CN108375504B - Anchorage type reaction frame test device suitable for underground space structure - Google Patents

Anchorage type reaction frame test device suitable for underground space structure Download PDF

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Publication number
CN108375504B
CN108375504B CN201810072412.4A CN201810072412A CN108375504B CN 108375504 B CN108375504 B CN 108375504B CN 201810072412 A CN201810072412 A CN 201810072412A CN 108375504 B CN108375504 B CN 108375504B
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reaction frame
anchorage
test device
underground space
frame test
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CN108375504A (en
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朱瑞虎
郑金海
宋荔钦
栾绍伦
秦淑芳
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Hohai University HHU
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Hohai University HHU
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention discloses an anchorage type reaction frame test device suitable for an underground space structure, and relates to the technical field of structural tests. The invention greatly improves the rigidity level of the reaction frame, strengthens the safety guarantee level of applied load, effectively saves the experimental space and has good application prospect for realizing the structural experiment in the negative layer limited experimental space.

Description

Anchorage type reaction frame test device suitable for underground space structure
Technical Field
The invention relates to an anchorage type reaction frame test device suitable for an underground space structure, and belongs to the technical field of structure tests.
Background
The structural experiment and the structural analysis are verification means for ensuring the safe and reliable operation of the structure, the rationality of the structural form and the correctness of the structural analysis can be verified through the structural experiment, and structural characteristic data is provided so as to establish a new analysis model and an engineering theory. The structural experiment becomes a necessary way for researchers to verify the structural theory due to the superiority of the structural experiment, wherein the reaction frame is a necessary device for the structural experiment.
To properly arrange the experimental sites, many plants and teaching laboratories are built on the minus floor of the building to reduce their impact on office and experimental activities. Under this condition, the experimental space is narrow and small relatively, and the effective experimental space that provides is limited, and the reaction frame of this structural style is the beam column structure mostly at present, and the reaction frame occupation of land space of this structural style is big, and rigidity is limited, is difficult to adapt to the structural experiment condition in limited underground space, uses inconveniently.
Disclosure of Invention
The invention aims to reduce the occupied space of the reaction frame, improve the rigidity level of the reaction frame, fully utilize the foundation outside the basement wall and strengthen the safety guarantee level of the static and dynamic load of the basement.
In order to achieve the purpose, the invention provides the following technical scheme:
the anchorage type reaction frame test device suitable for the underground space structure is characterized in that the reaction frame test device is erected on the ground of the underground space structure and is fixed with a wall of the underground space structure; the reaction frame test device comprises a force transmission pull rod, a stress meter, a structural model and an actuator; erecting a vertical column on the ground; the structure model is connected with an actuator, and the actuator is arranged on the upright post; and an anchoring structure is arranged on the outer side of the wall body and is fixed with the reaction frame test device.
The invention relates to an anchorage type reaction frame test device suitable for an underground space structure; the anchoring structure comprises an anchor wall; an anchorage wall is arranged on the outer side of the wall body; backfilling a gap between the anchorage wall and the wall body through filling soil; one end of the force transmission pull rod is connected with the stand column, the other end of the force transmission pull rod extends into the wall body and is fixed with the anchorage wall, and the force transmission pull rod is provided with a stress meter.
The invention relates to an anchorage type reaction frame test device suitable for an underground space structure; the gap between the anchorage wall and the wall body is backfilled by concrete; the force transmission pull rod penetrates through the anchorage wall.
The invention relates to an anchorage type reaction frame test device suitable for an underground space structure, wherein a stand column is a concrete steel square tube stand column; the concrete steel square tube stand column is made by pouring dense concrete inside a steel square tube.
The anchorage type reaction frame test device suitable for the underground space structure also comprises a tensioner; the tension device is arranged on the force transmission pull rod and is close to the upright post.
The anchorage type reaction frame test device suitable for the underground space structure is characterized in that the structure model is fixed on a test bed.
Advantageous effects
The anchorage type reaction frame test device suitable for the underground space structure provided by the invention has the advantages that the rigidity of the structure is greatly improved compared with that of the traditional reaction frame, the safety and reliability of the reaction frame are improved by applying the anchorage structure, the experiment space is occupied at least, and the arrangement of the reaction frame structure in the limited experiment space is convenient.
The anchorage type reaction frame test device suitable for the underground space structure is embedded and fixed below a laboratory foundation to a certain depth to be used as a reaction frame upright post so as to meet the use rigidity requirement of the upright post.
The anchorage type reaction frame test device suitable for the underground space structure is provided with the tensioner so as to adapt to different experimental requirements, adjust the tension degree of the pull rod and control the safety guarantee level of applied load.
The stress meter of the anchorage type reaction frame test device suitable for the underground space structure provided by the invention realizes real-time monitoring of the stress of the pull rod. After the reaction frame structure is arranged and completed, the experiment is used as a driver and a vibrating wire type reaction meter to be installed on the stand column, and the experiment can be carried out after the signal data transmission device is connected.
Drawings
FIG. 1 is a schematic view of an anchorage type reaction frame test apparatus suitable for underground space structures;
FIG. 2 is a schematic cross-sectional view of an anchorage type reaction frame test device suitable for underground space structures;
fig. 3 is a schematic diagram of an anchor type reaction frame test device applicable to an underground space structure applied to a structural model experiment.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention:
fig. 1 is a schematic diagram of an anchorage type reaction frame test device suitable for an underground space structure, which mainly comprises 5 components, namely a stand column 1 made of a poured concrete steel square tube, an anchorage wall 3 embedded and fixed in a laboratory wall body 9, a force transmission pull rod 2 connecting the stand column 1 and the anchorage wall 3, a tensioner 4 for adjusting the tension degree of the force transmission pull rod 2, and a stress meter 5 for monitoring the stress of the force transmission pull rod 2.
Fig. 2 is a schematic sectional view of an anchorage type reaction frame test device suitable for an underground space structure, in which a stand column 1 is embedded at a certain depth below a ground surface 10 in front of a structural model 6, a force transmission pull rod 2 is manufactured, a tensioner 4 and a strain gauge 5 are installed on the force transmission pull rod 2, a wall body 9 behind the structural model 6 is excavated at a certain depth, an anchorage wall 3 is manufactured inside the excavated wall body 9, the force transmission pull rod 2 with the tensioner 4 and the strain gauge 5 installed is connected to the anchorage wall 3, concrete 11 is backfilled in front of the anchorage wall 3, and the other end of the force transmission pull rod 2 is connected to the stand column 1, so that the installation of the whole anchorage type reaction frame test device suitable for the underground space structure is completed.
Fig. 3 shows that the anchorage type reaction frame test device suitable for the underground space structure is applied to a schematic diagram of a structure model experiment, before the structure model experiment is carried out, the structure model 6 is fixed on a test bench 8, an actuator 7 is fixed on the upper part of an upright post 1 of the anchorage type reaction frame test device suitable for the underground space structure, the force application point of the actuator 7 points to the upper part of the structure model 6, and the experiment can be carried out by connecting a related signal transmission device.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1. An anchorage type reaction frame test device suitable for an underground space structure is characterized in that the reaction frame test device is erected on the ground (10) of the underground space structure, and the reaction frame test device penetrates through a wall body (9) of the underground space structure to be fixed with an anchorage wall (3) on the outer side; the reaction frame test device comprises a force transmission pull rod (2), a stress meter (5), a structural model (6) and an actuator (7); erecting a vertical column (1) on the ground (10); the structural model (6) is connected with an actuator (7), and the actuator (7) is arranged on the upright post (1); the method is characterized in that: the outer side of the wall body (9) is provided with an anchoring structure, and the anchoring structure and the pull rod are fixedly restricted; the anchoring structure comprises an anchor wall (3); an anchorage wall (3) is arranged on the outer side of the wall body (9); the anchorage wall (3) and the wall body (9) backfill gaps through filling soil; one end of the force transmission pull rod (2) is fixedly connected with the upright column (1), the other end of the force transmission pull rod penetrates through the wall body (9) to be fixed with the anchorage wall (3), and the force transmission pull rod (2) is provided with a stress meter (5).
2. An anchorage type reaction frame test device suitable for an underground space structure according to claim 1; the method is characterized in that: a gap between the anchorage wall (3) and the wall body (9) is backfilled by concrete (11); the force transmission pull rod (2) penetrates through the anchorage wall (3).
3. An anchorage type reaction frame test device suitable for an underground space structure according to claim 1, characterized in that: the upright column (1) is a concrete steel square tube upright column; the concrete steel square tube stand column is made by pouring dense concrete inside a steel square tube.
4. An anchorage type reaction frame test device suitable for an underground space structure according to claim 1, characterized in that: also comprises a tensioner (4); the tension device (4) is arranged on the force transmission pull rod (2), and the tension device (4) is close to the upright post (1).
5. An anchorage type reaction frame test device suitable for an underground space structure according to claim 1, characterized in that: the structure model (6) is fixed on the test bed (8).
CN201810072412.4A 2018-01-25 2018-01-25 Anchorage type reaction frame test device suitable for underground space structure Active CN108375504B (en)

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