Bridge floor elevation measuring tool in bridge pushing process

Abstract

The utility model relates to a bridge floor elevation measuring tool in a bridge pushing process, which comprises a magnetic attraction base, a reflector plate unit and a lifting rod unit, the reflector plate unit is fixed at the top end of the lifting rod unit, and the bottom end of the lifting rod unit is fixed on the upper end face of the magnetic attraction base. The lower end face of the magnetic attraction base is attracted and fixed to the bridge surface of the steel bridge through magnetic attraction force, and the center of the reflector plate unit, the center of the lifting rod unit and the center of the magnetic attraction base are all located on the same straight line. According to the utility model, the bridge floor elevation measuring tool can be directly adsorbed on the bridge floor of a steel bridge through the magnetic base, and the bridge floor linear elevation can be accurately measured in the pushing process through the arrangement of the lifting rod unit and the reflector plate unit; the construction method has the advantages of simplicity and convenience in operation, material and labor saving, reusability, high construction efficiency and excellent safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge deck elevation measuring tools, in particular to a bridge deck elevation measuring tool during the bridge jacking process. Background Art

[0002] Construction monitoring is extremely important for steel structure bridges constructed by the top-pushing method. This is because the structure is in dynamic change during the top-pushing construction process. There are many factors that affect the smooth implementation of its construction control. As the construction progresses, there are many parameters in the construction control simulation calculation, such as cross-sectional characteristics, construction loads, and the structural model itself, which may have errors with the actual situation. Therefore, the bridge structure must be monitored during the top-pushing construction to obtain data and technical information reflecting the actual construction situation, so as to continuously revise the ideal state of each construction stage originally determined according to the actual situation and keep the construction state under control. However, during the top-pushing process, construction workers cannot go up the bridge, so the measurement method is generally to weld the steel bar head on the steel structure bridge, and then paste the reflector on the steel bar head for measurement and control. This wastes both material costs and labor, and the safety is not good during the welding of the steel bar head, and it will reduce the construction efficiency of the top-pushing process of the steel structure bridge. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a bridge deck elevation measuring tool during the bridge jacking process, which can save materials and labor and improve construction efficiency and safety.

[0004] The purpose of the utility model is achieved through the following technical scheme. The bridge deck elevation measuring tool during the bridge pushing process includes a magnetic base, a reflective sheet unit and a lifting rod unit. The reflective sheet unit is fixed on the top of the lifting rod unit, and the bottom end of the lifting rod unit is fixed on the upper end surface of the magnetic base. The lower end surface of the magnetic base is fixed on the bridge deck of the steel bridge by magnetic adsorption force, and the center of the reflective sheet unit, the center of the lifting rod unit and the center of the magnetic base are all on the same straight line.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, the bridge deck elevation measuring tool can be directly adsorbed on the steel bridge deck through the magnetic base, and by setting the lifting rod unit and the reflector unit, the bridge deck linear elevation can be accurately measured during the jacking process. It has the advantages of simple operation, saving materials and labor, and can be reused, with high construction efficiency and good safety.

[0006] Preferably, the lifting rod unit includes an inner rod and an outer rod, the outer rod is fixed on the upper end surface of the magnetic base, the inner rod is sleeved and movable inside the outer rod, and a clamping assembly is provided between the inner rod and the outer rod so that the inner rod can move axially along the outer rod and be limited and clamped; through the arrangement of the above structure, not only is the structure simple, but also the lifting rod unit is more convenient during the lifting process.

[0007] Preferably, the clamping assembly includes a clamping pin, a first clamping hole arranged on the side wall of the outer rod, and a second clamping hole arranged on the side wall of the inner rod. The second clamping holes are provided in plurality and are arranged along the axial direction of the inner rod. When the second clamping hole is aligned with the first clamping hole, the clamping pin is plugged into the first clamping hole and the second clamping hole to achieve plug-in fixation. Through the arrangement of the above structure, the product is simple to manufacture, low in cost, and very convenient to operate.

[0008] Preferably, the second clamping holes are arranged in a straight line in sequence along the axial direction of the inner rod, and the spacing between adjacent second clamping holes is 2 cm; the first clamping hole is located above the side wall of the outer rod; through the arrangement of the above structure, the second clamping holes arranged in a straight line and the first clamping holes are arranged at the top of the outer rod, the lifting distance is controllable and the range is also expanded.

[0009] Preferably, the inner rod and the outer rod are both sleeves, both ends of the outer rod are through-holes, one end of the inner rod is closed, and the other end is open; the above-mentioned structure is arranged to facilitate the assembly between the inner and outer rods. At the same time, one end of the inner and outer rods is open, so that if the bayonet falls into the inner rod due to improper insertion, it is easy to take out.

[0010] Preferably, the reflector unit comprises a bracket and a reflector, wherein the bracket is fixed on the closed end face of the inner rod, and the reflector is provided with two pieces and respectively adhered on the front and back faces of the bracket; this facilitates the replacement of the reflector and both sides of the entire device can be used.

[0011] Preferably, the magnetic base is a truncated cone structure; this makes the adsorption area of ​​the magnetic base on the steel bridge deck larger and the structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a three-dimensional structural schematic diagram of a bridge deck elevation measuring tool during the bridge jacking process.

[0013] Figure 2 The utility model is a schematic diagram of the main cross-sectional structure of a bridge deck elevation measuring tool during the bridge jacking process.

[0014] The numbers in the accompanying drawings are: 1, magnetic base; 2, reflector unit; 3, lifting rod unit; 4, clamping assembly; 21, bracket; 22, reflector; 31, inner rod; 32, outer rod; 41, bayonet pin; 42, first clamping hole; 43, second clamping hole. DETAILED DESCRIPTION

[0015] The following is a detailed introduction to the utility model in conjunction with the accompanying drawings: Figure 1 , 2 As shown, the utility model includes a magnetic base 1, a reflective sheet unit 2 and a lifting rod unit 3, the reflective sheet unit 2 is fixed on the top of the lifting rod unit 3, the bottom end of the lifting rod unit 3 is fixed on the upper end surface of the magnetic base 1 by welding, the lower end surface of the magnetic base 1 is fixed on the bridge deck of the steel bridge by magnetic adsorption force, and the center of the reflective sheet unit 2, the center of the lifting rod unit 3 and the center of the magnetic base 1 are all on the same straight line.

[0016] The lifting rod unit 3 includes an inner rod 31 and an outer rod 32. The outer rod 32 is fixed on the upper end surface of the magnetic base 1. The inner rod 31 is sleeved and movable in the outer rod 32. A clamping assembly 4 is provided between the inner rod 31 and the outer rod 32 so that the inner rod 31 can move axially along the outer rod 32 and be clamped in a limited position.

[0017] The clamping assembly 4 includes a clamping pin 41, a first clamping hole 42 arranged on the side wall of the outer rod 32, and a second clamping hole 43 arranged on the side wall of the inner rod 31. There are a plurality of second clamping holes 43, which are arranged along the axial direction of the inner rod 31. When the second clamping hole 43 is aligned with the first clamping hole 42, the clamping pin 41 is inserted into the first clamping hole 42 and the second clamping hole 43 to achieve plug-in fixation.

[0018] The second clamping holes 43 are arranged in a straight line in sequence along the axial direction of the inner rod 31 , and the spacing between adjacent second clamping holes 43 is 2 cm; the first clamping holes 42 are located above the side wall of the outer rod 32 .

[0019] The inner rod 31 and the outer rod 32 are both sleeves, both ends of the outer rod 32 are through, one end of the inner rod 31 is closed, and the other end is open.

[0020] The reflector unit 2 includes a bracket 21 and a reflector 22 . The bracket 21 is fixed to the closed end surface of the inner rod 31 by welding. The reflector 22 has two pieces and is respectively pasted on the front and back surfaces of the bracket 21 .

[0021] The magnetic base 1 is a truncated cone structure, and the magnetic base 1 is a magnet base with high-strength suction.

[0022] The working principle of the utility model is as follows: the bridge deck elevation measuring tool is adsorbed on the steel bridge deck through the magnetic base 1, and then the required height is measured during the actual jacking process and achieved by adjusting the height of the lifting rod unit 3.

[0023] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A bridge deck elevation measurement tool during bridge jacking process, comprising a magnetic base (1), a reflector unit (2) and a lifting rod unit (3), characterized in that: The reflective sheet unit (2) is fixed on the top end of the lifting rod unit (3), the bottom end of the lifting rod unit (3) is fixed on the upper end surface of the magnetic base (1), the lower end surface of the magnetic base (1) is fixed on the bridge deck of the steel bridge by magnetic adsorption force, and the center of the reflective sheet unit (2), the center of the lifting rod unit (3) and the center of the magnetic base (1) are all on the same straight line.

2. The bridge deck elevation measurement tool during bridge pushing process according to claim 1 is characterized by: The lifting rod unit (3) comprises an inner rod (31) and an outer rod (32); the outer rod (32) is fixed on the upper end surface of the magnetic base (1); the inner rod (31) is sleeved and movable inside the outer rod (32); and a clamping assembly (4) is provided between the inner rod (31) and the outer rod (32) so that the inner rod (31) can move axially along the outer rod (32) and be clamped in a limited position.

3. The bridge deck elevation measurement tool during bridge pushing process according to claim 2 is characterized by: The clamping assembly (4) comprises a clamping pin (41), a first clamping hole (42) arranged on the side wall of the outer rod (32), and a second clamping hole (43) arranged on the side wall of the inner rod (31). A plurality of second clamping holes (43) are provided and arranged along the axial direction of the inner rod (31). When the second clamping hole (43) is aligned with the first clamping hole (42), the clamping pin (41) is plugged into the first clamping hole (42) and the second clamping hole (43) to achieve plug-in fixation.

4. The bridge deck elevation measurement tool during bridge pushing process according to claim 3 is characterized by: The second clamping holes (43) are arranged in sequence in a straight line along the axial direction of the inner rod (31), and the spacing between adjacent second clamping holes (43) is 2 cm; the first clamping hole (42) is located above the side wall of the outer rod (32).

5. The bridge deck elevation measurement tool during bridge jacking process according to claim 2 is characterized by: The inner rod (31) and the outer rod (32) are both sleeves, both ends of the outer rod (32) are through-holes, one end of the inner rod (31) is closed, and the other end is open.

6. The bridge deck elevation measurement tool during bridge pushing process according to claim 5 is characterized by: The reflective sheet unit (2) comprises a bracket (21) and a reflective sheet (22); the bracket (21) is fixed on the closed end surface of the inner rod (31); the reflective sheet (22) is provided with two sheets and is respectively adhered to the front and back surfaces of the bracket (21).

7. The bridge deck elevation measurement tool during bridge jacking process according to claim 1 is characterized by: The magnetic base (1) is a truncated cone structure.

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