CN110823940A - Steel shell concrete combined structure component thermal coupling loading test device and method - Google Patents
Steel shell concrete combined structure component thermal coupling loading test device and method Download PDFInfo
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- CN110823940A CN110823940A CN201911184435.5A CN201911184435A CN110823940A CN 110823940 A CN110823940 A CN 110823940A CN 201911184435 A CN201911184435 A CN 201911184435A CN 110823940 A CN110823940 A CN 110823940A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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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
- G01N3/02—Details
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- 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
- G01N2203/0019—Compressive
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- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
Abstract
The invention relates to a steel shell concrete combined structure member thermal coupling loading test device and method, and belongs to the technical field of safety engineering experiments. The test device comprises a bearing frame, a force sensor, a jack, a displacement meter, a heat insulation cushion block and a test member; a plurality of thermocouple temperature sensors are arranged in the test component; on the plane of the test component, the thermocouple temperature sensors are uniformly arranged and are symmetrical about the transverse partition plate and the longitudinal partition plate; in the thickness direction of the test member, the thermocouple temperature sensors are arranged in a gradient. The invention can obtain the mechanical behavior of the steel shell concrete composite structure under the high temperature of fire, which comprises the following steps: the temperature distribution rule of the section of the component at high temperature of fire, the deformation development rule of the component, the damage evolution characteristic under the action of thermal coupling and the like; the invention can also obtain the bearing capacity change of the steel shell concrete composite structure under the fire working condition, and the influence of the high temperature of the fire on the bearing capacity of the member is evaluated by comparing the mechanical characteristic test results of the member before and after the fire resistance test.
Description
Technical Field
The invention belongs to the technical field of safety engineering experiments, and relates to a steel shell concrete combined structural member thermal coupling loading test device and method.
Background
The steel shell immersed tube tunnel structure is complex, and the external steel shell of the steel shell has two functions of water resistance and bearing, so that the stability and durability of the steel shell have important significance for the safety of the whole tunnel structure. Due to the large size, the ocean and river environment, the deepwater condition and the like of the submarine immersed tube tunnel, once a fire disaster happens, the consequences are more serious than those of a land traffic tunnel, and the repair is extremely difficult. With the rise of heat tide in the construction of immersed tube tunnels, the strengthening of the basic theory research of disaster prevention of immersed tube tunnels is an urgent task. The mechanical behavior and functional characteristics of the steel shell concrete composite structure at high temperature of fire lack a research foundation, so that the method for determining the thermal coupling loading test of the steel shell concrete composite structure member has important engineering significance aiming at the working characteristics of the steel shell concrete composite structure.
Disclosure of Invention
In view of the above, the present invention provides a steel shell concrete composite structure member thermal coupling loading test apparatus and method, which are used for researching mechanical behaviors of a steel shell concrete composite structure at a high temperature of a fire, including a member section temperature distribution rule at the high temperature of the fire, a member deformation development rule, a damage evolution characteristic under a thermal coupling effect, etc.; the bearing capacity change of the steel shell concrete composite structure under the fire working condition is researched, and the influence of the high temperature of the fire on the bearing capacity of the member is evaluated by comparing the mechanical characteristic test results of the member before and after the fire resistance test.
In order to achieve the purpose, the invention provides the following technical scheme:
1. a steel shell concrete combined structure member thermal coupling loading test device comprises a bearing frame (1), a force sensor (2), a jack (3), a displacement meter (4), a heat insulation cushion block (5) and a test member (6);
the test component (6) is arranged on the test bench support (7) of the mounting seat and used for supporting the test component;
the displacement meter (4) is arranged on the surface of a test component corresponding to the position of the experiment table support, and the bottom of the test component spans the middle and 2 quarter points, and is used for detecting displacement data of the test component in the pressure loading test process;
the force sensor (2) is arranged between the bearing frame (1) and the jack (3) and is used for detecting the pressure born by the test member in the test engineering;
the heat insulation cushion block (5) is placed between the jack (3) and the test component (6) and used for isolating heat of the test component (6) and protecting the test component.
Furthermore, a plurality of thermocouple temperature sensors are arranged inside the test component (6); on the plane of the test component, the thermocouple temperature sensors are uniformly arranged and are symmetrical about the transverse partition plate and the longitudinal partition plate; in the thickness direction of the test member, the thermocouple temperature sensors are arranged in a gradient.
Furthermore, the data acquisition unit is respectively connected with each displacement meter and the thermocouple temperature sensor to record a displacement-time curve and a temperature-time curve.
Further, the test member (6) consists of an inner steel plate, a steel shell and concrete, wherein the inner steel plate consists of transverse and longitudinal partition plates and short steel plates, and the short steel plates are divided into transverse and longitudinal short steel plates; the transverse partition plate and the longitudinal partition plate are vertical to each other, and two ends of the transverse partition plate and two ends of the longitudinal partition plate are connected with the steel shell; and only one end of the transverse and longitudinal short steel plates is connected with the steel shell, and the other end of the transverse and longitudinal short steel plates is suspended in the test component.
Further, the longitudinal short steel plate is a T-shaped steel plate; welding nails are distributed on the transverse short steel plate at equal intervals.
Furthermore, the transverse partition plate and the longitudinal partition plate divide the interior of the test member (6) into large intervals with equal size, and the short steel plates are uniformly distributed in the large intervals.
2. A steel shell concrete composite structure member thermal coupling loading test method specifically comprises the following steps:
1) hoisting the test component (6) above the fire-resistant test furnace by a travelling crane and placing the test component on a test bed support (7);
2) the displacement meters (4) are connected, the thermocouple temperature sensors are communicated with the data acquisition unit, and the force sensors (2) and the heat insulation cushion blocks (5) are arranged at the end parts of the jacks (3);
3) before the test is started, pre-loading and unloading the steel shell concrete member, applying a design load to the member to enable the load to be in a stable state, and recording the deformation data of the member;
4) opening a data acquisition device, and recording a temperature-time curve and a displacement-time curve; igniting the fire-resistant test furnace, and heating the component;
5) the data acquisition unit records the temperature of each measuring point and the structural displacement value of the component from the moment of ignition, and observes the macroscopic damage phenomenon and deformation characteristics displayed by the component until the fire resistance test is finished or the structural component is damaged, and stops the test;
6) after the fire resistance test is finished, carrying out a static load test on each member, measuring deformation through 5 displacement meters which are arranged on a support, a span and 2 quartering points, loading step by step, recording the structural displacement, the structural damage characteristic and the deformation characteristic of each measuring point in the test process until the structural member is destroyed, stopping the test, and recording the maximum load applied during the destruction;
7) and (3) arranging and analyzing the acquired test data, comparing the deformation conditions and the bearing capacity reduction effects of the structural members at different test stages and under different fire working conditions, and comparing the damage forms, the temperatures and the deformation distribution rules of different members.
Further, in the step 3), when the steel shell concrete member is preloaded, the preload value is 10 kN.
Further, in the step 4), keeping the concentrated load constant in the process of heating the component; the temperature rise process is set according to the determined fire working condition.
Further, in the step 5), the temperature recorder records the temperature of each measuring point and the structural displacement value of the member, specifically: the temperature of each measurement point was recorded every 10s, and the member structure displacement values were recorded every 30 s.
The invention has the beneficial effects that: the invention can obtain the mechanical behavior of the steel shell concrete composite structure under the high temperature of fire, which comprises the following steps: the temperature distribution rule of the section of the component at high temperature of fire, the deformation development rule of the component, the damage evolution characteristic under the action of thermal coupling and the like; the invention can also obtain the bearing capacity change of the steel shell concrete composite structure under the fire working condition, and the influence of the high temperature of the fire on the bearing capacity of the member is evaluated by comparing the mechanical characteristic test results of the member before and after the fire resistance test.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of experimental installation of a test member;
FIG. 2 is a plan view of the internal structure of the test member;
FIG. 3 is a view A-A of FIG. 2;
FIG. 4 is a view B-B of FIG. 2;
FIG. 5 is a plan view of a test member with a thermocouple temperature sensor mounted thereon;
FIG. 6 is a front side view of FIG. 5;
FIG. 7 is a left side view of FIG. 5;
reference numerals: the method comprises the following steps of 1-bearing frame, 2-force sensor, 3-jack, 4-displacement meter, 5-heat insulation cushion block, 6-test member, 7-test bench support, 61-thermocouple temperature sensor, 62-transverse partition plate, 63-longitudinal partition plate, 64-welding nail, 65-longitudinal short steel plate, 66-transverse short steel plate, 67-concrete and 68-steel shell.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 7, fig. 1 is a thermal coupling loading test device for a steel-shell concrete combined structural member, which includes a bearing frame 1, a force sensor 2, a jack 3, a displacement meter 4, a heat insulation cushion block 5 and a test member 6;
the test component 6 is arranged on the base and the experiment table support 7 and used for supporting the test component. The displacement meter 4 is arranged on the surface of the test component corresponding to the position of the experiment table support, and the bottom of the test component spans the middle and 2 four-point positions, and is used for detecting displacement data of the test component in the pressure loading test process. The force sensor 2 is arranged between the force bearing frame 1 and the jack 3 and is used for detecting the pressure born by the test member in the test engineering. The heat insulation cushion block 5 is arranged between the jack 3 and the test component 6, and is used for insulating heat of the test component 6 and protecting the test component.
A plurality of thermocouple temperature sensors are arranged in the test component 6; on the plane of the test component, the thermocouple temperature sensors are uniformly arranged and are symmetrical about the transverse partition plate and the longitudinal partition plate; in the thickness direction of the test member, the thermocouple temperature sensors are arranged in a gradient. The data acquisition unit is respectively connected with each displacement meter and the thermocouple temperature sensor and records a displacement-time curve and a temperature-time curve. The test member consists of an internal steel plate, a steel shell and concrete, wherein the internal steel plate consists of transverse and longitudinal partition plates and short steel plates, and the short steel plates are divided into transverse and longitudinal short steel plates; the transverse partition plate and the longitudinal partition plate are vertical to each other, and two ends of the transverse partition plate and two ends of the longitudinal partition plate are connected with the steel shell; and only one end of the transverse and longitudinal short steel plates is connected with the steel shell, and the other end of the transverse and longitudinal short steel plates is suspended in the test component. The longitudinal short steel plate is a T-shaped steel plate; welding nails are distributed on the transverse short steel plate at equal intervals. The transverse partition plate and the longitudinal partition plate divide the interior of the test component into large equal intervals, and the short steel plates are uniformly distributed in the large intervals.
Example (b): the model of the test member is provided by the embodiment, and reflects the geometric characteristics, the structural characteristics and the mechanical characteristics of the steel shell concrete structure, so that the section type of the member is determined firstly, then the span of the member is determined, and the size of the test member is determined. As shown in FIGS. 2 to 4, the test member had a total length of 2m, a beam height of 0.5m and a width of 0.5 m. The thicknesses of the inner steel plate and the outer steel plate (namely the steel shell) of the member are both 10mm, the steel material adopts Q420B, the thicknesses of the transverse partition plate and the longitudinal partition plate are 4mm, the steel material adopts Q390B, and the rest steel material adopts Q345B. The distance between the longitudinal clapboards is 1m, and the strength of the concrete is C50. Firstly, cutting each steel plate according to the size requirement, drawing the positioning lines of the welding nails on the steel plates, and welding the welding nails with specified sizes on the corresponding positioning lines (the distance between the welding nails 64 is 100 mm). Secondly, assembling the steel plates welded with the welding nails, welding and assembling according to design requirements (the distance between the longitudinal short steel plates is 300mm, the distance between the transverse short steel plates is 100mm), ensuring the position accuracy of each steel plate as much as possible in the welding process, processing steel products to be implemented in corresponding steel member manufacturing companies, mixing concrete in laboratories, and pouring and maintaining.
The temperature measuring points of the steel shell concrete composite structure are arranged as shown in figures 5-7, the influence of the transverse partition plate and the longitudinal partition plate on temperature transmission is considered, the connecting part of the transverse partition plate and the longitudinal partition plate in the pipe joint structure is taken as a manufactured component, and the temperature measuring points on the plane are symmetrically arranged along the transverse partition plate and the longitudinal partition plate (the transverse distance between the temperature measuring points is 500mm, and the longitudinal distance between the temperature measuring points is 125 mm); in the depth direction of the section of the component, temperature measuring points are arranged at different positions from the bottom surface of the component according to a certain gradient, and the arrangement intervals of the temperature measuring points are gradually increased from the fire-receiving surface to the back fire surface according to the rule of 25mm, 50mm, 100mm and 200 mm.
The thermal coupling loading test method based on the steel shell concrete combined structural member constructed in the embodiment specifically comprises the following steps:
1) hoisting a test component above a fire-resistant test furnace by using a travelling crane and placing the test component on a support of a test bench;
2) connecting each displacement meter, thermocouple temperature sensors and communicating with a data acquisition unit, and arranging force sensors and heat insulation cushion blocks at the end parts of the jacks;
3) before the test starts, the steel shell concrete member is preloaded to a preload value of 10kN and then unloaded, and the operation aims to enable each data acquisition device to enter a normal working state and enable the load and displacement relationship to tend to be stable. Then applying a design load to the component to enable the load to be in a stable state, and recording the deformation data of the component at the moment;
4) and opening the data acquisition instrument to prepare for recording a temperature-time curve and a displacement-time curve. And igniting the fire-resistant test furnace to heat the component, and keeping the concentrated load constant in the heating process. Setting the temperature rise process according to the determined fire working condition;
5) the data acquisition unit records the temperature of each measuring point every 10s from the moment of ignition, records the structural displacement value of the component every 30s, observes the macroscopic damage phenomenon and deformation characteristics displayed by the component until the fire resistance test is finished or the structural component is damaged, and stops the test;
6) after the fire resistance test is finished, carrying out a static load test on each member, measuring deformation through 5 displacement meters which are arranged on a support, a span and 2 quartering points, loading step by step, recording the structural displacement, the structural damage characteristic and the deformation characteristic of each measuring point in the test process until the structural member is destroyed, stopping the test, and recording the maximum load applied during the destruction;
7) and (3) arranging and analyzing the acquired test data, comparing the deformation conditions and the bearing capacity reduction effects of the structural members at different test stages and under different fire working conditions, and comparing the damage forms, the temperatures and the deformation distribution rules of different members.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A steel-shell concrete combined structure member thermal coupling loading test device is characterized by comprising a bearing frame (1), a force sensor (2), a jack (3), a displacement meter (4), a heat insulation cushion block (5) and a test member (6);
the test component (6) is arranged on the test bench support (7) of the mounting seat and used for supporting the test component;
the displacement meter (4) is arranged on the surface of a test component corresponding to the position of the experiment table support, and the bottom of the test component spans the middle and 2 quarter points, and is used for detecting displacement data of the test component in the pressure loading test process;
the force sensor (2) is arranged between the bearing frame (1) and the jack (3) and is used for detecting the pressure born by the test member in the test engineering;
the heat insulation cushion block (5) is placed between the jack (3) and the test component (6) and used for isolating heat of the test component (6) and protecting the test component.
2. The steel-shell concrete composite structural member thermal coupling loading test device according to claim 1, wherein a plurality of thermocouple temperature sensors are installed inside the test member (6); on the plane of the test component, the thermocouple temperature sensors are uniformly arranged and are symmetrical about the transverse partition plate and the longitudinal partition plate; in the thickness direction of the test member, the thermocouple temperature sensors are arranged in a gradient.
3. The steel-shelled concrete combined structural member thermal coupling loading test device according to claim 1, wherein the data acquisition unit is respectively connected with each displacement meter and the thermocouple temperature sensor, and records a displacement-time curve and a temperature-time curve.
4. The steel-shell concrete composite structural member thermal coupling loading test device according to claim 1, wherein the test member (6) is composed of an inner steel plate, a steel shell and concrete, the inner steel plate is composed of transverse and longitudinal partition plates and short steel plates, and the short steel plates are divided into transverse and longitudinal short steel plates; the transverse partition plate and the longitudinal partition plate are vertical to each other, and two ends of the transverse partition plate and two ends of the longitudinal partition plate are connected with the steel shell; and only one end of the transverse and longitudinal short steel plates is connected with the steel shell, and the other end of the transverse and longitudinal short steel plates is suspended in the test component.
5. The steel-shelled concrete composite structural member thermal coupling loading test device according to claim 4, wherein the longitudinal short steel plate is a T-shaped steel plate; welding nails are distributed on the transverse short steel plate at equal intervals.
6. The steel-shell concrete composite structural member thermal coupling loading test device according to claim 4, wherein the transverse partition plate and the longitudinal partition plate divide the interior of the test member (6) into large intervals with equal size, and the short steel plates are uniformly distributed in the large intervals.
7. A steel shell concrete composite structure member thermal coupling loading test method is characterized by comprising the following steps:
1) hoisting the test component (6) above the fire-resistant test furnace by a travelling crane and placing the test component on a test bed support (7);
2) the displacement meters (4) are connected, the thermocouple temperature sensors are communicated with the data acquisition unit, and the force sensors (2) and the heat insulation cushion blocks (5) are arranged at the end parts of the jacks (3);
3) before the test is started, pre-loading and unloading the steel shell concrete member, applying a design load to the member to enable the load to be in a stable state, and recording the deformation data of the member;
4) opening a data acquisition device, and recording a temperature-time curve and a displacement-time curve; igniting the fire-resistant test furnace, and heating the component;
5) the data acquisition unit records the temperature of each measuring point and the structural displacement value of the component from the moment of ignition, and observes the macroscopic damage phenomenon and deformation characteristics displayed by the component until the fire resistance test is finished or the structural component is damaged, and stops the test;
6) after the fire resistance test is finished, carrying out a static load test on each member, measuring deformation through 5 displacement meters which are arranged on a support, a span and 2 quartering points, loading step by step, recording the structural displacement, the structural damage characteristic and the deformation characteristic of each measuring point in the test process until the structural member is destroyed, stopping the test, and recording the maximum load applied during the destruction;
7) and (3) arranging and analyzing the acquired test data, comparing the deformation conditions and the bearing capacity reduction effects of the structural members at different test stages and under different fire working conditions, and comparing the damage forms, the temperatures and the deformation distribution rules of different members.
8. The steel-shell concrete composite structural member thermal coupling loading test method according to claim 7, wherein in the step 3), when the steel-shell concrete member is preloaded, the preloading value is 10 kN.
9. The steel-shell concrete combined structural member thermal coupling loading test method according to claim 7, wherein in the step 4), concentrated load is kept constant during the temperature rise of the member; the temperature rise process is set according to the determined fire working condition.
10. The steel-shell concrete combined structural member thermal coupling loading test method according to claim 7, wherein in the step 5), a temperature recorder records the temperature of each measuring point and the structural displacement value of the member, and specifically comprises the following steps: the temperature of each measurement point was recorded every 10s, and the member structure displacement values were recorded every 30 s.
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| CN201911184435.5A CN110823940A (en) | 2019-11-27 | 2019-11-27 | Steel shell concrete combined structure component thermal coupling loading test device and method |
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| CN201911184435.5A CN110823940A (en) | 2019-11-27 | 2019-11-27 | Steel shell concrete combined structure component thermal coupling loading test device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521492A (en) * | 2020-04-29 | 2020-08-11 | 北京凌空天行科技有限责任公司 | Test method for testing reliability of riveting process of steel plate in rocket high-temperature environment |
| CN111751487A (en) * | 2020-07-08 | 2020-10-09 | 招商局重庆交通科研设计院有限公司 | Multifunctional fire-resistant-thermal coupling loading test system |
| CN112903739A (en) * | 2021-02-23 | 2021-06-04 | 应急管理部四川消防研究所 | Fire resistance test method for steel shell concrete structure tunnel fire protection material |
| CN117589498A (en) * | 2024-01-18 | 2024-02-23 | 应急管理部四川消防研究所 | Fireproof test device and method |
| CN117589498B (en) * | 2024-01-18 | 2024-04-19 | 应急管理部四川消防研究所 | Fireproof test device and method |
-
2019
- 2019-11-27 CN CN201911184435.5A patent/CN110823940A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521492A (en) * | 2020-04-29 | 2020-08-11 | 北京凌空天行科技有限责任公司 | Test method for testing reliability of riveting process of steel plate in rocket high-temperature environment |
| CN111751487A (en) * | 2020-07-08 | 2020-10-09 | 招商局重庆交通科研设计院有限公司 | Multifunctional fire-resistant-thermal coupling loading test system |
| CN112903739A (en) * | 2021-02-23 | 2021-06-04 | 应急管理部四川消防研究所 | Fire resistance test method for steel shell concrete structure tunnel fire protection material |
| CN117589498A (en) * | 2024-01-18 | 2024-02-23 | 应急管理部四川消防研究所 | Fireproof test device and method |
| CN117589498B (en) * | 2024-01-18 | 2024-04-19 | 应急管理部四川消防研究所 | Fireproof test device and method |
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