CN215857743U - Supporting structure capable of automatically regulating and controlling deformation - Google Patents
Supporting structure capable of automatically regulating and controlling deformation Download PDFInfo
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- CN215857743U CN215857743U CN202121654653.3U CN202121654653U CN215857743U CN 215857743 U CN215857743 U CN 215857743U CN 202121654653 U CN202121654653 U CN 202121654653U CN 215857743 U CN215857743 U CN 215857743U
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Abstract
The utility model relates to a supporting structure capable of automatically regulating and controlling deformation, which comprises a concrete support, a groove type concrete purlin and a hydraulic jack, wherein the inner side of the groove type concrete purlin is rigidly connected with the concrete support, the outer side of the groove type concrete purlin faces a foundation pit enclosure wall, a plurality of grooves are formed in the outer side of the groove type concrete purlin along the circumferential direction, the hydraulic jack is arranged in the grooves, and two ends of the hydraulic jack respectively abut against the foundation pit enclosure wall and the groove type concrete purlin. Compared with the prior art, the utility model can dynamically regulate and control the axial force of the concrete support according to deformation monitoring during foundation pit construction, can actively provide reliable counter force for the enclosure wall to control deformation, can compensate horizontal deformation generated by creep shrinkage, temperature shrinkage and the like of the concrete, and is beneficial to reducing disturbance to the surrounding environment of the foundation pit.
Description
Technical Field
The utility model belongs to the field of foundation pit supporting engineering, relates to a foundation pit concrete supporting structure, and particularly relates to a supporting structure capable of automatically regulating and controlling deformation.
Background
The concrete supporting structure is a supporting form commonly adopted by soft soil foundation pits, and the concrete support has the advantages of high structural rigidity, high safety degree, flexible arrangement and the like. However, the concrete supports belong to passive stressed structures, that is, the concrete supports can only provide horizontal resistance to the enclosure wall after the enclosure wall of the foundation pit horizontally deforms and horizontally extrudes the concrete supports, that is, "wall deformation is prior and support resistance is later". This passive stress feature is detrimental to the horizontal deformation control of the foundation pit retaining wall. In addition, the phenomena of creep shrinkage and temperature shrinkage of the concrete support of the wide and large foundation pit are obvious, and the phenomena can aggravate the horizontal deformation of the foundation pit enclosure wall and are not beneficial to the protection of the surrounding environment.
Chinese patent CN 111877357a discloses a deep foundation pit concrete support axial force compensation method, which realizes the structural reinforcement of a support beam through a reinforcement column arranged at the inner side of the support beam, heats the reinforcement column through an arranged electric heating wire, realizes the heating of the whole support beam by rapidly and uniformly dispersing heat to each part of the support beam through the reinforcement column, realizes the heating axial force compensation of the whole support beam, and cooperates with a chamfer surface through a set wedge block, and makes the wedge block extrude the shells at two sides to two sides under the tightening of a tightening screw to realize the further axial force compensation of the support beam. The axial force compensation is carried out in a heating mode, and the axial force compensation degree is difficult to control; and no matter the mode of heating or the mode of applying force to the shells to realize that the two shells apply force to the two ends and apply force to the supporting beam through the inserting block to realize the axial force compensation of the supporting beam, certain adverse effect can be caused to the structure of the supporting beam.
SUMMERY OF THE UTILITY MODEL
The present invention aims at providing one kind of support structure with automatic deformation regulation and control to overcome the demerits of available technology. The axial force of the concrete support can be dynamically regulated and controlled according to deformation monitoring during foundation pit construction, reliable counter force control deformation can be actively provided for the enclosure wall, horizontal deformation generated by creep shrinkage, temperature shrinkage and the like of the concrete can be compensated, and disturbance to the surrounding environment of the foundation pit can be reduced.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a supporting structure capable of automatically regulating and controlling deformation, which comprises a concrete support, a groove type concrete purlin and a hydraulic jack, wherein the inner side of the groove type concrete purlin is rigidly connected with the concrete support, the outer side of the groove type concrete purlin faces a foundation pit enclosure wall, a plurality of grooves are formed in the outer side of the groove type concrete purlin along the circumferential direction, the hydraulic jack is arranged in each groove, and two ends of each hydraulic jack respectively abut against the foundation pit enclosure wall and the groove type concrete purlin.
Preferably, the supporting structure further comprises a controller and a deformation monitor, wherein the deformation monitor is used for measuring the horizontal deformation of the foundation pit enclosure wall and the separation distance between the groove type concrete purlin and the foundation pit enclosure wall in real time and feeding back deformation data to the controller; the controller is used for adjusting the jacking force of the hydraulic jack in real time.
Preferably, the deformation monitor comprises an automatic inclinometer for measuring the horizontal deformation of the foundation pit enclosure wall in real time, and a laser ranging system or a machine vision system for measuring the separation distance between the groove type concrete enclosure purlin and the foundation pit enclosure wall in real time.
Preferably, a supporting plate for placing a hydraulic jack is arranged in the groove.
Preferably, the concrete support is provided with steel columns.
Preferably, the steel column is a lattice type angle steel column, a steel pipe or section steel.
Preferably, the supporting structure further comprises a suspension member, and the suspension member is used for connecting and fixing the groove type concrete purlin and the previous concrete support.
Preferably, the suspension member is made of steel strand, steel bar or section steel.
Preferably, the suspension member is vertically arranged or obliquely arranged at a position close to the steel upright.
Preferably, the supporting structure further comprises section steel supports arranged on two sides of the hydraulic jack after the hydraulic jack separates the foundation pit enclosure wall from the groove type concrete enclosure purlin, and the section steel supports are used for preventing the foundation pit enclosure wall from deforming and breaking suddenly due to accidental failure of the hydraulic jack.
In the utility model, when the hydraulic jack does not provide jacking force, the water-soil side pressure of the foundation pit is directly transmitted to the groove type concrete purlin and the concrete support through the foundation pit enclosure wall; when the hydraulic jack provides jacking force, the foundation pit enclosure wall and the groove type concrete enclosure purlin can be jacked open, the water and soil side pressure of the foundation pit is transmitted to the hydraulic jack through the foundation pit enclosure wall, and then transmitted to the groove type concrete enclosure purlin and the concrete support through the hydraulic jack.
The second aspect of the present invention provides an implementation method of the support structure capable of automatically regulating and controlling deformation, including the following steps:
s1: constructing a foundation pit enclosure wall and a steel upright post;
s2: after the foundation pit is excavated to a preset elevation, constructing a groove type concrete purlin and a concrete support;
s3: mounting a suspension member and fixing the groove type concrete purlin;
s4: when the groove type concrete enclosing purlin and the concrete support reach the strength, the hydraulic jack exerts jacking force to jack the foundation pit enclosing wall and the groove type concrete enclosing purlin open;
s5: the deformation monitor measures the horizontal deformation of the foundation pit enclosure wall and the separation distance between the groove type concrete enclosing purlin and the foundation pit enclosure wall in real time, the deformation data is fed back to the controller, and the controller adjusts the jacking force of the hydraulic jack in real time to control the deformation.
S6: and after the foundation pit enclosure wall and the groove type concrete enclosure purlin are separated by the hydraulic jack, the profile steel supports are arranged on two sides of the hydraulic jack.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the axial force of the concrete support can be dynamically regulated and controlled according to deformation monitoring during foundation pit construction, reliable counter force control deformation can be actively provided for the enclosure wall, horizontal deformation generated by creep shrinkage, temperature shrinkage and the like of the concrete can be compensated, and disturbance to the surrounding environment of the foundation pit can be reduced.
(2) The hydraulic jack is arranged between the enclosing purlin and the ground wall, so that the jack and the support are more flexibly arranged, and the jack and the support can be arranged on a plane without influencing each other.
(3) The hydraulic jack is arranged in the groove of the enclosing purlin, the installation and dismantling construction of the jack is simple and convenient, only the steel plate needs to be embedded, and complex connecting nodes are not needed. In addition, can set up the shaped steel support in the recess, prevent the deformation sudden change risk that the jack accident became invalid and cause.
Drawings
Fig. 1 is a schematic layout of the support structure of the present invention.
Fig. 2 is a schematic layout of the hydraulic jack of the present invention.
Fig. 3 is a schematic view of the vertical arrangement of the suspension member of the present invention.
Fig. 4 is a schematic view of the suspension member of the present invention disposed diagonally adjacent to a steel upright.
FIG. 5 is a schematic view showing the arrangement of the section steel supports of the present invention.
In the figure, 1 is a foundation pit enclosure wall, 20 is a groove type concrete enclosing purlin, 21 is a groove, 22 is a supporting plate, 3 is a concrete support, 4 is a steel upright post, 5 is a hydraulic jack, 52 is a section steel support, and 6 is a suspension component.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
Example 1
The utility model provides an automatic bearing structure who regulates and control deformation, as shown in fig. 1 ~ 2, including concrete support 3, the recess formula concrete encloses purlin 20 and hydraulic jack 5, the inboard and the concrete support 3 rigid connection of purlin 20 are enclosed to the recess formula concrete, the outside that the purlin 20 is enclosed to the recess formula concrete encloses the foundation ditch enclosure wall 1, and the outside that the purlin 20 is enclosed to the recess formula concrete is equipped with a plurality of recesses 21 along the circumferential direction, hydraulic jack 5 sets up in recess 21, both ends support respectively on foundation ditch enclosure wall 1 and recess formula concrete enclosure purlin 20.
The supporting structure of the utility model is in operation: when the hydraulic jack 5 does not provide jacking force (is not loaded), the water-soil side pressure of the foundation pit is directly transmitted to the groove type concrete purlin 20 and the concrete support 3 through the foundation pit enclosure wall 1; when the hydraulic jack 5 provides jacking force (loading), the foundation pit enclosure wall 1 and the groove type concrete enclosing purlin 20 can be jacked open, and then the lateral pressure of the foundation pit water and soil is transmitted to the hydraulic jack 5 through the foundation pit enclosure wall 1 and then transmitted to the groove type concrete enclosing purlin 20 and the concrete support 3 through the hydraulic jack 5.
In this embodiment, the support structure preferably further comprises a controller and a deformation monitor, wherein the deformation monitor is used for measuring the horizontal deformation of the foundation pit enclosure wall 1 and the separation distance between the groove-type concrete purlin 20 and the foundation pit enclosure wall 1 in real time and feeding back deformation data to the controller; the controller is used for adjusting the jacking force of the hydraulic jack 5 in real time. It is further preferred that the deformation monitor comprises an automated inclinometer for measuring the horizontal deformation of the foundation pit enclosure wall 1 in real time, and a laser ranging system or a machine vision system for measuring the separation distance of the groove-type concrete purlin 20 from the foundation pit enclosure wall 1 in real time. The horizontal deformation of the foundation pit enclosure wall 1 can be measured in real time by an automatic inclinometer through an inclined hole of a conventional wall body. The separation distance between the groove type concrete purlin 20 and the foundation pit enclosure wall 1 is measured in real time by arranging a laser range finder in a groove 21 of the groove type concrete purlin 20 and fixing the laser range finder on two sides of the hydraulic jack 5; or real-time measurements by a machine vision system. Therefore, the supporting structure of the embodiment can dynamically regulate and control the axial force of the concrete support 3 according to deformation monitoring during foundation pit construction, can actively provide reliable counter force to the foundation pit enclosure wall 1 to control deformation, can compensate horizontal deformation caused by creep shrinkage, temperature shrinkage and the like of concrete, and is beneficial to reducing disturbance to the surrounding environment of the foundation pit. The controller can adopt a PLC controller or a microcomputer.
The support structure can be operated by manually controlling the hydraulic jack 5 (by manually measuring the horizontal deformation of the foundation pit enclosure wall 1 and the separation distance between the groove type concrete purlin 20 and the foundation pit enclosure wall 1 and controlling the hydraulic jack 5), and can also be operated by automatically controlling the hydraulic jack 5. Preferably in an automatically controlled manner.
The groove 21 of the utility model is internally provided with a supporting plate 22 for placing the hydraulic jack 5, the structure of the groove 21 can be seen in figures 1 and 2, the top of the groove 21 is open, and one end of the outer side of the groove is communicated with the groove type concrete purlin 20. The hydraulic jack 5 is placed on the pallet 22 in the recess 21.
The concrete support 3 may also be provided with steel uprights 4. The steel column 4 can adopt lattice type angle steel columns, steel pipes or section steel. In this embodiment, the steel column 4 is a lattice type angle steel column.
The supporting structure also comprises a suspension member 6, as shown in fig. 3 and 4, wherein the suspension member 6 is used for connecting and fixing the groove type concrete purlin 20 with the previous concrete support 3. Because the horizontal pressure of the first concrete support 3 is small, the deformation control requirement is not high, and the first concrete support 3 is often used for construction of a construction trestle and bears a larger vertical load, the first concrete support 3 is rigidly connected with the top ring beam of the foundation pit enclosure wall 1, and a jack is not arranged. The suspension member 6 can adopt a steel strand, a steel bar or a section steel. The suspension member 6 may be disposed vertically (as shown in fig. 3) or diagonally (as shown in fig. 4) near the steel column.
In this embodiment, as shown in fig. 5, the supporting structure further includes profile steel supports 52 disposed on two sides of the hydraulic jack 5 after the hydraulic jack 5 disengages the foundation pit enclosure wall 1 from the recessed concrete purlin 20, and the profile steel supports 52 are used to prevent the foundation pit enclosure wall 1 from deforming and changing suddenly due to an accidental failure of the hydraulic jack 5.
The implementation method of the supporting structure capable of automatically regulating and controlling deformation comprises the following steps:
s1: constructing a foundation pit enclosure wall 1 and steel columns 4;
s2: after the foundation pit is excavated to a preset elevation, constructing a groove type concrete purlin 20 and a concrete support 3;
s3: mounting a suspension member 6 and fixing a groove type concrete purlin 20;
s4: when the groove type concrete purlin 20 and the concrete supports 3 reach the strength, the hydraulic jack 5 applies jacking force to jack the foundation pit enclosure wall 1 and the groove type concrete purlin 20 open;
s5: the deformation monitor measures the horizontal deformation of the foundation pit enclosure wall 1 and the separation distance between the groove type concrete purlin 20 and the foundation pit enclosure wall 1 in real time, and feeds back deformation data to the controller, and the controller adjusts the jacking force of the hydraulic jack 5 in real time to achieve the purpose of controlling the deformation;
s6: and after the hydraulic jack 5 separates the foundation pit enclosure wall 1 from the groove type concrete purlin 20, profile steel supports 52 are arranged on two sides of the hydraulic jack 5.
The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The utility model provides an automatic bearing structure who regulates and control deformation, a serial communication port, including concrete support (3), purlin (20) and hydraulic jack (5) are enclosed to recess formula concrete, the inboard and concrete support (3) rigid connection that purlin (20) are enclosed to recess formula concrete, recess formula concrete encloses the outside of purlin (20) and towards foundation ditch enclosure wall (1), and the outside that purlin (20) are enclosed to recess formula concrete is equipped with a plurality of recesses (21) along the circumferential direction, hydraulic jack (5) set up in recess (21), both ends support respectively on foundation ditch enclosure wall (1) and recess formula concrete enclosure purlin (20).
2. The supporting structure capable of automatically regulating and controlling the deformation according to claim 1, wherein the supporting structure further comprises a controller and a deformation monitor, the deformation monitor is used for measuring the horizontal deformation of the foundation pit enclosure wall (1) and the separation distance between the groove type concrete enclosure purlin (20) and the foundation pit enclosure wall (1) in real time, and feeding back the deformation data to the controller; the controller is used for adjusting the jacking force of the hydraulic jack (5) in real time.
3. The supporting structure capable of automatically regulating and controlling deformation according to claim 2, wherein the deformation monitor comprises an automatic inclinometer for measuring the horizontal deformation of the foundation pit enclosing wall (1) in real time, and a laser ranging system or a machine vision system for measuring the separation distance between the groove type concrete enclosing purlin (20) and the foundation pit enclosing wall (1) in real time.
4. The supporting structure capable of automatically regulating and controlling deformation as claimed in claim 1, wherein a supporting plate (22) for placing the hydraulic jack (5) is arranged in the groove (21).
5. A support structure with automatic deformation regulation according to claim 1, characterized in that the concrete support (3) is provided with steel uprights (4).
6. The supporting structure with automatic deformation regulation and control of claim 5, characterized in that, the steel upright column (4) adopts lattice type angle steel column, steel pipe or section steel.
7. The supporting structure capable of automatically regulating and controlling deformation according to claim 1, characterized in that the supporting structure further comprises a suspension member (6), and the suspension member (6) is used for connecting and fixing the groove type concrete purlin (20) and the previous concrete support (3).
8. The supporting structure capable of automatically regulating and controlling deformation as claimed in claim 7, wherein the suspension member (6) is made of steel strand, steel bar or steel section.
9. The supporting structure with automatic deformation regulation of claim 7, characterized in that the suspension members (6) are vertically arranged or obliquely arranged near the steel columns.
10. The supporting structure capable of automatically regulating and controlling deformation as claimed in claim 1, wherein the supporting structure further comprises section steel supports (52) arranged on two sides of the hydraulic jack (5) after the hydraulic jack (5) disconnects the foundation pit enclosure wall (1) from the groove type concrete enclosure purlin (20), and the section steel supports (52) are used for preventing the deformation and sudden change of the foundation pit enclosure wall (1) caused by the accidental failure of the hydraulic jack (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121654653.3U CN215857743U (en) | 2021-07-20 | 2021-07-20 | Supporting structure capable of automatically regulating and controlling deformation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121654653.3U CN215857743U (en) | 2021-07-20 | 2021-07-20 | Supporting structure capable of automatically regulating and controlling deformation |
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| CN215857743U true CN215857743U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404059A (en) * | 2021-07-20 | 2021-09-17 | 同济大学建筑设计研究院(集团)有限公司 | Supporting structure capable of automatically regulating deformation and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404059A (en) * | 2021-07-20 | 2021-09-17 | 同济大学建筑设计研究院(集团)有限公司 | Supporting structure capable of automatically regulating deformation and implementation method thereof |
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