CN117825019A - Evacuation platform support loading test system and method - Google Patents
Evacuation platform support loading test system and method Download PDFInfo
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- CN117825019A CN117825019A CN202311775704.1A CN202311775704A CN117825019A CN 117825019 A CN117825019 A CN 117825019A CN 202311775704 A CN202311775704 A CN 202311775704A CN 117825019 A CN117825019 A CN 117825019A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention provides a loading test system and a loading test method for an evacuation platform support, which comprise a platform support to be tested, wherein the platform support to be tested is arranged at the lower end of an evacuation platform and is used for supporting the evacuation platform and is horizontally fixed on the inner wall of a tunnel duct piece; the pulleys are fixed on the support of the platform to be tested and the inner wall of the tunnel duct piece in a staggered manner; and a rope, one end of which is a free end and the other end of which is a fixed end; the fixed end is fixed on a pulley close to the end parts of the tunnel segment and the platform support to be tested, and the free end continuously and orderly bypasses the pulley on the inner wall of the tunnel segment and the platform support to be tested for many times and finally receives downward tension through the tension device. According to the invention, a large amount of carrying and stacking are not needed, load simulation can be realized by only applying tension to the rope, potential safety hazards caused by steel girder collapse or improper stacking and stacking of stacked objects are effectively avoided, and compared with the traditional method, the method also saves a large amount of manpower, material resources and time cost, and improves the construction efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a system and a method for testing the loading of a support of an evacuation platform.
Background
In civil engineering of evacuation platform, in order to ensure safety and stability of the evacuation platform, the evacuation platform support needs to perform spot sampling inspection of designing load bearing capacity after entering the field. Only when the detection result meets the related specification requirements, the bracket can be put into use. Conventional inspection methods typically require stacking a large number of iron pads or other weights over the platform plate to simulate a uniform load. However, this approach has a number of potential hazards; the iron backing plate has a weight of about 12.2kg, the total weight of each span of the stacking load is more than 1500kg, and the stacking height is high due to the heavy load, so that the stacking process is difficult, and great potential safety hazards exist.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a system and a method for testing the loading of a support of an evacuation platform.
The specific technical scheme is as follows:
an evacuation platform support loading test system, comprising:
the platform bracket to be tested is arranged at the lower end of the evacuation platform and used for supporting the evacuation platform, and one end part of the platform bracket is anchored on the inner wall of the tunnel duct piece;
the pulleys are fixed on the support of the platform to be tested and the inner wall of the tunnel duct piece in a staggered manner; and
one end of the rope is a free end, and the other end of the rope is a fixed end; the fixed end is fixed on a pulley close to the connection point of the tunnel segment and the platform support to be tested, and the free end continuously and orderly bypasses the pulley on the inner wall of the tunnel segment and the platform support to be tested for many times and finally receives downward tension through the tension device.
Optionally, the platform support to be tested is anchored on the tunnel segment through an anchor bolt or an embedded sleeve.
Optionally, the plurality of pulleys on the platform support to be tested are located on the same horizontal line.
Optionally, the plurality of pulleys on the platform support to be tested are uniformly distributed on the platform support to be tested at equal intervals.
Optionally, the plurality of pulleys on the inner wall of the tunnel segment to be treated are arranged along the circumferential direction of the inner wall of the tunnel segment.
Alternatively, the pulling device may be provided as a jack or a hydraulic crane.
Optionally, the rope is made of a steel wire rope, the steel wire rope is formed by twisting a plurality of steel wires, and a corrosion-resistant protective layer can be coated on the surface of the steel wire rope.
A test method of an evacuation platform support loading test system comprises the following steps:
s1, horizontally fixing a to-be-tested platform bracket on the inner wall of a tunnel segment;
s2, sequentially installing pulleys on the inner wall of the tunnel segment and the platform bracket to be tested;
s3, fixing the fixed end of the rope on a pulley close to the inner wall of the tunnel segment and the end part of the platform support to be tested, sequentially and alternately passing the free end of the rope through the platform support to be tested and the pulley on the tunnel segment from the first pulley, and finally fixedly connecting the free end of the rope through a tension device to enable the rope to be subjected to downward tension.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the pulleys are uniformly arranged at the bottom of the steel beam to be tested, the pulleys are correspondingly arranged on the tunnel segment structure below the steel beam and form the pulley block with the pulley at the bottom of the steel beam, the pulley block is connected by adopting the rope, and the uniform load of the steel beam loading test can be simulated by applying fixed tension to the rope; the traditional detection method has the advantages that a large amount of heavy objects are required to be carried, time and labor are wasted, the method does not need to carry and pile the heavy objects in a large amount, load simulation can be realized by only applying tension to the ropes, potential safety hazards caused by steel girder collapse or improper pile loading and collapse of the piled objects are effectively avoided, the pulley block and the ropes are adopted for connection, the stability is higher, the accident risk is reduced, and in addition, compared with the traditional method, a large amount of manpower, material resources and time cost are saved, the construction efficiency is improved, the method is suitable for various evacuation platforms, the operation is convenient, and the accuracy of detection results can be ensured.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an evacuation platform support loading test system according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of an evacuation platform support loading test system for displaying a platform support to be tested according to an embodiment of the present invention.
In the figure: 1. a platform bracket to be tested; 2. an evacuation platform; 3. tunnel segment; 4. a pulley; 5. a rope; 51. a fixed end; 52. a free end.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The evacuation platform support loading test system provided by the invention, referring to figures 1-2, comprises:
the platform bracket 1 to be tested is arranged at the lower end of the evacuation platform 2 and used for supporting the evacuation platform 2 and is horizontally fixed on the inner wall of the tunnel segment 3; the platform bracket 1 to be tested can be arranged to be fixed on the inner wall of the tunnel segment 3 by a horizontal cross beam, and can also be arranged to be a horizontal cross beam and an inclined support, wherein one end of the inclined support is fixed on the inner wall of the tunnel segment 3, and the horizontal cross beam is fixed on the inclined support and is fixed on the inner wall of the tunnel segment 3 by the inclined support;
the pulleys 4 are fixed on the inner walls of the platform bracket 1 to be tested and the tunnel segment 3 in a staggered manner, and the pulleys 4 mainly comprise a wheel and a shaft; and
a rope 5 having a free end 52 at one end and a fixed end 51 at the other end; the fixed end 51 is fixed on a pulley 4 near the connection point of the tunnel segment 3 and the platform bracket 1 to be tested, the free end 52 continuously and orderly bypasses the pulley 4 on the inner wall of the tunnel segment 3 and the platform bracket 1 to be tested for many times, when the rope 5 is wound on the pulley 4, the pulley 4 can adjust the rope 5 according to the direction and the size of the force, and finally the free end 52 of the rope 5 wound on a plurality of pulleys 4 is subjected to downward tension through the tension device.
A plurality of pulleys 4 are uniformly arranged at the bottom of a platform bracket 1 to be tested, a plurality of pulleys 4 are correspondingly arranged on a tunnel segment 3 structure below a steel beam, a pulley 4 set is formed by pulley sliding at the bottom of the steel beam, a rope 5 is adopted to connect the pulley 4 set, and uniform load of a steel beam loading test can be simulated by applying fixed tension to the rope 5; the traditional detection method needs to carry a large number of heavy objects, wastes time and labor, the method does not need to carry a large number of piled loads, load simulation can be realized by only applying tension to the ropes 5, potential safety hazards caused by steel girder collapse or improper piled load and improper collapse of piled loads are effectively avoided, the pulley 4 groups are connected with the ropes 5, stability is high, the accident risk is reduced, in addition, compared with the traditional method, the novel method saves a large number of manpower, material resources and time cost, construction efficiency is improved, the method is suitable for various evacuation platforms 2, operation is convenient, and accuracy of detection results is ensured.
In this embodiment, in order to ensure stability and safety of the tunnel structure, the platform support 1 to be tested is anchored on the tunnel segment 3 through an anchor bolt or an embedded sleeve, and may be fixed on the tunnel segment 3 in other stable fixing modes such as a chemical anchor bolt; in general, the platform support 1 to be tested is made of reinforced concrete or steel structure to ensure sufficient strength, rigidity and durability. In the construction process, the mounting position of the platform bracket 1 to be tested is strictly positioned according to a design drawing, and a sleeve or an anchor bolt is pre-buried on the tunnel segment 3 according to the drawing requirement so as to ensure that the connection between the platform bracket 1 to be tested and a tunnel structure is firm and reliable; when the platform bracket 1 to be tested is installed, the perpendicularity and levelness of the platform bracket 1 to be tested are also required to be adjusted so as to meet the standard requirement; the fixing manner of the anchor bolt or the embedded sleeve on the to-be-detected platform bracket 1 is various, such as unilateral anchoring, bilateral anchoring and the like, the tightening degree of the anchor bolt is controlled according to design requirements so as to ensure that the anchoring force between the to-be-detected platform bracket 1 and the tunnel segment 3 reaches a specified value, wherein the fixing manner of the embedded sleeve is filled with grouting materials so as to ensure firm connection between the to-be-detected platform bracket 1 and the tunnel segment 3. Finally, after the anchoring of the platform support 1 to be detected is finished, the anchoring effect is detected, and the method mainly comprises the steps of checking the tightening force of an anchoring bolt, the filling quality of an embedded sleeve, the connection condition of the platform support 1 to be detected and the tunnel duct piece 3, and the like, and if a problem is found, measures should be taken in time to carry out rectification so as to ensure the safety and stability of the tunnel structure.
Specifically, the plurality of pulleys 4 on the platform support 1 to be tested are located on the same horizontal line, which means that the pulleys 4 are located on the same plane and have the same vertical height, on the platform support 1 to be tested, the pulleys 4 play a role in bearing the tensile force, when the plurality of pulleys 4 are located on the same horizontal line, the pulleys can jointly distribute the tensile force, so that the bearing pressure of the single pulley 4 is reduced, the stability and the bearing capacity of the platform support 1 to be tested can be ensured by the plurality of pulleys 4 located on the same horizontal line, the effective simulation of the load of the platform support 1 to be tested can be realized, and the accuracy of the detection result is further ensured.
In addition, a plurality of pulleys 4 on the platform support 1 to be tested are uniformly distributed on the platform support 1 to be tested at equal intervals, and the tensile force born by the pulleys 4 can be uniformly distributed on the whole platform support 1 to be tested, so that effective simulation of the load of the platform support 1 to be tested is further ensured.
Treat a plurality of pulleys 4 on tunnel segment 3 inner wall for setting up along tunnel segment 3 inner wall hoop, can play the guide effect to rope 5, can support rope 5, guarantee entire system's stability, simultaneously, a plurality of pulleys 4 are for evenly setting up along tunnel segment 3 inner wall hoop equidistance, can guarantee the effective analog test of the whole span load of platform support 1 that awaits measuring.
The tension device can be set as a jack or a hydraulic crane, and the jack is equipment for realizing lifting by utilizing a hydraulic principle and has the characteristics of simple structure, convenient operation, high lifting speed and the like. In the engineering field, the variety of jacks is various, including manual jacks, electric jacks, hydraulic jacks and the like; the hydraulic crane converts low-power hydraulic oil into high-power output by utilizing a hydraulic transmission principle, has the characteristics of high lifting capacity, stable operation, high adaptability and the like, and can be selected and used according to actual working conditions.
The rope 5 is made of a steel wire rope formed by twisting a plurality of steel wires, and the surface steel wire rope can be coated with a corrosion-resistant protective layer which is mainly made of high-performance synthetic resin, and can effectively prevent the steel wire rope from being corroded and worn in the use process.
The invention provides a test method of an evacuation platform support loading test system, which comprises the following steps:
s1, horizontally fixing a to-be-tested platform bracket 1 on the inner wall of a tunnel segment 3 in order to ensure that the to-be-tested platform bracket 1 can stably bear load in a subsequent test process and keep a good horizontal state;
s2, sequentially installing pulleys 4 on the inner wall of the tunnel segment 3 and the platform bracket 1 to be tested, wherein the installation positions and the number of the pulleys 4 need to be carefully calculated so as to ensure that the rope 5 can bear even tension when passing through each pulley 4;
s3, fixing the fixed end 51 of the rope 5 on a pulley 4 close to the inner wall of the tunnel segment 3 and the end part of the platform support 1 to be tested, sequentially and alternately passing the free end 52 of the rope 5 through the platform support 1 to be tested and the pulley 4 on the tunnel segment 3 from the first pulley 4, and finally fixing and connecting the free end 52 of the rope 5 through a tension device to enable the rope 5 to be subjected to downward tension, wherein in order to simulate the load borne by the platform support 1 to be tested in the actual evacuation process, the size and duration of the tension need to be adjusted according to experimental requirements so as to ensure that the platform support 1 to be tested can show good bearing performance and safety performance under different load conditions.
In the whole test process, the displacement, strain, load and other parameters of the platform support 1 to be tested need to be monitored in real time. Through analysis of the data, performance of the platform support 1 to be tested in the actual evacuation process can be estimated, and a powerful basis is provided for design and optimization of the evacuation platform 2. In addition, the invention can also adjust the test parameters according to the actual requirements, thereby adapting to the test requirements of the evacuation platform 2 under different scenes.
In summary, the evacuation platform support loading test system and the test method thereof provided by the invention can effectively evaluate the bearing capacity and the safety performance of the beam of the evacuation platform 2, and provide powerful guarantee for the design, construction and acceptance of the evacuation platform 2. Meanwhile, the method has the advantages of simplicity and convenience in operation, high testing efficiency and the like, and is suitable for loading tests of the beams of various evacuation platforms 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included in the scope of the present invention.
Claims (8)
1. The evacuation platform support loading test system is characterized by comprising
The platform bracket to be tested is arranged at the lower end of the evacuation platform and used for supporting the evacuation platform and is horizontally fixed on the inner wall of the tunnel duct piece;
the pulleys are fixed on the support of the platform to be tested and the inner wall of the tunnel duct piece in a staggered manner; and
one end of the rope is a free end, and the other end of the rope is a fixed end; the fixed end is fixed on a pulley close to the inner wall of the tunnel segment and the end part of the platform support to be tested, and the free end continuously and orderly bypasses the pulley on the inner wall of the tunnel segment and the pulley on the platform support to be tested for many times and finally receives downward tension through the tension device.
2. An evacuation platform support loading test system according to claim 1, wherein the platform support to be tested is anchored to the tunnel duct piece by means of an anchor bolt or an embedded sleeve.
3. An evacuation platform support loading test system according to claim 1, wherein the plurality of pulleys on the platform support to be tested are located on the same horizontal line.
4. An evacuation platform support loading test system according to claim 1, wherein the plurality of pulleys on the platform support to be tested are equally spaced apart on the platform support to be tested.
5. An evacuation platform support loading test system according to claim 1, wherein the plurality of pulleys on the inner wall of the tunnel segment to be tested are circumferentially arranged along the inner wall of the tunnel segment.
6. An evacuation platform support loading test system according to claim 1, wherein the tension device is configured as a jack or a hydraulic crane.
7. An evacuation platform support loading test system according to claim 1, wherein the rope is made of a steel wire rope, the steel wire rope is formed by twisting a plurality of steel wires, and a corrosion-resistant protective layer can be coated on the surface of the steel wire rope.
8. A method of testing an evacuation platform support loading test system according to any of claims 1-7, comprising the steps of:
s1, horizontally fixing a to-be-tested platform bracket on the inner wall of a tunnel segment;
s2, sequentially installing pulleys on the inner wall of the tunnel segment and the platform bracket to be tested;
s3, fixing the fixed end of the rope on a pulley close to the inner wall of the tunnel segment and the end part of the platform support to be tested, sequentially and alternately passing the free end of the rope through the platform support to be tested and the pulley on the tunnel segment from the first pulley, and finally fixedly connecting the free end of the rope through a tension device to enable the rope to be subjected to downward tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311775704.1A CN117825019A (en) | 2023-12-21 | 2023-12-21 | Evacuation platform support loading test system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311775704.1A CN117825019A (en) | 2023-12-21 | 2023-12-21 | Evacuation platform support loading test system and method |
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| CN117825019A true CN117825019A (en) | 2024-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119023233A (en) * | 2024-08-28 | 2024-11-26 | 无锡麦诺威管业有限公司 | Photovoltaic support strength detection device |
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2023
- 2023-12-21 CN CN202311775704.1A patent/CN117825019A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119023233A (en) * | 2024-08-28 | 2024-11-26 | 无锡麦诺威管业有限公司 | Photovoltaic support strength detection device |
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