An assembled steel support axial force monitoring assembly

Abstract

The application discloses an assembled steel support axial force monitoring assembly, which comprises a fixed part, a monitoring element and a movable part. The fixed part is arranged at the end of the steel support and is provided with a center sleeve extending outward along the axial direction of the steel support. The monitoring element is arranged in the center sleeve. The movable part is provided with a jacking pipe with a sealed end matched with the inside of the center sleeve, and the jacking pipe is inserted into the center sleeve. The monitoring element is arranged in the center sleeve of the fixed part, and the jacking pipe of the movable part is inserted into the center sleeve. The fixed part is pressed against the movable part under the action of the axial force of the steel support, and the jacking pipe is pressed against the monitoring element under the action of the reaction force, so that the axial force of the steel support is monitored in real time. The monitoring element is arranged inside and is stable in installation and is not affected by the external environment, and the monitoring data is accurate. The overall structure is convenient to disassemble and install and can be reused. The steel support and the steel enclosing purlin are in contact through the cooperation of the center sleeve and the jacking pipe, and the steel support is not easy to fall off.

Description

Technical Field

[0001] This invention relates to the field of steel support monitoring, and specifically to a prefabricated steel support axial force monitoring component. Background Technology

[0002] With the rapid development of cities, underground space development and urban rail transit are showing a rapid growth trend. Due to the limitations of the surrounding environment during the construction of deep foundation pits in cities, the support method of retaining piles / walls with internal steel bracing is widely used.

[0003] Currently, during the on-site construction of steel support systems, there are common problems such as the lack of detailed construction methods in the design drawings and non-standard installation. Therefore, real-time monitoring of the axial force of the steel supports often becomes a controlling factor for the safe construction of foundation pits.

[0004] For axial force monitoring of steel supports, the common practice in current engineering is to directly place the pressure box between the steel support and the steel waler and tighten it. However, after years of engineering practice, the following problems have been found with this approach:

[0005] 1. The pressure box is not installed correctly, resulting in inaccurate axial force monitoring data;

[0006] 2. The steel support and the steel waler are only in contact through a pressure box, which can easily lead to the steel support falling off.

[0007] 3. The entire foundation pit excavation and backfilling process took a long time and involved many influencing factors, resulting in damage to the pressure box.

[0008] Therefore, it is essential to develop a novel method for monitoring the axial force of steel supports. Summary of the Invention

[0009] The purpose of this invention is to provide an assembled steel support axial force monitoring component to solve the above-mentioned problems existing in the prior art.

[0010] To achieve the above objectives, the technical solution of the present invention is as follows:

[0011] A prefabricated steel support axial force monitoring assembly includes:

[0012] A fixing part is fixed to the end of the steel support, and the fixing part is provided with a central sleeve extending outward along the axial direction of the steel support;

[0013] A monitoring element is placed inside the central sleeve;

[0014] A movable part is provided with an end-sealed jacking tube that matches the central sleeve, and the jacking tube is inserted into the central sleeve;

[0015] The fixed part presses the movable part against the steel waler under the action of the axial force of the steel support, the jacking pipe presses against the monitoring element, the monitoring element is used to record the pressure in real time, and the central sleeve has a first wire hole for the signal line of the monitoring element to pass through.

[0016] By adopting the above scheme, axial force monitoring is performed using a combination of fixed and movable parts. The fixed part is fixed to the end of the steel support, and the monitoring element is set inside the central sleeve of the fixed part. The jacking tube of the movable part is inserted into the central sleeve. Under the action of the axial force of the steel support, the fixed part presses the movable part tightly, while the jacking tube presses the monitoring element tightly under the action of the reaction force, realizing real-time monitoring of the axial force of the steel support. The monitoring element is installed internally and is stable, unaffected by the external environment, and the monitoring data is accurate. The overall structure is easy to disassemble and install, and can be reused. The steel support and the steel waler are in contact through the cooperation of the central sleeve and the jacking tube, making it difficult for the steel support to fall off.

[0017] Based on the above technical solution, the present invention can be further improved as follows:

[0018] Furthermore, the fixing part includes a flange, which is fixed to the end of the steel support through a ring of screw holes on the outer surface, and the central sleeve is fixed at the center position of the side of the flange away from the steel support.

[0019] Furthermore, the movable part includes a support plate, and the jacking tube is installed at the center of the support plate on one side facing the fixed part.

[0020] Furthermore, the flange is provided with an outer sleeve on the side away from the steel support. The outer sleeve is fitted over the central sleeve and is concentric with the central sleeve. The length of the outer sleeve is the same as that of the central sleeve, and a second wire hole is provided on the outer sleeve for the signal line of the monitoring element to pass through.

[0021] By adopting the above solution, an outer sleeve is set to further limit the maximum displacement of the movable part, so as to avoid excessive impact force from the support plate and the jacking pipe that could damage the equipment.

[0022] Furthermore, a number of reinforcing ribs are evenly spaced between the outer sleeve and the central sleeve.

[0023] By adopting the above-mentioned scheme, the structural strength is enhanced.

[0024] Furthermore, several reinforcing ribs divide the gap between the outer sleeve and the central sleeve into multiple hollow regions. The support plate has multiple inserts on one side facing the fixing part, which correspond one-to-one with the multiple hollow regions. The inserts are matched in size to the hollow regions and are inserted into the hollow regions to limit the jacking tube.

[0025] By adopting the above scheme, when the jacking pipe is inserted into the central sleeve, the insert is inserted into the hollow area. The insert, together with the inner wall of the outer sleeve, the outer wall of the central sleeve, and the side wall of the reinforcing rib, limits the movement direction of the jacking pipe, thereby ensuring the accuracy of monitoring.

[0026] Furthermore, the insert is a hollow fan-shaped structure composed of an outer arc-shaped plate, an inner arc-shaped plate, and side plates on both sides. The outer arc-shaped plate matches the inner ring surface of the outer sleeve, the inner arc-shaped plate matches the outer ring surface of the central sleeve, and the side plates match the side surface of the reinforcing rib.

[0027] Furthermore, the monitoring element is a pressure cell.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention uses a combination of a fixed part and a movable part for axial force monitoring. The fixed part is fixed to the end of the steel support, and the monitoring element is set in the central sleeve of the fixed part. The jacking tube of the movable part is inserted into the central sleeve. The fixed part presses the movable part under the action of the axial force of the steel support, and at the same time, the jacking tube presses the monitoring element under the action of the reaction force, so as to realize real-time monitoring of the axial force of the steel support. The monitoring element is set inside and installed firmly, and is not affected by the external environment, so the monitoring data is accurate.

[0030] 2. The present invention uses a combination of fixed and movable parts for axial force monitoring. The fixed part is fixed to the end of the steel support, and the movable part is pressed against the steel waler by the fixed part to realize axial force monitoring. The overall structure is easy to disassemble and install, and can be reused.

[0031] 3. In this invention, the steel support and the steel waler are in contact through a matching central sleeve and jacking pipe, as well as a matching insert and hollow area. Due to this sleeve-type limiting structure, the steel support is not easy to fall off.

[0032] 4. The flange surface of the fixed part of the present invention forms multiple hollow areas through the cooperation of the outer sleeve, the central sleeve and the reinforcing rib. The support plate surface of the movable part is provided with an insert that matches the hollow area. The insert and the hollow area cooperate to limit the movement direction of the jacking pipe, effectively ensuring the monitoring accuracy. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0034] Figure 1This is a structural schematic diagram of an embodiment of the present invention.

[0035] Figure 2 This is a cross-sectional structural schematic diagram of the fixing part according to an embodiment of the present invention.

[0036] Figure 3 This is a cross-sectional structural diagram of the active part according to an embodiment of the present invention.

[0037] As shown in the figure:

[0038] 1. Center sleeve; 101. First threading hole;

[0039] 2. Jacking pipe;

[0040] 3. Steel supports;

[0041] 4. Steel walers;

[0042] 5. Flange; 501. Screw hole;

[0043] 6. Support plate;

[0044] 7. Outer tube; 701. Second threading hole;

[0045] 8. Reinforcing ribs;

[0046] 9. Insert; 901. Outer arc plate; 902. Inner arc plate; 903. Side plate;

[0047] 10. Hollow area;

[0048] 11. Pressure box. Detailed Implementation

[0049] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0050] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0051] like Figure 1-3 As shown in the figure, this embodiment provides an assembled steel support axial force monitoring assembly, which includes a fixed part, a monitoring element, and a movable part.

[0052] The fixing part includes a flange 5, which is 25mm thick and has 20 bolt holes 501 with a diameter of 26mm around its outer ring. The flange 5 is fixed to the end of the steel support 3 through the bolt holes 501.

[0053] A central sleeve 1 is provided on the side of the flange 5 away from the steel support 3, and the central sleeve 1 extends outward along the axial direction of the steel support 3. The monitoring element is a pressure box 11, which is located inside the central sleeve 1.

[0054] Specifically, the central sleeve 1 has a length of 475mm, a wall thickness of 16mm, and an inner diameter of the pressure box 11 plus 20mm. The central sleeve 1 has a first wire hole 101 of size 20X10mm for the signal wire of the pressure box 11 to pass through.

[0055] The movable part includes a support plate 6, and a jacking tube 2 matching the central sleeve 1 is provided at the center position of the side of the support plate 6 facing the fixed part. The jacking tube 2 is 455mm long, and its outer diameter is the same as that of the pressure box 11. Its end is sealed and inserted into the central sleeve 1.

[0056] The fixed part presses the movable part onto the steel waler 4 under the axial force of the steel support 3, and the jacking pipe 2 presses the monitoring element. The monitoring element is used to record the pressure in real time. The central sleeve 1 has a first wire hole 101 for the signal line of the monitoring element to pass through.

[0057] Specifically, in this embodiment, the flange 5 is provided with an outer sleeve 7 on the side away from the steel support 3. The outer sleeve 7 is sleeved outside the central sleeve 1 and is concentric with the central sleeve 1. The length of the outer sleeve 7 is the same as that of the central sleeve 1, and a second wire hole 701 of 20X10mm is opened on the outer sleeve 7 for the signal line of the pressure box 11 to pass through.

[0058] The outer sleeve 7 is set to further limit the maximum displacement of the moving part and avoid excessive impact force from the support plate 6 and the jacking tube 2, which could damage the equipment.

[0059] Four reinforcing ribs 8 are evenly spaced between the outer sleeve 7 and the central sleeve 1 to enhance structural strength. The thickness of the reinforcing ribs 8 is 16mm.

[0060] Four reinforcing ribs 8 divide the gap between the outer sleeve 7 and the central sleeve 1 into four hollow areas 10. The support plate 6 has four inserts 9 on one side facing the fixing part, which correspond to the four hollow areas 10. The inserts 9 are matched in size with the hollow areas 10, and the inserts 9 are inserted into the hollow areas 10 to limit the push-in tube 2.

[0061] When the jacking tube 2 is inserted into the central sleeve 1, the insert 9 is inserted into the hollow region 10. The insert 9 cooperates with the inner wall of the outer sleeve 7, the outer wall of the central sleeve 1, and the side wall of the reinforcing rib 8 to limit the movement direction of the jacking tube 2, thereby ensuring the accuracy of monitoring.

[0062] Specifically, the insert 9 is a hollow fan-shaped structure composed of an outer arc plate 901, an inner arc plate 902, and side plates 903 on both sides. The outer arc plate 901 matches the inner ring surface of the outer sleeve 7, the inner arc plate 902 matches the outer ring surface of the central sleeve 1, and the side plates 903 match the side surface of the reinforcing rib 8.

[0063] This embodiment uses a combination of a fixed part and a movable part for axial force monitoring. The fixed part is fixed to the end of the steel support 3, and the monitoring element is set in the central sleeve 1 of the fixed part. The jacking tube 2 of the movable part is inserted into the central sleeve 1. Under the action of the axial force of the steel support 3, the fixed part presses the movable part, and at the same time, under the action of the reaction force, the jacking tube 2 presses the monitoring element, so as to realize the real-time monitoring of the axial force of the steel support 3. The monitoring element is set inside and installed firmly, and is not affected by the external environment, so the monitoring data is accurate.

[0064] This embodiment uses a combination of fixed and movable parts for axial force monitoring. The fixed part is fixed to the end of the steel support 3, and the movable part is pressed against the steel waler 4 by the fixed part to achieve axial force monitoring. The overall structure is easy to disassemble and install, and can be reused.

[0065] In this embodiment, the steel support 3 and the steel waler 4 are in contact through a matching central sleeve 1 and jacking pipe 2, as well as a matching insert 9 and hollow area 10. Due to this sleeve-type limiting structure, the steel support 3 is not easy to fall off.

[0066] In this embodiment, the flange 5 of the fixed part forms multiple hollow areas 10 through the cooperation of the outer sleeve 7, the central sleeve and the reinforcing rib 8. The support plate 6 of the movable part is provided with an insert 9 that matches the hollow area 10. The insert 9 and the hollow area 10 cooperate to limit the movement direction of the jacking pipe 2, effectively ensuring the monitoring accuracy.

[0067] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A prefabricated steel support axial force monitoring component, characterized in that, include: A fixing part is fixed to the end of a steel support. The fixing part is provided with a central sleeve extending outward along the axial direction of the steel support. The fixing part includes a flange, which is fixed to the end of the steel support through a ring of screw holes on its outer surface. The central sleeve is fixed at the center position of the side of the flange away from the steel support. The side of the flange away from the steel support is also provided with an outer sleeve, which is sleeved outside the central sleeve and is concentric with the central sleeve. The length of the outer sleeve is the same as that of the central sleeve. A monitoring element is placed inside the central sleeve; A movable part is provided with an end-sealed jacking tube that matches the interior of the central sleeve, and the jacking tube is inserted into the central sleeve; the movable part includes a support plate, and the jacking tube is installed at the center position of one side of the support plate facing the fixed part; The central sleeve has a first wire hole for the signal line of the monitoring element to pass through, and the outer sleeve has a second wire hole for the signal line of the monitoring element to pass through. The fixed part presses the movable part against the steel waler under the action of the axial force of the steel support, while the jacking pipe presses against the monitoring element under the action of the reaction force. The monitoring element is used to record the pressure in real time. A number of reinforcing ribs are evenly spaced between the outer sleeve and the central sleeve. The reinforcing ribs divide the gap between the outer sleeve and the central sleeve into multiple hollow regions. The support plate has multiple inserts on one side facing the fixing part, which correspond one-to-one with the multiple hollow regions. The inserts are matched to the size of the hollow regions and are inserted into the hollow regions to limit the jacking tube.

2. The prefabricated steel support axial force monitoring assembly according to claim 1, characterized in that, The insert is a hollow fan-shaped structure composed of an outer arc-shaped plate, an inner arc-shaped plate, and side plates on both sides. The outer arc-shaped plate matches the inner ring surface of the outer sleeve, the inner arc-shaped plate matches the outer ring surface of the central sleeve, and the side plates match the side surface of the reinforcing rib.

3. The prefabricated steel support axial force monitoring assembly according to claim 1 or 2, characterized in that, The monitoring element is a pressure cell.

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