Reinforced concrete supporting axial force measuring device and construction equipment

Abstract

The utility model discloses a reinforced concrete supporting axial force measuring device and construction equipment. The reinforced concrete supporting axial force measuring device comprises a first embedded plate; the second pre-buried plate and the first pre-buried plate are arranged at an interval; the tension connecting part is arranged between the first pre-buried plate and the second pre-buried plate, and the two ends of the tension connecting part are detachably installed on the first pre-buried plate and the second pre-buried plate; the vibrating wire type counter-force meter is arranged between the first pre-embedded plate and the second pre-embedded plate, and the two ends of the vibrating wire type counter-force meter abut against the first pre-embedded plate and the second pre-embedded plate. The first pre-embedded plate, the second pre-embedded plate and the tension connecting part are combined to form a connecting structure, the connecting structure has the advantages of being capable of being repeatedly used and temporarily replaced, tension is borne by the tension connecting part, pressure is borne by the vibrating wire type counter-force meter, on one hand, false alarm is avoided, on the other hand, the vibrating wire type counter-force meter is high in precision and small in influence of external factors, and the reliability is high. Therefore, the precision of reinforced concrete support axial force measurement can be improved.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit construction, and particularly relates to a device for measuring the axial force of a reinforced concrete support and construction equipment. Background Art

[0002] Currently, the measurement of the axial force of a reinforced concrete support beam is mainly carried out by welding reinforcing bar stress gauges on the stressed reinforcing bars at the four corners of the cross-section of the reinforced concrete support beam. However, the measurement of the reinforcing bar stress gauge is greatly affected by external factors, and the error often reaches up to 2 times, often giving false alarms, making the test data of the reinforcing bar stress gauge completely lose its reference value. Second, the reinforcing bar stress gauge is often damaged during installation and construction, resulting in abnormal readings or even no readings. Summary of the Invention

[0003] An object of this application is to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a device for measuring the axial force of a reinforced concrete support, which can improve the measurement accuracy of the axial force of the reinforced concrete support and has the characteristics of being reusable and replaceable.

[0004] This application also provides a construction equipment including the above-mentioned device for measuring the axial force of a reinforced concrete support.

[0005] The device for measuring the axial force of a reinforced concrete support according to the first aspect embodiment of this application includes:

[0006] A first embedded plate;

[0007] A second embedded plate, arranged at an interval from the first embedded plate;

[0008] A tension connection component, arranged between the first embedded plate and the second embedded plate in a tensioned state. One end of the tension connection component is detachably installed on the first embedded plate, and the other end of the tension connection component is detachably installed on the second embedded plate;

[0009] A vibrating wire load cell, arranged between the first embedded plate and the second embedded plate in a compressed state. One end of the vibrating wire load cell abuts against the first embedded plate, and the other end of the vibrating wire load cell abuts against the second embedded plate.

[0010] The device for measuring the axial force of a reinforced concrete support according to the first aspect embodiment of this application has at least the following beneficial effects: By combining the first embedded plate, the second embedded plate and the tension connection component into a connection structure, it has the characteristics of being reusable and temporarily replaceable. Among them, the tension is borne by the tension connection component, and the pressure is borne by the vibrating wire load cell. On the one hand, false alarms are avoided, and on the other hand, the high accuracy and small influence of external factors of the vibrating wire load cell are utilized, so as to improve the measurement accuracy of the axial force of the reinforced concrete support.

[0011] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, the tensile connection member includes a connection screw, a first connection nut, and a second connection nut. Both ends of the connection screw are provided with left - hand and right - hand threads. One end of the connection screw passes through the first embedded plate and is threadedly connected to the first connection nut, and the other end of the connection screw passes through the second embedded plate and is threadedly connected to the second connection nut.

[0012] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, the tensile connection member includes a first sleeve and a second sleeve. The first sleeve is sleeved outside the first connection nut, and the second sleeve is sleeved outside the second connection nut.

[0013] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, a first limiting groove is provided in the first sleeve, and the first connection nut is located in the first limiting groove so that the first limiting groove can limit the circumferential rotation of the first connection nut;

[0014] A second limiting groove is provided in the second sleeve, and the second connection nut is located in the second limiting groove so that the second limiting groove can limit the circumferential rotation of the second connection nut.

[0015] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, the first connection nut is slidably arranged along the axial direction of the first sleeve in the first limiting groove;

[0016] The second connection nut is slidably arranged along the axial direction of the second sleeve in the second limiting groove.

[0017] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, the first connection nut and the second connection nut are set as hexagonal nuts, and the cross - sectional shapes of the first limiting groove and the second limiting groove are also hexagonal.

[0018] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, the reinforced concrete support axial force measuring device further includes a reaction force mounting frame. One end of the reaction force mounting frame abuts against the first embedded plate, one end of the vibrating wire type reaction force gauge is arranged at the other end of the reaction force mounting frame, and the other end of the vibrating wire type reaction force gauge abuts against the second embedded plate.

[0019] According to the reinforced concrete support axial force measuring device described in the embodiments of the first aspect of the present application, a first cushion plate is provided between one end of the reaction force mounting frame and the first embedded plate, and a second cushion plate is provided between the other end of the vibrating wire type reaction force gauge and the second embedded plate.

[0020] According to the reinforced concrete support axial force measuring device described in the embodiment of the first aspect of the present application, embedded steel bars are provided on the first embedded plate and the second embedded plate, and each of the embedded steel bars is provided with a concrete structure.

[0021] The construction equipment according to the embodiment of the second aspect of the present application includes: the reinforced concrete support axial force measuring device described in the embodiment of the first aspect of the present application.

[0022] It is not difficult to understand that the construction equipment in the embodiment of the second aspect of the present application has the technical effects of the reinforced concrete support axial force measuring device in the embodiment of the first aspect as described above, and thus will not be elaborated herein.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application will be further described below in conjunction with the drawings and embodiments;

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the present application;

[0026] Figure 2 It is a state diagram of the first connection nut when in tension in an embodiment of the present application;

[0027] Figure 3 It is a state diagram of the first connection nut when in compression in an embodiment of the present application.

[0028] REFERENCE MARKS:

[0029] 100, the first embedded plate;

[0030] 200, the second embedded plate;

[0031] 300, the tensile connection member; 310, the connection screw; 320, the first connection nut; 330, the first sleeve; 331, the first limiting groove; 340, the second sleeve;

[0032] 400, the vibrating wire type reaction force gauge; 410, the reaction force mounting bracket; 420, the first backing plate; 430, the second backing plate;

[0033] 500, the embedded steel bar;

[0034] 600, the concrete structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0036] In the description of the present application, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0037] In the description of the present application, the meaning of "a number of" is one or more, the meaning of "a plurality of" is at least two, understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0038] In the description of the present application, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present application after combining the specific content of the technical solution.

[0039] Refer to Figures 1 to 3 , the reinforced concrete support axial force measuring device according to the first aspect embodiment of the present application is applied to deep foundation pit construction, and particularly relates to the measurement of the axial force of a reinforced concrete support beam. The reinforced concrete support axial force measuring device includes a first embedded plate 100, a second embedded plate 200, a tensile connection member 300, and a vibrating wire type reaction force meter 400.

[0040] The second embedded plate 200 is arranged at an interval from the first embedded plate 100; the tensile connection member 300 is arranged between the first embedded plate 100 and the second embedded plate 200 in a tensioned state. One end of the tensile connection member 300 is detachably installed on the first embedded plate 100, and the other end of the tensile connection member 300 is detachably installed on the second embedded plate 200; the vibrating wire type load cell 400 is arranged between the first embedded plate 100 and the second embedded plate 200 in a compressed state. One end of the vibrating wire type load cell 400 abuts against the first embedded plate 100, and the other end of the vibrating wire type load cell 400 abuts against the second embedded plate 200. It can be understood that the connection structure is formed by combining the first embedded plate 100, the second embedded plate 200 and the tensile connection member 300, which has the characteristics of being reusable and replaceable temporarily. Among them, the tensile force is borne by the tensile connection member 300, and the pressure is borne by the vibrating wire type load cell 400. On the one hand, false alarms are avoided, and on the other hand, the vibrating wire type load cell 400 has high precision and is little affected by external factors, so as to improve the measurement accuracy of the axial force of the reinforced concrete support.

[0041] In some embodiments of the present application, the tensile connection member 300 includes a connecting screw 310, a first connecting nut 320 and a second connecting nut 330. Both ends of the connecting screw 310 are set as left-hand and right-hand threads. One end of the connecting screw 310 passes through the first embedded plate 100 and is threadedly connected with the first connecting nut 320, and the other end of the connecting screw 310 passes through the second embedded plate 200 and is threadedly connected with the second connecting nut 330. It can be understood that both ends of several high-strength connecting screws 310 are left-hand and right-hand threads, ensuring that when the wrench rotates it clockwise, the nuts at the ends are all sleeved in. On the contrary, when the wrench rotates it counterclockwise, the nuts at the ends are all taken out, so that the high-strength connecting screw 310 only bears tensile force and does not bear compressive force.

[0042] In some embodiments, one end of the connecting screw 310 is a right-hand thread, and the other end of the connecting screw 310 is a left-hand thread, thus forming left-hand and right-hand threads. In some embodiments, during installation, several high-strength connecting screws 310 are first tightened to make the vibrating wire type load cell 400 in a compressed state, and a reading of about 300 - 400 KN represents reliable installation. In some embodiments, after the formwork of the reinforced concrete support is removed, the high-strength connecting screw 310 is loosened so that it just does not bear tensile force. Before the earth excavation, the readings of the vibrating wire type load cell 400 are measured no less than three times as the initial value of the axial force monitoring at this place. During the excavation of the foundation pit, it can be monitored according to the design requirements. If the support shows tensile force, it will be borne by several high-strength connecting screws 310, and the cause will be immediately found and corresponding measures will be taken to ensure the safety of the foundation pit.

[0043] In some embodiments of the present application, the tension connection member 300 includes a first sleeve 340 and a second sleeve 350. The first sleeve 340 is sleeved outside the first connection nut 320, and the second sleeve 350 is sleeved outside the second connection nut 330. It can be understood that the connection nut is installed in a sealed and hollow telescopic sleeve behind the embedded steel plate, so as to adapt to the on-site construction environment and ensure the reliable installation of the connection nut. In some embodiments, a first limiting groove 341 is provided in the first sleeve 340, and the first connection nut 320 is located in the first limiting groove 341, so that the first limiting groove 341 can limit the circumferential rotation of the first connection nut 320; a second limiting groove 351 is provided in the second sleeve 350, and the second connection nut 330 is located in the second limiting groove 351, so that the second limiting groove 351 can limit the circumferential rotation of the second connection nut 330. It can be understood that the first sleeve 340 is fixedly arranged on the first embedded plate 100. By using the first limiting groove 341, the rotation of the first connection nut 320 can be restricted to ensure the reliable connection between the nut and the screw rod. The second sleeve 350 is fixedly arranged on the second embedded plate 200. By using the second limiting groove 351, the rotation of the second connection nut 330 can be restricted to ensure the reliable connection between the nut and the screw rod.

[0044] In some embodiments, the first sleeve 340 is fixedly welded and sealed to the first embedded plate 100, and the second sleeve 350 is fixedly welded and sealed to the second embedded plate 200.

[0045] In some embodiments of the present application, the first connection nut 320 is slidably arranged along the axial direction of the first sleeve 340 in the first limiting groove 341; the second connection nut 330 is slidably arranged along the axial direction of the second sleeve 350 in the second limiting groove 351. It can be understood that after the connecting screw rod 310 is installed, it is continuously subjected to tension. Once compressed, the nut slides into the sleeve. At this time, all the pressure is borne by the vibrating wire type load cell, so as to ensure the measurement accuracy.

[0046] In some embodiments, as long as the height h from the high-strength connecting screw rod 310 to the bottom of the telescopic cylinder and the maximum compression length D of the vibrating wire type load cell 400 are satisfied, the pressure can be borne by the vibrating wire type load cell 400, and the tension can be borne by the high-strength connecting screw rod 310, improving the measurement accuracy and avoiding false alarms.

[0047] In some embodiments, the first connection nut 320 and the second connection nut 330 are set as hexagonal nuts, and the cross-sectional shapes of the first limiting groove 341 and the second limiting groove 351 are also hexagonal. Setting the first connection nut 320 and the second connection nut 330 as conventional hexagonal nuts is convenient for use and reduces costs. The first limiting groove 341 and the second limiting groove 351 are cooperatively set in corresponding shapes, so that while the rotation of the nut is restricted by the limiting groove, it does not prevent the nut from sliding due to changes in tension or pressure.

[0048] In some embodiments of the present application, the reinforced concrete support axial force measuring device further includes a reaction force mounting bracket 410. One end of the reaction force mounting bracket 410 abuts against the first embedded plate 100, one end of the vibrating wire type reaction force gauge 400 is arranged at the other end of the reaction force mounting bracket 410, and the other end of the vibrating wire type reaction force gauge 400 abuts against the second embedded plate 200. It can be understood that by setting the reaction force mounting bracket 410, the overall tight fit is ensured, the force balance is ensured, and the measurement accuracy of the vibrating wire type reaction force gauge 400 is improved.

[0049] In some embodiments of the present application, a first cushion plate 420 is provided between one end of the reaction force mounting bracket 410 and the first embedded plate 100, and a second cushion plate 430 is provided between the other end of the vibrating wire type reaction force gauge 400 and the second embedded plate 200. It can be understood that two reinforcing cushion plates are installed between the vibrating wire type reaction force gauge 400, the reaction force mounting bracket 410 and the two embedded steel plates, which can ensure the force balance.

[0050] In some embodiments of the present application, embedded steel bars 500 are provided on the first embedded plate 100 and the second embedded plate 200, and each embedded steel bar 500 is respectively provided with a concrete structure 600. It can be understood that the two embedded steel plates are connected into a stressed whole through the embedded anchor bars behind them, ensuring that the pressure received can be completely transmitted to the vibrating wire type reaction force gauge 400.

[0051] In some embodiments of the present application, the using steps are as follows:

[0052] a. First, when tying the steel bars of the reinforced concrete support beam, disconnect the steel bars at the position where the axial force monitoring point is set. Before installing the formwork, install and fix the reusable reinforced concrete support axial force gauge at the disconnected position, and pay attention to ensuring that the two embedded steel plates are perpendicular and the vibrating wire type reaction force gauge 400 is horizontal;

[0053] b. Before installing and fixing the reusable reinforced concrete support axial force gauge, tighten the high-strength connecting screw 310 so that the vibrating wire type reaction force gauge 400 is in a compressed state, and the reading is about 300 - 400 KN;

[0054] c. Pour the concrete of the reinforced concrete support beam, and do a good job in protecting the reusable reinforced concrete support axial force gauge during the pouring process;

[0055] d. After the formwork of the reinforced concrete support beam is removed, loosen the high-strength connecting screw 310 so that it just does not bear the tensile force;

[0056] e. Measure the readings of the vibrating wire type reaction force gauge 400 not less than three times before the earth excavation as the initial value of the axial force monitoring at this place; when the strength of the reinforced concrete support beam reaches the design requirements, the earth excavation can be carried out, and the axial force monitoring is carried out at the frequency required by the design during the excavation process;

[0057] f. When demolishing the reinforced concrete support beam, pay attention to protecting the reusable reinforced concrete support vibrating wire piezometer. Demolish it and, after checking its integrity, it can be used for the next project.

[0058] Refer to Figures 1 to 3 , for the construction equipment of the second aspect embodiment of the present application, the construction equipment can be the corresponding equipment for deep foundation pit construction. The construction equipment includes the reinforced concrete support vibrating wire piezometer measuring device of the first aspect embodiment of the present application. By using the vibrating wire load cell 400 with high precision and little influence from external factors, and combining it with the embedded steel plate and the telescopic high-strength connecting screw 310 to form a reusable reinforced concrete support vibrating wire piezometer, which has the characteristics of being reusable and replaceable temporarily. The pressure is borne by the vibrating wire load cell 400, and the tension is borne by the high-strength connecting screw 310, thereby improving the accuracy of measuring the axial force of the reinforced concrete support and avoiding false alarms.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0060] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the purpose of the present application.

Claims

1. A reinforced concrete support axial force measurement device, characterized in that: include: The first embedded plate; A second embedded plate, spaced apart from the first embedded plate; A tension connection component is arranged between the first embedded plate and the second embedded plate in a tensioned state, one end of the tension connection component is detachably mounted on the first embedded plate, and the other end of the tension connection component is detachably mounted on the second embedded plate; The vibrating-wire reaction force meter is arranged between the first embedded plate and the second embedded plate in a compressed state, one end of the vibrating-wire reaction force meter abuts the first embedded plate, and the other end of the vibrating-wire reaction force meter abuts the second embedded plate.

2. The reinforced concrete support axial force measuring device according to claim 1 is characterized in that: The tension connection component includes a connecting screw, a first connecting nut and a second connecting nut. Both ends of the connecting screw are set as positive and negative threads. One end of the connecting screw passes through the first embedded plate and is threadedly connected to the first connecting nut, and the other end of the connecting screw passes through the second embedded plate and is threadedly connected to the second connecting nut.

3. The reinforced concrete support axial force measuring device according to claim 2 is characterized in that: The tension connection component includes a first sleeve and a second sleeve, the first sleeve is sleeved outside the first connection nut, and the second sleeve is sleeved outside the second connection nut.

4. The reinforced concrete support axial force measuring device according to claim 3 is characterized in that: A first limiting groove is provided in the first sleeve, and the first connecting nut is located in the first limiting groove, so that the first limiting groove can limit the circumferential rotation of the first connecting nut; A second limiting groove is provided in the second sleeve, and the second connecting nut is located in the second limiting groove, so that the second limiting groove can limit the circumferential rotation of the second connecting nut.

5. The reinforced concrete support axial force measuring device according to claim 4 is characterized in that: The first connecting nut is slidably disposed in the first limiting groove along the axial direction of the first sleeve; The second connecting nut is slidably disposed in the second limiting groove along the axial direction of the second sleeve.

6. The reinforced concrete support axial force measuring device according to claim 5, characterized in that: The first connecting nut and the second connecting nut are configured as hexagonal nuts, and the cross-sectional shapes of the first limiting groove and the second limiting groove are also hexagonal.

7. The reinforced concrete support axial force measuring device according to claim 1, characterized in that: The reinforced concrete support axial force measuring device also includes a reaction force mounting frame, one end of which abuts the first embedded plate, one end of the vibrating string reaction force meter is arranged at the other end of the reaction force mounting frame, and the other end of the vibrating string reaction force meter abuts the second embedded plate.

8. The reinforced concrete support axial force measuring device according to claim 7, characterized in that: A first pad is provided between one end of the reaction force mounting frame and the first embedded plate, and a second pad is provided between the other end of the vibrating wire reaction force meter and the second embedded plate.

9. The reinforced concrete support axial force measuring device according to claim 1, characterized in that: The first embedded plate and the second embedded plate are provided with embedded reinforcements, and each of the embedded reinforcements is provided with a concrete structure.

10. A construction equipment, characterized in that: include: A reinforced concrete support axial force measuring device as claimed in any one of claims 1 to 9.

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