of the basement wall, and is short in operation time and high in operation efficiency.
In order to solve the technical problem, the utility model provides a foundation pit support replacing device which comprises waist beams, a shear-resistant frame and a support plate, wherein the waist beams are horizontally arranged and are perpendicular to support piles, the lower end faces of the waist beams are tightly attached to the peripheries of the support piles, the shear-resistant frame is provided with a plurality of shear-resistant frames which are arranged at the lower ends of the waist beams at intervals along the length direction of the waist beams, the shear-resistant frame is arranged between two adjacent support piles, one side of the shear-resistant frame is tightly attached to the periphery of one support pile, the lower ends of the support plate are connected with the upper ends of the waist beams, and the upper ends of the support plates are embedded in a basement wall.
According to the preferable scheme of the utility model, the waist rail comprises an upper steel plate, a lower steel plate and I-shaped steel, the number of the I-shaped steel is two, the I-shaped steel is arranged at intervals along the length direction of the support pile, the number of the upper steel plate is multiple, the upper steel plate is arranged at intervals along the length direction of the I-shaped steel on the upper end surfaces of the two I-shaped steel, and the number of the lower steel plate is multiple, the lower steel plate is arranged at intervals along the length direction of the I-shaped steel on the lower end surfaces of the two I-shaped steel.
As the preferable scheme of the utility model, the shear frame is provided with two shear frames which are respectively arranged corresponding to the two I-shaped steels.
As a preferable scheme of the utility model, an inner ribbed plate is connected between the two I-shaped steels, and the end face of the inner ribbed plate is connected with the upper steel plate.
In a preferred embodiment of the present invention, an outer rib plate is connected to an outer side surface of the i-steel.
As a preferable scheme of the utility model, the shear frame is a tripod.
As a preferable scheme of the utility model, the shear frame comprises a vertical plate, an inclined plate and a connecting plate, one end of the vertical plate is connected with the waist beam, the other end of the vertical plate is connected with one end of the inclined plate, the other end of the inclined plate is connected with the waist beam, the vertical plate and the inclined plate are enclosed to form a triangular hole, and the connecting plate is arranged in the triangular hole.
As the preferable scheme of the utility model, the vertical plates are perpendicular to the waist rail, and the bottom corners of the connecting plates are provided with chamfer structures.
As a preferable aspect of the present invention, the thickness of the connecting plate is smaller than that of the inclined plate.
In a preferred embodiment of the present invention, the support plate is an i-shaped steel plate.
Compared with the prior art, the foundation pit support replacing device has the advantages that:
according to the utility model, horizontal normal pressure and horizontal tangential pressure can be transmitted between the supporting pile and the basement wall through the foundation pit support replacing device, the supporting pile or the basement wall is prevented from being crushed, and through on-site practice and checking calculation, the local support dismantling time of the foundation pit can be advanced by 90-120 days, the time for dismantling the external wall formwork and constructing the external wall for waterproofing can be shortened by 7 days/square meter, the uplift pile engineering quantity is reduced by about 10%, the ground surface settlement can be reduced by more than 10mm after the basement is backfilled and covered with soil, the operation time is greatly shortened, and the operation efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a foundation pit support replacing device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view taken in the direction B-B in fig. 1.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, the preferred embodiment of the foundation pit bracing replacing device provided by the utility model comprises a wale 1, a shear frame 2 and a supporting plate 3, wherein the wale 1 is horizontally arranged and is vertically arranged with a supporting pile a, the lower end surface of the wale 1 is tightly attached to the periphery of the supporting pile a, a plurality of shear frames 2 are arranged at the lower end of the wale 1 at intervals along the length direction of the wale 1, the shear frame 2 is arranged between two adjacent supporting piles a, one side of the shear frame 2 is tightly attached to the periphery of one supporting pile a, the lower end of the supporting plate 3 is connected with the upper end of the wale 1, and the upper end of the supporting plate 3 is embedded in a basement wall b; specifically, the wale 1 and the shear frame 2, and the wale 1 and the support plate 3 are welded.
It should be further noted that the shear frame 2 is welded with the support piles a, so that the foundation pit support replacing device has an anti-floating effect, and the stability of the foundation pit support replacing device is improved; the foundation pit fertilizer groove is backfilled and compacted to the position of the elevation of the foundation pit support replacing device, the whole foundation pit support replacing device is sealed by pouring concrete, and the durability of the foundation pit support replacing device is improved.
When the support piles a receive horizontal normal pressure (namely, pressure in the vertical direction in fig. 1), the pressure is transmitted to the basement wall b through the support piles a along the waist beam 1 and the support plate 3 in sequence, so that the basement wall b provides supporting force; when the basement wall b is subjected to horizontal tangential pressure (namely pressure in the left-right direction in the figure 1), the pressure is transmitted to the support pile a through the basement wall b along the support plate 3, the waist beam 1 and the shear frame 2 in sequence, so that the support pile a provides support force; therefore, the horizontal normal pressure and the horizontal tangential pressure can be transmitted between the supporting pile a and the basement wall b through the foundation pit support replacing device, and the supporting pile a or the basement wall b is prevented from being crushed, and by adopting the foundation pit support replacing device, the local support dismantling time of the foundation pit can be advanced by 90-120 days through on-site practice and calculation, the water-proof time for dismantling the external wall formwork and constructing the external wall can be shortened by 7 days/square meter, the uplift pile engineering quantity is reduced by about 10%, the ground surface settlement can be reduced by more than 10mm after the basement is backfilled and covered with soil, the operation time is greatly shortened, and the operation efficiency is improved.
Illustratively, the wale 1 includes an upper steel plate 11, a lower steel plate 12 and i-beams 13, the i-beams 13 are provided with two and are arranged at intervals along the length direction of the support pile a, the upper steel plate 11 is provided with a plurality of and is arranged at the upper end surfaces of the two i-beams 13 at intervals along the length direction of the i-beams 13, the lower steel plate 12 is provided with a plurality of and is arranged at the lower end surfaces of the two i-beams 13 at intervals along the length direction of the i-beams 13, the upper steel plate 11, the lower steel plate 12 and the i-beams 13 are preferably welded, the shear frame 2 is provided with two and is respectively arranged corresponding to the two i-beams 13, an inner rib plate 14 is connected between the two i-beams 13, the end surface of the inner rib plate 14 is connected with the upper steel plate 11, the outer side surface of the i-beams 13 is connected with an outer rib plate 15, specifically, the upper surface of the inner rib plate 14 is of a chamfered structure, the shape and the structure of the inner rib plate 14 are simplified, so that the processing difficulty of the inner rib plate 14 is reduced, and meanwhile, the connection between the inner rib plate 14 and the waist rail 1 is more stable, so that the contact area between the inner rib plate 14 and the support pile a is increased, and the force transmission is ensured; the lower steel plates 12 are of an integral structure, and the bending resistance of the waist rail 1 is enhanced by using the characteristics of wide flange and high lateral rigidity of the I-shaped steel 13.
Illustratively, to increase the stability of the shear frame 2, the shear frame 2 is a tripod.
Exemplarily, the shear frame 2 includes riser 21, swash plate 22 and connecting plate 23, the one end of riser 21 with waist rail 1 is connected, the other end of riser 21 with the one end of swash plate 22 is connected, the other end of swash plate 22 with waist rail 1 is connected, riser 21 and swash plate 22 enclose to close and form the triangle-shaped hole, connecting plate 23 sets up the triangle-shaped is downthehole, preferably weld between riser 21, swash plate 22 and the connecting plate 23, riser 21 with waist rail 1 sets up perpendicularly, the base angle department of connecting plate 23 is equipped with the chamfer structure, the thickness of connecting plate 23 is less than the thickness of swash plate 22, with the shape structure simplification of connecting plate 23 to reduce the processing degree of difficulty of connecting plate 23, make connecting plate 23 and riser 21 and 22's being connected more firm simultaneously.
Exemplarily, the supporting plate 3 is an I-shaped steel plate, so that the load of the foundation pit support replacing device is guaranteed, the structural dead weight and the structural design internal force of the foundation pit support replacing device are reduced, the cost is low, the precision is high, and the residual stress is small.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a foundation ditch trades props device, its characterized in that includes waist rail, shear frame and backup pad, the waist rail is the level and arranges and set up perpendicularly with a fender pile, the periphery of a fender pile is hugged closely to the lower terminal surface of waist rail, it has a plurality ofly and follows to shear the frame the length direction interval of waist rail sets up the lower extreme of waist rail, shear frame set up between two adjacent fender piles just one side of shear frame hugs closely the periphery of a fender pile, the lower extreme of backup pad with the upper end of waist rail is connected, the upper end of backup pad inlays and connects on the basement wall body.
2. The foundation pit bracing replacing device according to claim 1, wherein the wale comprises two upper steel plates, two lower steel plates and two I-shaped steel, the two I-shaped steel are arranged at intervals along the length direction of the support pile, the plurality of upper steel plates are arranged on the upper end surfaces of the two I-shaped steel at intervals along the length direction of the I-shaped steel, and the plurality of lower steel plates are arranged on the lower end surfaces of the two I-shaped steel at intervals along the length direction of the I-shaped steel.
3. The foundation pit bracing replacing device according to claim 2, wherein the shear frame is provided with two and arranged corresponding to the two i-beams respectively.
4. The foundation pit support replacing device according to claim 2, wherein an inner rib plate is connected between the two i-shaped steels, and the end face of the inner rib plate is connected with the upper steel plate.
5. The foundation pit bracing replacing device according to claim 2, wherein an outer rib plate is connected to the outer side surface of the i-steel.
6. The foundation pit bracing replacement device according to claim 1, wherein the shear frame is a tripod.
7. The foundation pit bracing device of claim 6, wherein the shear frame comprises a vertical plate, an inclined plate and a connecting plate, one end of the vertical plate is connected with the waist rail, the other end of the vertical plate is connected with one end of the inclined plate, the other end of the inclined plate is connected with the waist rail, the vertical plate and the inclined plate enclose to form a triangular hole, and the connecting plate is arranged in the triangular hole.
8. The foundation pit bracing replacing device according to claim 7, wherein the vertical plates are perpendicular to the wale, and a chamfer structure is provided at the bottom corner of the connecting plate.
9. The foundation pit support replacing device of claim 7, wherein the thickness of the connecting plate is smaller than that of the inclined plate.
10. A foundation pit bracing replacement device according to any one of claims 1 to 9, wherein the support plate is an i-shaped steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122497298.XU CN216664147U (en) | 2021-10-15 | 2021-10-15 | Foundation pit support replacing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122497298.XU CN216664147U (en) | 2021-10-15 | 2021-10-15 | Foundation pit support replacing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216664147U true CN216664147U (en) | 2022-06-03 |
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ID=81764858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122497298.XU Active CN216664147U (en) | 2021-10-15 | 2021-10-15 | Foundation pit support replacing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216664147U (en) |
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2021
- 2021-10-15 CN CN202122497298.XU patent/CN216664147U/en active Active
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