Method for monitoring settlement and deviation of deep foundation pit supporting structure

Abstract

The invention discloses a method for monitoring settlement and deviation of a deep foundation pit supporting structure. Comprising the following steps: S1, manufacturing a base bracket; s2, manufacturing a scale vertical rod; s3, scale instruments are installed on the four faces of the upper portion of the scale vertical rod respectively, each scale instrument comprises a dial plate and a pointer, scales of the dial plate are semicircular, and the pointers point to the zero position of the dial plate in the vertical state; s4, a base support is installed on the supporting structure; s5, the scale vertical rod is installed in the supporting rod of the base support, and the scale vertical rod is adjusted to be in a vertical state; and S6, when the foundation pit supporting structure deviates, the index of the pointer on the scale instrument is the offset of the deep foundation pit supporting structure. The deep foundation pit is monitored more efficiently and quickly, the cost is saved, and the construction progress is accelerated; the monitoring device is provided with scales, so that the operation is very visual and clear; the monitoring device is light, small and exquisite, can be recycled for multiple times, occupies a small area, is convenient to transport, and can be completely utilized for multiple times.

Description

Technical Field

[0001] The invention relates to foundation pit monitoring, in particular to a method for monitoring the settlement and deviation of a deep foundation pit support structure. Background Art

[0002] Deep foundation pit problems are often encountered in the construction of housing projects, road projects, mining projects, water conservancy projects, etc. The deep foundation pit support structure will deform or even become unstable under the action of self-weight, external loads, rainfall, etc. In order to be able to timely discover the safety hazards of slope projects, monitoring the displacement of the deep foundation pit support structure is a more effective method. When the deep foundation pit support structure is seriously deformed, corresponding emergency treatment and reinforcement measures can be taken. How to monitor the deformation of the deep foundation pit support structure is an important issue in the deep foundation pit support structure project.

[0003] Construction, drainage and load factors in building construction will cause horizontal and vertical displacement of deep foundation pit support structures. If the displacement is serious, the deep foundation pit support structure will cause landslides, rockfalls and other threats to the project and casualties. Therefore, it is necessary to monitor the displacement of deep foundation pit support structures. Traditional methods include GPS monitoring, cable monitoring and radar remote sensing monitoring, but these measurements are labor-intensive and require professional technicians to operate. They also consume a lot of manpower and material resources and are costly. Summary of the invention

[0004] The present invention aims to solve the above-mentioned technical problems, thereby providing a convenient, fast and low-cost method for monitoring the settlement and deviation of a foundation pit support structure.

[0005] The present invention solves the technical problem and adopts the following technical solution: A method for monitoring the settlement and deflection of a deep foundation pit support structure comprises the following steps: S1. Make the base bracket The base bracket includes a base and a support rod vertically arranged on the base, and the support rod is a hollow structure; S2. Make a scale vertical rod The shaft of the graduated vertical rod is provided with graduations and the top end is provided with a compass; S3. Scale instruments are installed on the four sides of the upper part of the scale vertical rod, and the scale instrument includes a dial and a pointer. The scale of the dial is semicircular, and the pointer points to the zero position of the dial in a vertical state; S4. Install the base bracket on the supporting structure; S5. The scale vertical rod is installed in the support rod of the base bracket, and the scale vertical rod is adjusted to be in a vertical state; S6. When the foundation pit support structure is offset, the index of the pointer on the scale instrument is the offset of the deep foundation pit support structure.

[0006] Compared with the prior art, the present invention using the above technical solution has the following beneficial effects: 1. Realize deep foundation pit monitoring more efficiently and quickly, which is convenient, fast, cost-saving and accelerates construction progress; 2) The monitoring device is equipped with scales, which makes the operation very intuitive and clear; 3) The monitoring device is light and compact, can be recycled many times, occupies little space, is easy to transport, and can fully achieve the purpose of multiple uses.

[0007] Further, the optimization scheme of the present invention is: The base support is in a cross shape, and the support rod is located at the center of the top surface of the base support.

[0008] The support rod is a square tube.

[0009] A scale vertical rod base for supporting the scale vertical rod is arranged inside the support rod.

[0010] A leveling nut is arranged at the upper end of the support rod.

[0011] The cross section of the scale vertical rod is square. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an axonometric diagram of a monitoring device according to an embodiment of the present invention; Figure 2 is a schematic diagram of a base bracket according to an embodiment of the present invention; Figure 3 A schematic diagram of a scale vertical rod according to an embodiment of the present invention; Figure 4 A schematic diagram of a graduated instrument according to an embodiment of the present invention; In the figure: base bracket 1; base 101; support rod 102; leveling nut 2; scale vertical rod base 3; scale vertical rod 4; scale instrument 5; dial 501; pointer 502; compass 6. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0014] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] See also Figure 1-Figure 4 This embodiment provides a method for monitoring the settlement and displacement of a deep foundation pit support structure, which is performed in the following steps: S1. Make the base bracket The base bracket 1 is mainly composed of a base 101 and a support rod 102. The base 101 is cross-shaped. The cross-shaped base 101 increases the stability of the monitoring device installation. The base bracket 1 adopts a steel pipe welding structure. The support rod 102 is a hollow structure, which adopts a square tube. The support rod 102 is vertically welded on the base 101, and the support rod 102 is perpendicular to the base 101. Four leveling nuts 2 are symmetrically installed on the upper end of the support rod 102, and a scale vertical rod base 3 is welded on the upper part of the through hole of the support rod 102. The scale vertical rod base 3 is a square ring structure.

[0016] S2. Make a scale vertical rod The cross section of the scale vertical rod 4 is square, and scales are respectively arranged on the four sides of the rod body, and the scales are accurate to millimeters.

[0017] S3, the four sides of the upper part of the scale vertical rod 4 are respectively installed with scale instruments 5, which are composed of a dial 501 and a pointer 502. The scale of the dial 501 is semicircular, and the zero position is located in the middle of the scale. The pointer 502 points to the zero position of the dial 501 in a vertical state. When the supporting structure deviates, the degree of deflection of the top of the deep foundation pit supporting structure can be recorded by the pointer 502 index of the scale instrument 5. A compass 6 is provided at the top of the scale vertical rod 4, and the compass 6 is used to identify the direction.

[0018] S4. Install the base bracket 1 on the supporting structure. The base bracket 1 is located at the top of the supporting structure and can be installed on the concrete crown beam, purlin, steel support or the slope top of the foundation pit. When installed on the concrete crown beam, it is poured at the same time as the concrete crown beam. Adjust the base support 1 to a horizontal position.

[0019] S5. Insert the scale vertical rod 4 into the support rod 102 of the base bracket 1. The scale vertical rod base 3 supports and limits the support rod 102 to prevent the scale vertical rod 4 from falling to the bottom of the support rod 102. Adjust the leveling nut 2 to make the scale vertical rod 4 vertical. At this time, the pointers of the four scale instruments 5 all point to zero under the action of gravity. The scale vertical rod 4 is marked with scales. At this time, the scale value of the device at the same elevation can be recorded by a level. After a period of time, the settlement of the device during this period can be measured by the level.

[0020] S6, base bracket 1, leveling nut 2, scale vertical rod base 3, scale vertical rod 4, scale meter 5 and compass 6 constitute a monitoring device. When the foundation pit support structure deviates, the base bracket 1 and scale vertical rod 4 will also tilt and deviate. The index of the pointer 502 on the scale meter 5 is the deflection of the deep foundation pit support structure. The monitoring device should be installed in the same direction as the deep foundation pit support. The compass 6 can accurately describe the deflection direction and angle of the support structure.

[0021] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for monitoring the settlement and deflection of a deep foundation pit support structure, comprising the following steps: S1. Make the base bracket The base bracket includes a base and a support rod vertically arranged on the base, and the support rod is a hollow structure; S2. Make a scale vertical rod The shaft of the graduated vertical rod is provided with graduations and the top end is provided with a compass; S3. Scale instruments are installed on the four sides of the upper part of the scale vertical rod, and the scale instrument includes a dial and a pointer. The scale of the dial is semicircular, and the pointer points to the zero position of the dial in a vertical state; S4. Install the base bracket on the supporting structure; S5. The scale vertical rod is installed in the support rod of the base bracket, and the scale vertical rod is adjusted to be in a vertical state; S6. When the foundation pit support structure is offset, the index of the pointer on the scale instrument is the offset of the deep foundation pit support structure.

2. The method for monitoring the settlement and deflection of a deep foundation pit support structure according to claim 1, characterized in that: The base support is in a cross shape, and the support rod is located at the center of the top surface of the base support.

3. The method for monitoring settlement and deflection of a deep foundation pit support structure according to claim 1, characterized in that: The support rod is a square tube.

4. The method for monitoring settlement and deflection of a deep foundation pit support structure according to claim 1, characterized in that: A scale vertical rod base for supporting the scale vertical rod is arranged inside the support rod.

5. The method for monitoring settlement and deflection of a deep foundation pit support structure according to claim 1, characterized in that: A leveling nut is arranged at the upper end of the support rod.

6. The method for monitoring settlement and deflection of a deep foundation pit support structure according to claim 1, characterized in that: The cross section of the scale vertical rod is square.

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