Foundation pit construction building deformation detection device

Abstract

The utility model relates to a foundation pit construction building deformation detection device, and belongs to the technical field of foundation pit detection, the foundation pit construction building deformation detection device comprises supporting piles attached to the wall of a foundation pit, pile tops fixedly installed at the top ends of the supporting piles and a fence used for comparing the horizontal deviation positions of the pile tops, and an inner supporting structure is arranged between the two supporting piles. According to the building deformation detection device for foundation pit construction, the supporting piles and the transverse rod component supporting structure are arranged and arranged in the foundation pit, the fence is flatly laid on the surface of the foundation pit soil body, so that deformation during foundation pit construction can be visually reflected through the displacement of the fence and the supporting piles, the inner rods and the abutting pieces are arranged between the supporting rods, and the deformation detection accuracy is improved. When the supporting rod is deflected and deformed by internal force, the abutting piece is pushed to slide on the surface of the inner rod, and the calibration block is arranged in advance, so that the deformation amount can be obtained only through observation during secondary acceptance, multiple measurement procedures are reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit detection, and specifically to a deformation detection device for buildings under foundation pit construction. Background Art

[0002] Deformation of the foundation pit. When the foundation pit is excavated, the unloading of the excavation in the pit causes the retaining structure to move under the action of the internal and external pressure difference, which in turn causes the deformation of the soil outside the retaining structure, resulting in the settlement and movement of the soil outside the foundation pit or buildings (structures).

[0003] A search of the utility model with announcement number CN220583347U reveals a device for detecting deformation of buildings during foundation pit construction. The device comprises a mobile locomotive and a deformation detection mechanism. The mobile locomotive is topped with a swing mechanism, and a length-adjustable deformation detection mechanism is mounted at its end. The swing mechanism adjusts the angle of the deformation detection mechanism. By positioning the mobile locomotive within or outside the foundation pit, and adjusting the angle of the deformation detection mechanism, the device measures the pit's settlement and pit wall deformation. The deformation detection mechanism is then controlled to move along the length of the pit in conjunction with the movement of the mobile locomotive, enabling automated, long-distance deformation detection of the pit. This device offers high detection accuracy, mobile measurement, and a wide range of applications.

[0004] In the above-mentioned existing technical solutions, the detection method using a mobile vehicle equipped with a detection instrument requires an accurate measurement before the foundation pit is deformed. At the same time, measurement and comparison are required in the middle and late stages of the foundation pit deformation. There are many measurement steps for comparing the deformation benchmark, which is time-consuming. Therefore, a deformation detection device for foundation pit construction buildings is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In response to the deficiencies in the prior art, the present application provides a device for detecting deformation of buildings during foundation pit construction, which has the advantages of being set in the foundation pit for real-time detection of deformation.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a device for detecting deformation of a building during foundation pit construction, comprising support piles attached to the foundation pit wall, pile tops fixedly mounted on the tops of the support piles, and a fence for comparing the horizontal offset positions of the pile tops, wherein an internal support structure is provided between two of the support piles;

[0007] The supporting structure includes an abutment abutting between the supporting piles and an inner rod slidably connected to the abutment, a sliding block is integrally connected to the abutment, and openings are passed through the sliding block on the left and right sides. The sliding block is slidably connected to the inner rod, and a top rod extending to the outside of the inner rod is also slidably installed inside the inner rod. The abutment is integrally connected to an I-beam on one end facing the supporting pile, one end of the top rod is fixedly connected to the I-beam, and a spring is connected between the end of the top rod located inside the inner rod and the inner cavity wall of the inner rod.

[0008] Furthermore, the supporting piles include two, the two supporting piles are attached to both sides of the foundation pit, and a cross bar is fixedly connected between the two pile tops.

[0009] Furthermore, an auxiliary rod for comparing the groundwater levels inside and outside the pit is fixedly installed on the outside of the support pile.

[0010] Furthermore, a comparison ring slidably connected to the support pile is inserted into the bottom of the pile top, and the comparison ring corresponds to the diameter of the support pile.

[0011] Furthermore, a calibration block located in the middle of the inner rod is fixedly mounted on the outside of the inner rod.

[0012] Furthermore, one end of the spring is fixedly connected to the push rod, and the other end of the spring is fixedly connected to the inner wall of the inner rod.

[0013] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0014] The device for detecting deformation of buildings during foundation pit construction is constructed by arranging support piles and a crossbar support structure built into the foundation pit, and by laying a fence on the surface of the foundation pit soil, so that deformation during foundation pit construction can be intuitively reflected through the displacement of the fence and the support piles. By arranging an inner rod and an abutment between the support rods, when the support rod is skewed and deformed by internal force, the abutment is pushed to slide on the surface of the inner rod. Since a calibration block is pre-arranged, the deformation amount can be obtained by observation during the second acceptance, thereby reducing multiple measurement processes and improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a bottom view of the pile top for this application;

[0017] Figure 3 This is a structural three-dimensional diagram of the abutment member of this application;

[0018] Figure 4 This is a schematic diagram of the structure of the inner rod of this application.

[0019] In the figure: 1. Support pile; 2. Auxiliary rod; 3. Pile top; 4. Cross bar; 5. Fence; 6. Abutment; 61. Sliding block; 62. I-beam; 7. Inner rod; 71. Push rod; 72. Spring; 73. Calibration block; 8. Comparison ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] See also Figures 1 to 4 In this embodiment, a deformation detection device for a foundation pit construction building includes a supporting pile 1 attached to the foundation pit wall, a pile top 3 fixedly installed on the top of the supporting pile 1, and a fence 5 for comparing the horizontal offset position of the pile top 3, wherein the supporting piles 1 include two, the two supporting piles 1 are attached to both sides of the foundation pit, and a cross bar 4 is fixedly connected between the two pile tops 3 to maintain the position of the two supporting piles 1.

[0022] In this embodiment, an auxiliary rod 2 for comparing the groundwater levels inside and outside the pit is fixedly installed on the outside of the support pile 1.

[0023] It should be noted that the pile top 3 moves synchronously with the displacement of the supporting pile 1 , and the horizontal offset of the pile top 3 can be detected by comparing the displacement of the pile top 3 relative to the fence 5 .

[0024] The bottom of the pile top 3 in this embodiment is also plugged with a comparison ring 8 that is slidably connected to the support pile 1. The comparison ring 8 corresponds to the diameter of the support pile 1. By sliding the comparison ring 8 outside the support pile 1, pipeline deformation can be detected.

[0025] In this embodiment, a support structure is provided between the two support piles 1 for providing internal support force to the support piles 1 , so as to facilitate measurement of foundation pit deviation.

[0026] It should be noted that the supporting structure includes an abutment 6 abutting between the supporting piles 1 and an inner rod 7 slidably connected to the abutment 6, wherein the abutment 6 is integrally connected to an I-beam 62 on one end facing the supporting pile 1 to improve the contact effect between the abutment 6 and the supporting pile 1.

[0027] In this embodiment, a sliding block 61 is integrally connected to the other end of the abutment 6. The sliding block 61 has openings on the left and right sides. The sliding block 61 is slidably connected to the inner rod 7. Through the setting of the sliding block 61, the abutment 6 can slide relative to the inner rod 7.

[0028] In this embodiment, a top rod 71 extending to the outside of the inner rod 7 is also slidably installed inside the inner rod 7, and one end of the top rod 71 is fixedly connected to the I-beam 62. A spring 72 is connected between the end of the top rod 71 located inside the inner rod 7 and the inner cavity wall of the inner rod 7. One end of the spring 72 is fixedly connected to the top rod 71, and the other end of the spring 72 is fixedly connected to the inner wall of the inner rod 7. The spring 72 can push the inner rod 7 to slide relative to the sliding block 61 to detect the amount of deformation of the foundation pit surface pressure on the supporting pile 1.

[0029] It should be noted that a calibration block 73 located in the middle of the inner rod 7 is fixedly installed on the outside of the inner rod 7. The calibration block 73 can conveniently and intuitively compare the sliding offset of the sliding block 61 relative to the inner rod 7, thereby knowing the deformation amount.

[0030] The working principle of the above embodiment is:

[0031] The support piles 1 and auxiliary rods 2 are installed on the inner wall of the foundation pit and supported and fixed by the cross bars 4. Then, the top rod 71 is compressed relative to the inner rod 7 and pressed down between the two support piles 1. It is pushed by the elastic force of the spring 72 so that the two abutments 6 connected to the top rod 71 can abut against the inner wall of the support pile 1 through the I-beam 62 so that the inner rod 7 is supported between the support piles 1. When the foundation pit soil shifts and deforms, the support pile 1 tilts, causing the support pile 1 to exert a force on the abutments 6. By compressing the spring 72, the inner rod 7 is always supported between the support piles 1. At this time, the abutments 6 change their position relative to the inner rod 7 by sliding the sliding block 61. During inspection and acceptance, the horizontal deformation of the foundation pit can be known by comparing the position of the sliding block 61 relative to the calibration block 73. Further, by comparing the pile top 3 relative to the fence 5 and the inclination of the fence 5, the vertical displacement of the ground surface around the support can be known.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A deformation detection device for a foundation pit construction building, comprising a support pile (1) attached to a foundation pit wall, a pile top (3) fixedly mounted on the top of the support pile (1), and a fence (5) for comparing the horizontal offset position of the pile top (3), characterized in that: An internal support structure is provided between the two support piles (1); The supporting structure comprises an abutting member (6) abutting between the supporting piles (1) and an inner rod (7) slidably connected to the abutting member (6), a sliding block (61) is integrally connected to the abutting member (6), and the sliding block (61) has openings extending through the left and right sides. The sliding block (61) is slidably connected to the inner rod (7), and a top rod (71) extending to the outside of the inner rod (7) is also slidably installed inside the inner rod (7), and an I-beam (62) is integrally connected to one end of the abutting member (6) facing the supporting pile (1), and one end of the top rod (71) is fixedly connected to the I-beam (62), and a spring (72) is connected between one end of the top rod (71) located inside the inner rod (7) and the inner cavity wall of the inner rod (7).

2. The device for detecting deformation of a building during foundation pit construction according to claim 1, wherein: The supporting piles (1) include two, the two supporting piles (1) are attached to both sides of the foundation pit, and a crossbar (4) is fixedly connected between the two pile tops (3).

3. The device for detecting deformation of a building during foundation pit construction according to claim 1, wherein: An auxiliary rod (2) for comparing groundwater levels inside and outside the pit is also fixedly mounted on the outside of the support pile (1).

4. The device for detecting deformation of a building during foundation pit construction according to claim 1, wherein: The bottom of the pile top (3) is also plugged with a comparison ring (8) which is slidably connected to the support pile (1), and the comparison ring (8) corresponds to the diameter of the support pile (1).

5. The device for detecting deformation of a building during foundation pit construction according to claim 1, wherein: A calibration block (73) located in the middle of the inner rod (7) is also fixedly mounted on the outside of the inner rod (7).

6. The device for detecting deformation of a building during foundation pit construction according to claim 1, characterized in that: One end of the spring (72) is fixedly connected to the push rod (71), and the other end of the spring (72) is fixedly connected to the inner wall of the inner rod (7).

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