CA3181365C

CA3181365C - Cascaded high-energy earthquake-fire coupled test system

Info

Publication number: CA3181365C
Application number: CA3181365A
Authority: CA
Inventors: Wei Chen; Jihong YE; Jian Jiang; Zhen Guo; Wuchao ZHAO; Rui Li
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2021-05-12
Filing date: 2022-01-28
Publication date: 2023-08-15
Anticipated expiration: 2042-01-28
Also published as: CA3181365A1; WO2022237241A1; CN113252270B; CN113252270A

Abstract

The present disclosure discloses a cascaded high-energy earthquake-fire coupled test system. The system includes a self-balanced loading system, a lifting furnace system, and a fume collecting hood system transversely arranged on an upper end of the lifting furnace system to collect fume; the self-balanced loading system includes two mobile reaction force frames capable of traveling on a first track and a high-temperature self-sensing loading beam transversely arranged on top portions of the two mobile reaction force frames; the lifting furnace system includes a furnace body mounting rack, inside which a combined furnace body is hung, being capable of traveling on a second track, two moving beams are slidably connected to an upper end of the furnace body mounting rack, movable mobile hoist engines are arranged at lower end surfaces of the moving beams, and an operating device is hung on bottom portions of the mobile hoist engines.

Description

CASCADED HIGH-ENERGY EARTHQUAKE-FIRE COUPLED TEST
SYSTEM
TECHNICAL FIELD
[ 0001] The present disclosure relates to the technical field of fire or earthquake-fire coupled, and in particular to a cascaded high-energy earthquake-fire coupled test system.
BACKGROUND
[ 0002] At present, the researches on the mechanism as well as prevention and control of multi-hazard coupled disasters have become a significant national requirement in China. Among them, earthquakes and fires are the most frequently occurring coupled disasters, which may result in critical accidents and disasters. At present, the main steps of an earthquake-fire coupled test in China are to firstly conduct an earthquake simulation vibrating table test, and then after the test is completed, to move the model to a fire test furnace for the fire test.
[0003J However, in the process of the test, there are several following problems that: (1) model damages and residual deformation damages may be caused in the process of moving the test model; (2) the conventional fire test furnace can only be utilized for the test of a component sample, but not for the whole structure of the multi-layer frame, nor for the test of a certain layer on the multi-layer frame; (3) the dimension of the test furnace is fixed, which limits the dimension of the test model; (4) the conventional loading beam cannot be utilized at a high temperature under an open fire, which makes a fire resistance test difficult;
(5) when applying horizontal and vertical forces at the same time, the traditional method is technically difficult and operationally complex, and tends to not be able to guarantee the completely perpendicular loading of the vertical force; (6) when the fire test needs to be conducted in different sites, it is impossible to use the same fume collecting hood system for calorimetric tests at different workstations, whereas using different fume collecting hood systems may result in larger errors in the calorimetric results; and (7) the traditional fume collecting hood system cannot be raised and lowered perpendicularly.

Date Recue/Date Received 2022-11-08 SUMMARY
[ 0004] In view of the above-mentioned technical deficiencies, the objectives of the present disclosure are to provide a cascaded high-energy earthquake-fire coupled test system, which can satisfy the requirements for different earthquake-fire coupled tests.
[ 0005] In order to solve the above-mentioned technical problems, the following technical solutions are adopted in the present disclosure.
[ 0006] Provided in the present disclosure is a cascaded high-energy earthquake-fire coupled test system. The system includes a self-balanced loading system, a lifting furnace system, and a fume collecting hood system transversely arranged on an upper end of the lifting furnace system to collect fume. The self-balanced loading system includes two mobile reaction force frames capable of traveling on a first track, and a high-temperature self-sensing loading beam transversely arranged on top portions of the two mobile reaction force frames.
A plurality of water cavities for cooling are arranged inside the high-temperature self-sensing loading beam, and the mobile reaction force frames include frame bodies fixed on anchor steel beams and .. three-dimensional guiding devices arranged on top portions of the frame main bodies. The high-temperature self-sensing loading beam is embedded in the three-dimensional guiding devices that function to support and limit the high-temperature self-sensing loading beam.
[ 0007] The frame main bodies include two steel uprights, between which are connected frame secondary beams and frame main beams that are adjustable for fixed positions.
The three-dimensional guiding devices are arranged between the two steel uprights and capable of sliding upwards and downwards along the frame main bodies. Actuators are fixed on upper end surfaces of the frame main beams. Thennal insulation hoods are arranged on peripheries of the actuators, and top portions of the actuators are connected to bottom portions of the three-dimensional guiding devices by spherical joints. Upright lifting cylinders are fixed on the .. anchor steel beams, and top portions of protruding ends of the upright lifting cylinders are fixed on lower end surfaces of the frame main beams.
[ 0008] The lifting furnace system includes a furnace body mounting rack, inside which a combined furnace body is hung, being capable of traveling on a second track.
Two moving beams having moving directions perpendicular to a direction of the second track are slidably

2 Date Recue/Date Received 2022-11-08 connected to an upper end of the furnace body mounting rack. Movable mobile hoist engines are arranged at lower end surfaces of the moving beams, and operating devices are hung on bottom portions of the mobile hoist engines. A lifting device configured to control raising and lowering of the combined furnace body is further slidably connected at both ends of the moving beams_ The combined furnace body is in a shape of a square cylinder that is holed from top to bottom, and is assembled by a plurality of furnace body modules. A combustion device is arranged inside the combined furnace body.
[ 0009] The three-dimensional guiding devices include rectangular loading frames, and fixedly connecting racks configured to be connected with the actuators are provided at bottom portions of the rectangular loading frames. A mobile perpendicular plate is movably connected to left and right side plates of the rectangular loading frames respectively. A
plurality of evenly distributed perpendicular-plate roller groups are arranged on the mobile perpendicular plates, and a plurality of evenly distributed flat-plate roller groups are arranged on upper and lower side plates of the rectangular loading frames respectively. Rolling directions of rollers in the .. perpendicular-plate roller groups and the flat-plate roller groups are consistent with a length direction of the high-temperature self-sensing loading beam. Three-sided roller groups in a shape of a "E" to facilitate the installations of the three-dimensional guiding devices inside the mobile reaction force frames are further arranged at left and right sides of the three-dimensional guiding devices. Rollers of the three-sided roller groups are capable of being embedded inside the mobile reaction force frames and rotating perpendicularly.
[ 0010] Preferably, the fume collecting hood system includes a steel structure frame capable of traveling on a third track. A support platform is fixed on a side of the steel structure frame.
A conical fume collecting hood capable of sliding upwards and downwards and a hoisting system capable of controlling the conical fume collecting hood to move upwards and downwards are arranged inside the steel structure frame. An opening at an upper end of the conical fume collecting hood is connected to a fume inlet of a fume collecting pipeline through a telescopic flexible telescopic joint. A fume outlet of the fume collecting pipeline is connected to a fume outlet pipe through the flexible telescopic joint, and the support platform is provided with an automatic telescopic docking device capable of controlling a protruding amplitude of .. the fume outlet pipe. A high-temperature-resistant lifting screen capable of being stretched and contracted is further fixed on a lower end surface at a circumferential edge of the conical fume

3 Date Recue/Date Received 2022-11-08 collecting hood.
[ 0011] Preferably, the combustion device includes a combustion-booster-type combustion module. The combustion-booster-type combustion module includes a plurality of combustion-booster-type combustion units, and the combustion-booster-type combustion units include a combustion-booster-type combustion rack provided with retractable rollers. A
plurality of burner nozzles are fixed on an upper end plate of the combustion-booster-type combustion rack.
A gas inlet and an air inlet are arranged at a lower end of the burner nozzles. The gas inlet is in communication with an external gas through a gas pipe, and the air inlet is in communication with an external blower through an air inlet pipe.
[ 0012] Preferably, the combustion device includes a self-suction-type combustion module.
The self-suction-type combustion module includes a plurality of self-suction-type combustion units, and the self-suction-type combustion units include a self-suction-type combustion rack provided with the retractable rollers. A plurality of combustion pipes that are evenly distributed side by side are arranged at an upper end of the self-suction-type combustion rack. A plurality of evenly distributed combustion holes are arranged on each of the combustion pipes. A self-suction-type gas pipe is connected to both ends of the combustion pipe, and the self-suction-type gas pipe is in communication with the external gas.
[ 0013] Preferably, the furnace body modules include outer layers of the furnace body modules and inner layers of the furnace body modules. The outer layers of the furnace body modules are steel structure frames, and the inner layers of the furnace body modules are lattices of Austenitic chromium-nickel heat-resistant steel. Inside inner grids of the inner layers of the furnace body modules are inlaid refractory fiber cottons.
[ 0014] Preferably, the lifting device includes traction machines respectively fixed at the both ends of the moving beams. One ends of chains on the traction machines are connected to the combined furnace body, and the other ends of the chains are connected to furnace-body counterweight devices. The raising and lowering of the combined furnace body realizes force balance and self-locking through the furnace-body counterweight devices.
[ 0015] Preferably, the thermal insulation hoods are surrounded by a plurality of heat-insulating steel plates that are connected with one another by bolts. Water-cooling pipes that are

4 Date Recue/Date Received 2022-11-08 threaded and abut surfaces of the actuator are further arranged inside the thermal insulation hoods. Both ends of the water-cooling pipes are in sealed connection with water-cooling water inlet holes and water-cooling water outlet holes of the actuators, respectively.
[ 0016] Preferably, a self-balancing steel beam is fixedly connected between the two anchor steel beams. A room-temperature reinforcing beam is fixed on the high-temperature self-sensing loading beam, and the self-balancing steel beam is detachably connected to a ground trench through anchor bolts.
[ 0017] Preferably, a plurality of temperature sensors are arranged on surfaces of the high-temperature self-sensing loading beam and the steel uprights. The temperature sensors are high-intensity magnetic temperature sensors and provided with over-temperature automatic alarm units. The temperature sensors are connected with a console through conductive wires.
[ 0018] The beneficial effects of the present disclosure lie in the followings.
[ 0019] 1) In the present disclosure, the lifting device is utilized to hoist the combined furnace body, whereby the combined furnace body can be hoisted to different heights, and multi-layer frame samples can be tested on different frame layers. In addition, the furnace-body counterweight device is provided in the present disclosure, and after the combined furnace body is hoisted to a specified position, the height of the combined furnace body can be self-locked in the case where the furnace body lifting device is not powered.
[ 0020] 2) The self-balanced loading system of the present disclosure is equipped with the three-dimensional guiding device, through which the horizontal and vertical forces can be exerted simultaneously. Especially in the horizontal loading process, it can ensure that the vertical actuator does not tilt and can permanently maintain the vertical loading.
[ 0021] 3) The bottom portion of the three-dimensional guiding device is fixedly connected to the actuator located inside the mobile reaction force frame, and the vertical force replaces the traditional pressure by pulling force, which solves the problem of the limited net height in the laboratory to the greatest extent. Besides, the actuator is integrated on the mobile reaction force frame, which avoid the problem that the actuator operates in the open-fire and high-temperature environment.

5 Date Recue/Date Received 2022-11-08 [ 0022] 4) The combined furnace body in the present disclosure is composed of furnace body modules. The combined furnace bodies with different dimensions can be formed by different numbers of furnace body modules, and can be suitable for multi-layer frame samples with different dimensions. The combined furnace body has no cover and no bottom, and the top and bottom of the test layer of the multi-layer frame sample serve as the furnace cover and bottom, which reduces the amount of used steel and the weight of hoisting.
[ 0023] 5) The automatic telescopic docking device in the present disclosure is capable of driving the fume outlet pipe to exit and insert into the test pipeline, so as to realize the free docking of the entire fume collecting hood system with different test pipelines at different workstations, thereby avoiding manual working at heights by personnel.
[ 0024] 6) The flexible telescopic joint can be adapted to raise and lower the conical fume collecting hood perpendicularly, which can shorten the perpendicular distance between the fire and the conical fume collecting hood, which in cooperation with the high temperature-resistant lifting screen installed at the bottom portion of the conical fume collecting hoodõ can satisfy the collection effect of the fume collecting hood on the flue gas released by low-power combustion heat, thereby enhancing the calorimetric results of the small-scale test pipeline in high precision.
[ 0025] 7) A combustion device arranged on the ground and projects upwards is provided in the present disclosure, which simulates a real fire more easily. The combustion device is made from steel, which facilitates maintaining and replacing when a damage occured.
[ 0026] 8) The manner for adjusting the height of the high-temperature self-sensing loading beam in the present disclosure is simple, which does not need any working at heights nor any crane assistance.
[ 0027] 9) The mobile reaction force frame in the present disclosure can walk along the first track, thereby realizing the adjustment on the loading length of the high-temperature self-sensing loading beam, so as to satisfy the requirements for different sample dimensions and loading tonnages, wherein the smaller the loading length of the high-temperature self-sensing loading beam, the greater the loading tonnage is.
[ 0028] 10) In the present disclosure, a temperature sensor is provided. The temperature sensor

6 Date Recue/Date Received 2022-11-08 is provided with an over-temperature automatic alarm unit, through which the over-temperature automatic alarm function of the loading beam can be realized to ensure the human and machine safety during the test.
BRIEF DESCRIPTION OF THE DRAWINGS
[ 0029] In order to explain the embodiments of the present disclosure or the technical solutions in the prior art more clearly, the accompanying drawings that need to be used for describing the embodiments or the prior art will be briefly introduced herein. Apparently, the accompanying drawings in the following description are only some embodiments of the present disclosure_ For those of ordinary skilled in the art, other accompanying drawings can also be obtained from these accompanying drawings without any creative efforts.
[ 0030] FIG. 1 illustrates a schematic structural diagram of a cascaded high-energy earthquake-fire coupled test system provided by an embodiment of the present disclosure.
[ 0031] FIG. 2 illustrates a schematic structural diagram of a self-balanced loading system provided by an embodiment of the present disclosure.
[ 0032] FIG. 3 illustrates a schematic diagram of a connection between a high-temperature self-sensing loading beam and a room-temperature reinforcing beam provided by an embodiment of the present disclosure_ [ 0033] FIG. 4 illustrates a schematic structural diagram of a mobile reaction force frame provided by an embodiment of the present disclosure.
[ 0034] FIG. 5 illustrates a schematic structural diagram of a three-dimensional guiding device provided by an embodiment of the present disclosure.
[ 0035] FIG. 6 illustrates a schematic structural diagram of an anchor steel beam provided by an embodiment of the present disclosure.
[ 0036] FIG. 7 illustrates a schematic structural diagram of a thermal insulation hood provided by an embodiment of the present disclosure.

7 Date Recue/Date Received 2022-11-08 [ 0037] FIG. 8 illustrates a schematic structural diagram of a lifting furnace system provided by an embodiment of the present disclosure.
[ 0038] FIG. 9 illustrates a schematic structural diagram of a combustion-booster-type combustion unit provided by an embodiment of the present disclosure.
[ 0039] FIG. 10 illustrates a schematic structural diagram of a self-suction-type combustion unit provided by an embodiment of the present disclosure.
[ 0040] FIG. 11 illustrates a schematic diagram of connections between furnace body modules provided by an embodiment of the present disclosure.
[ 0041] FIG. 12 illustrates a schematic diagram of a connection between a combustion device and a gas end pipeline provided by an embodiment of the present disclosure.
[ 0042] FIG. 13 illustrates a schematic structural diagram of a fume collecting hood system provided by an embodiment of the present disclosure.
[ 0043] FIG. 14 illustrates a schematic structural diagram of a conical fume collecting hood provided by an embodiment of the present disclosure.
[ 0044] FIG_ 15 illustrates a schematic structural diagram of an automatic telescopic docking device provided by an embodiment of the present disclosure.
[ 0045] FIG_ 16 illustrates a schematic structural diagram of a flexible telescopic joint provided by an embodiment of the present disclosure.
[ 0046] FIG_ 17 illustrates a schematic structural diagram (front view) of an earthquake simulation vibrating table provided by an embodiment of the present disclosure.
[ 0047] FIG_ 18 illustrates a schematic structural diagram (top view) of the earthquake simulation vibrating table provided by an embodiment of the present disclosure.
[ 0048] Descriptions of reference numerals.
[ 0049] 1. High-temperature self-sensing loading beam; 2. Room-temperature reinforcing beam; 3. Temperature sensor; 4. Self-balanced loading system; 5. First track;
6. Three-

8 Date Recue/Date Received 2022-11-08 dimensional guiding device; 62. Mobile perpendicular plate; 63. Three-sided roller group; 64.
Perpendicular-plate roller group; 65. Rectangular loading frame; 66. Flat-plate roller group; 67.
Fixedly connecting rack; 7. Actuator; 71. Thermal insulation hood; 72. Water-cooling pipe; 73.
Water-cooling water inlet hole; 74. Water-cooling water outlet hole; 8. Mobile reaction force frame; 81. Steel upright; 82. Frame secondary beam; 81 Frame main beam; 84.
Anchor steel beam; 85. Steel-beam traveling device; 851. Jacking-up upper steel plate; 852.
Jacking-down lower steel plate; 853. Traveling jacking-up cylinder; 854. Frame pulley group; 855. Position-limiting tension bolt; 9. Moving beam; 10. Second track; 11. Wide beam; 12.
Long beam; 13.
Furnace-body counterweight device; 14. Combined furnace body; 151. Inner layer of furnace body module; 152. Outer layer of furnace body module; 153. Lug of furnace body; 154. Corner connection plate; 155. Connection hole; 156. Assembly aperture; 157. Assembly cover; 16.
Operating device; 17. Bottom beam; 18. Traveling device; 19. Installation column; 20.
Hydraulic fixedly supporting leg; 21. Stationary hoist; 22. Mobile hoist; 23.
Traction machine;
241. Combustion-booster-type combustion rack; 242. Retractable roller; 243.
Burner nozzle;
244. Gas pipe; 245. Air inlet pipe; 246. Self-suction-type combustion rack;
247. Self-suction-type gas pipe; 248. Combustion pipe; 249. Combustion hole; 251. Gas main valve; 252.
Pressure gauge; 253. Flow meter; 254. Main gas pipeline; 255. Gas-control main valve; 256.
Gas-control sub valve; 257. Gas control panel; 26. Fume collecting pipeline;
27. Hoisting motor;
28. Conical fume collecting hood; 29. High temperature-resistant lifting screen; 30. Flexible telescopic joint; 31. Driving mechanism; 32. Protection railing; 33. Bottom beam; 34. Loading platform; 35. Maintenance platform; 36. Upright; 37. Support platform; 38.
Horizontal electro-hydraulic pushing rod; 39. Supporting carriage; 40. Steel plate; 41. Fume outlet pipe; 42. Table top; 43. Mechanical guiding rail; 44. Self-aligning bearing; 45. Vibration-table actuator; 46.
Vibration-table reaction frame; 47. Third track.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[ 0050] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the

9 Date Recue/Date Received 2022-11-08 embodiments of the present disclosure, all other embodiments obtained by those of ordinary skilled in the art without any creative efforts shall fall within the protection scope of the present disclosure.
[ 0051] As illustrated in FIGS. 1 to 18, a cascaded high-energy earthquake-fire coupled test system includes a self-balanced loading system, a lifting furnace system, and a fume collecting hood system configured to collect fume.
[ 0052] The self-balanced loading system includes two mobile reaction force frames 8 capable of traveling on a first track 5, and a high-temperature self-sensing loading beam 1 transversely arranged on top portions of the two mobile reaction force frames 8. The mobile reaction force frame 8 includes an anchor steel beam 84 provided with a steel-beam traveling device 85, a frame main body fixed on the anchor steel beam 84 and a three-dimensional guiding device 6 arranged on the top portion of the frame main body. The high-temperature self-sensing loading beam 1 is embedded in the three-dimensional guiding device 6 that functions to support the beam. The frame main body includes two vertically arranged steel uprights 81 in form of H-shaped steel uprights, between which are fixedly connected a frame secondary beam 82 and a frame main beam 83. The frame secondary beam 82 and the frame main beam 83 are arranged in a top-bottom arrangement and are adjustable for the fixed positions through a position adjustment system. The lower ends of the two steel uprights 81 are both fixed on the anchor steel beam 84 by bolts. The three-dimensional guiding device 6 is arranged between the two steel uprights 81 and capable of sliding upwards and downwards along the frame main body.
An actuator 7 is fixed on the upper end surface of the frame main beam 83.
Thermal insulation hoods 71 are arranged on peripheries of the actuators 7, and the top portion of the actuator 7 is connected to the bottom portion of the three-dimensional guiding device 6 by spherical joints.
An upright lifting cylinder 86 is fixed on the anchor steel beam 84, and the top portion of the protruding end of the upright lifting cylinder 86 is fixed on the lower end surface of the frame main beam 83.
[ 0053] The three-dimensional guiding device 66 includes a rectangular loading frame 65, and a fixedly connecting rack 67 configured to be connected with the actuator 7 are provided at bottom portions of the rectangular loading frames 65, a mobile perpendicular plate 62 is movably connected to left and right side plates of the rectangular loading frames 65 respectively, Date recue/Date received 2023-03-10 a plurality of evenly distributed perpendicular-plate roller groups 64 are arranged on the mobile perpendicular plates 62, a plurality of evenly distributed flat-plate roller groups 66 are arranged on upper and lower side plates of the rectangular loading frames 65 respectively, rolling directions of rollers in the perpendicular-plate roller groups 64 and the flat-plate roller groups 66 are consistent with a length direction of the high-temperature self-sensing loading beam 1, three-sided roller groups 63 in a shape of a "C" to facilitate the installations of the three-dimensional guiding devices inside the mobile reaction force frames 8 are further arranged at left and right sides of the three-dimensional guiding devices 6, and rollers of the three-sided roller groups 63 are capable of being embedded inside the mobile reaction force frames 8 and rotating perpendicularly.
[ 0054] A plurality of bolts are in threaded connection to the respective left and right side plates of the rectangular loading frames 65, and one end of the bolt is rotatably connected to the adjacent mobile perpendicular plate 62.
[ 0055] The position adjustment system includes a plurality of bolts threadedly connected to the frame main beam 83 and the frame secondary beam 82, and bolt holes arranged in a plurality of rows and adapted to the bolts are evenly distributed on the steel uprights 81.
[ 0056] The bottom portions at the four corners of the anchor steel beam 84 are provided with supporting seats that can be embedded and fixed in the ground trenchs, The supporting seats are detachably connected to the ground trenchs by anchor bolts. The bottom portions of the anchor steel beams 84 are further provided with steel-beam traveling devices 85 adapted to the first track 5, and the steel-beam traveling devices 85 include jacking-up upper steel plates 851 fixed on the bottom portions of the anchor steel beams 84. The lower end surfaces of the jacking-up upper steel plates 851 are connected to jacking-up lower steel plates 852 through a plurality of evenly distributed traveling jacking-up cylinders 853, and the four corners at the lower end surfaces of the jacking-up lower steel plates 852 are provided with the reaction force frame pulley groups 854 adapted to the first tracks 5, respectively. A
plurality of position-limiting tension bolts 855 are further threadedly connected between the jacking-up upper steel plates 851 and the jacking-up lower steel plates 852.
[ 0057] A self-balancing steel beam 4 is fixedly connected between the two anchor steel beams 84, and a room-temperature reinforcing beam 2 is fixed on the high-temperature self-sensing Date Recue/Date Received 2022-11-08 loading beam 1, and the self-balancing steel beam 4 is detachably connected to a ground trench through anchor bolts.
[ 0058] The high-temperature self-sensing loading beam 1 is made of high-strength steel and the cross section of the high-temperature self-sensing loading beam 1 is a box-shaped section, and the interior of the high-temperature self-sensing loading beam 1 is provided with a multi-stage water cavity for cooling.
[ 0059] The both ends of the high-temperature self-sensing loading beam 1 are symmetrically provided with two guiding cones to facilitate the beam to slide into the three-dimensional guiding devices 6. The guiding cones are in a shape of a pyramid, and the outer surface of the high-temperature self-sensing loading beam 1 is further covered with an oxidation-resistant plate made of stainless steel.
[ 0060] The thermal insulation hoods 71 are surrounded by a plurality of heat-insulating steel plates that are connected with one another by bolts. Water-cooling pipes 72 that are threaded and abut the surfaces of the actuators 7 are further arranged inside the thermal insulation hoods 71, and both ends of the water-cooling pipes 72 are in sealed connection with water-cooling water inlet holes 73 and water-cooling water outlet holes 74 of the actuator 7, respectively.
[ 0061] A plurality of temperature sensors 3 are arranged on surfaces of the high-temperature self-sensing loading beam 1 and the steel uprights 81, and the temperature sensors 3 are high-intensity magnetic temperature sensors and provided with over-temperature automatic alarm units. The temperature sensors 3 are connected with a console through conductive wires.
[ 0062] Both ends of the high-temperature self-sensing loading beam 1 are further provided with a horizontal position-limiting locking device configured to lock the three-dimensional guiding devices 6. The horizontal position-limiting locking device includes two L-shaped position-limiting plates respectively arranged on both sides of the three-dimensional guiding devices 6. The lower bottom plates of the L-shaped position-limiting plates are fixed on the high-temperature self-sensing loading beam 1 by bolts, and the side plates of the two L-shaped position-limiting plates are pressed against the three-dimensional guiding devices 6 and fixedly connected together by high-strength bolts.
[ 0063] The lifting furnace system includes a furnace body mounting rack, inside which a Date Recue/Date Received 2022-11-08 combined furnace body 14 is hung, being capable of traveling on a second track

10. Two moving beams 9 having moving directions perpendicular to a direction of the second track 10 are slidably connected to an upper end of the furnace body mounting rack. The cross sections of the moving beams 9 are box-shaped sections. The lower end of the furnace-body mounting -- frame is provided with traveling devices 18 configured to control the furnace-body mounting frame to walk, and the four installation columns 19 of the furnace-body mounting frame are respectively provided with a hydraulic fixedly supporting leg 20. Movable mobile hoist engines 22 are arranged at lower end surfaces of the moving beams 9, and operating devices 16 are hung on bottom portions of the mobile hoist engines 22. A lifting device configured to control raising -- and lowering the combined furnace body 14 is further slidably connected at both ends of the moving beams 9.
[ 0064] The lifting device includes traction machines 23 respectively fixed at both ends of moving beams 9. One ends of chains on the traction machines 23 are connected to the combined furnace body 14, and the other ends of the chains are connected to furnace-body counterweight -- devices 13. The raising and lowering of the combined furnace body 14 realizes force balance and self-locking through the furnace-body counterweight devices 13.
[ 0065] Both the mobile hoist engines and the lifting devices are capable of sliding along the upper end surfaces of the flanges on both sides of the bottom portions of the moving beams 9.
The combined furnace body 14 is in a shape of a square cylinder and is assembled by a plurality -- of furnace body modules. The lengths of the furnace body modules take 500mm as the modulus, and furnace body modules in different numbers can be assembled into a plurality of combined furnace bodies 14 with different dimensions.
[ 0066] The furnace body modules include outer layers 152 of the furnace body modules and inner layers 151 of the furnace body modules. The outer layers 152 of the furnace body modules -- are steel structure frames, and the inner layers 151 of the furnace body modules are lattices of Austenitic chromium-nickel heat-resistant steel. Inside inner grids of the inner layers of the furnace body modules are inlaid refractory fiber cottons. The upper ends of the outer layers 152 of the furnace body modules at the four corners of the combined furnace body 14 are provided with lugs 153 of furnace body. The two furnace body modules on the same side are connected -- together by bolts. Both sides of the outer layers 152 of the furnace body modules are provided Date Recue/Date Received 2022-11-08 with connection holes 155 for bolts to pass through and assembly apertures 156 that facilitate tightly screwing the nuts at both ends of the bolts. The assembly apertures 156 are provided with assembly covers 157 that can be closed. Each comer of the combined furnace body 14 has a corner connection plate 154 arranged on the side of a furnace body module, and the comer connection plate 154 is connected to the adjacent furnace body module through bolts.
[ 0067] A combustion device is arranged in the combined furnace body 14. The combustion device includes a self-suction-type combustion module and a combustion-booster-type combustion module. The self-suction-type combustion module and the combustion-booster-type combustion module are in communication with an external gas and an air inlet through a pipeline.
[ 0068] The combustion-booster-type combustion module includes a plurality of combustion-booster-type combustion units. The minimum height of combustion-booster-type combustion units is 400 mm. The combustion-booster-type combustion unit includes a combustion-booster-type combustion rack 241 provided with retractable rollers 242. A plurality of burner nozzles 243 are fixed on an upper end plate of the combustion-booster-type combustion rack 24L A gas inlet and an air inlet are arranged at a lower end of the burner nozzles 243.
The gas inlet is in communication with an external gas through a gas pipe 244, and the air inlet is in communication with an external blower through an air inlet pipe 245_ [ 0069] The self-suction-type combustion module include a plurality of self-suction-type combustion units having heights lower than the heights of the furnace body modules. The self-suction-type combustion unit includes a self-suction-type combustion rack 246 provided with retractable rollers 242. A plurality of combustion pipes 248 that are evenly distributed side-by-side are arranged at an upper end of the self-suction-type combustion rack 246. A plurality of evenly distributed combustion holes 249 are arranged on the combustion pipes.
A self-suction-type gas pipe 247 is connected to both ends of the combustion pipes 248, and the self-suction-type gas pipe 247 is in communication with the external gas.
[ 0070] The upper end of the furnace-body mounting frame is provided with two wide beams

11, and two long beams 12 having length directions consistent with the direction of the second rack 10. The upper end surface of the wide beam 11 is provided with an upper track for the sliding of the ends of the moving beams 9, and both ends of the moving beams 9 are provided Date Recue/Date Received 2022-11-08 with moving-beam traveling devices adapted to the upper track. The two wide beams 11 are respectively provided with a stationary hoist 21 configured to hoist heavy objects.
[ 0071] The traveling device 18 includes a traveling motor fixed on the bottom beam 17 at the lower end of the furnace-body mounting frame. The bottom portion of the bottom beam 17 is provided with rollers adapted to the second track 10, and the output end of the traveling motor is provided with a driving wheel. The driving wheel is driven by a driving chain and a roller chain. The cross section of the bottom beam 17 is in a box shape, and the bottom beam 17 is detachably connected to the ground trench by anchor bolts.
[ 0072] The moving-beam traveling device includes a second traveling motor fixed on the end of the moving beam 9. The output shaft of the second traveling motor is fixed with a second driving wheel. The end of the moving beam 9 is further provided with second rollers adopted to the upper track, and the second driving wheel is driven through a second driving chain and a second roller chain.
[ 0073] The combined furnace body 14 is provided with furnace body inspection ports and furnace body viewing windows. The surface of the furnace-body mounting frame is coated with anti-oxidation paints, and the outer surface of the combustion device is covered with a refractory fiber cotton.
[ 0074] The gas pipe 244 and the self-suction-type gas pipe 247 in the combustion device are both provided with a gas-control sub valve 256. a gas main valve 251, the gas main pipeline 254 connected to the gas end is provided with a pressure gauge 252, a flow meter 253, and a gas-control main valve 255 in sequence. The gas-control sub valve 256, the gas main valve 251, the pressure gauge 252, the flow meter 253 and the gas-control main valve 255 are all electrically connected with the external gas control panel 257. The gas-control main valve 255 is a V-notch ball valve. The valve positioning of the gas-control main valve 255 is controlled by the analog output signals of the control system of the monitor. A positive displacement flow meter is adopted as the flow meter 253, and the flow meter 253 includes a frequency pulse counter, two thermistor temperature probes, and two pressure sensors. One thermistor temperature probe and one pressure sensor are arranged at the inlet and outlet of the flow meter 253 respectively.
Date Recue/Date Received 2022-11-08 [ 0075] The fume collecting hood system includes a steel structure frame capable of traveling on a third track 47. A support platform 37 is fixed on a side of the steel structure frame. A
conical fume collecting hood 28 capable of sliding upwards and downwards and a hoisting system capable of controlling the conical fume collecting hood to move upwards and downwards are arranged inside the steel structure frame. The conical fume collecting hood 28 is in a quadrangular pyramid shape with openings at the upper and lower ends, the material of which is selected from stainless steel, and the inner surface of the conical fume collecting hood 28 is laid with a refractory fiber cotton.
[ 0076] The four uprights 36 of the steel structure frame are slidably connected to the four comer ends at the lower end of the conical fume collecting hood 28, respectively, and the uprights 36 are provided with sliding channels for embedding the comer ends of the conical fume collecting hood 28.
[ 0077] An opening at an upper end of the conical fume collecting hood 28 is in communication with a fume inlet of a fume collecting pipeline 26 through a telescopic flexible telescopic joint 30. A fume outlet of the fume collecting pipeline 26 is connected to a fume outlet pipe 41 through the flexible telescopic joint 30. The flexible telescopic joint 30 is made of high temperature-resistant fireproof cloth. An automatic telescopic docking device capable of controlling a protruding amplitude of the fume outlet pipe 41 is arranged on the support platform 37. The upper end of the steel structure frame is further fixed with a maintenance platform 35. The area of the maintenance platform 35 is not less than 50% of the top area of the steel structure frame. A protection railing 32 is further arranged on the maintenance platform 35.
[ 0078] A loading platform 34 capable of being moved to the opening of the conical fume collecting hood is arranged on the maintenance platform 35 to realize rapid replacement of the flexible telescopic joint. A high temperature-resistant lifting screen 29 capable of being stretched and contracted is further fixed on a lower end surface at a circumferential edge of the conical fume collecting hood 28. The bottom portion of the steel structure frame is provided with a plurality of driving mechanisms 31 capable of controlling the steel structure frame to travel. The bottom portion of the steel structure frame is provided with two bottom beams 33 co-directionally arranged with the third track 47. The driving mechanisms 31 are arranged on Date Recue/Date Received 2022-11-08 the bottom beams 33, and the structures of the driving mechanisms 31 are the same as those of the traveling devices 18.
[ 0079] The high temperature-resistant lifting screen 29 is a folded structure in an integrated seamless design, and the material of the high temperature-resistant lifting screen 29 is a coated ceramic fiber fireproof cloth with a temperature resistance of 3500 C, and the high temperature-resistant lifting screen 29 is connected with a skirt telescopic lifting mechanism placed on the top portion of the steel structure frame through the steel wire soft bars arranged inside.
[ 0080] The hoisting system includes four hoisting motors 27 respectively fixed on the four corners of the steel structure frame. The lower end surface of the maintenance platform 35 is provided with four fixed pulleys corresponding to the hoisting motors 27 one-to-one, respectively. The output ends of the hoisting motors 27 are connected to hoisting ropes, and the hoisting ropes are fixedly connected to the conical fume collecting hood 28 after passing through the corresponding fixed pulley.
[ 0081] The automatic telescopic docking device includes a supporting carriage 39 capable of moving on the support platform 37. A steel plate 40 is arranged on the supporting carriage 39, and the steel plate 40 is fixedly connected to the fume outlet pipe 41 and has a function of supporting the fume outlet pipe 41. A horizontal electro-hydraulic pushing rod 38 is further arranged on the support platform 37, and the protruding end of the horizontal electro-hydraulic pushing rod 38 is fixed to the steel plate 40.
[ 0082] During the experiment, it is necessary to combine the external earthquake simulation vibrating table sub-system. The vibrating table includes a table top 42, mechanical guiding rails 43, self-aligning bearings 44, vibration-table actuators 45, vibration-table reaction frames 46 and a high-pressure pump group. The table top 42 is a grid box-type steel welded structure. A
plurality of installation holes are arranged on the table top 42. Four groups of self-aligning bearings 44 are arranged at the four corners of the bottom portion of the table top 42, and the four groups of self-aligning bearings 44 are slidably connected with the four sets of mechanical guiding rails 43, respectively, the side surfaces of the table top 42 are connected with two vibration-table actuators 45 having length directions consistent with the direction of the first track 5, and the other sides of the vibration-table actuators 45 are placed inside the actuator Date Recue/Date Received 2022-11-08 reaction frames 46. The vibration-table actuators 45 are in sealed connection with the external high-pressure pump group through hydraulic pipes.
[ 0083] Provided in this embodiment is a method for implementing a cascaded high-energy earthquake-fire coupled test system, which takes the "strong-vibration-force-fire" coupling test for an entire structure as an example, which specifically includes the following steps.
[ 0084] 1) The test model is hoisted to the upper portion of the table top 42 and connected to the table top 42 by bolts. A plurality of furnace body modules are hoisted inside the furnace-body mounting frame according to the dimension of the test model, and the plurality of furnace body modules are assembled to form three surfaces of the combined furnace body.
[ 0085] 2) An earthquake simulation test is performed on the test model, and the earthquake damage of the test model is monitored in real time through the console.
[ 0086] 3) After the earthquake simulation test is completed, the combustion device is installed inside the test model.
[ 0087] 4) After the installation of the combustion device is completed, the traveling devices 18 of the furnace-body mounting frame are driven to move the combined furnace body to the surrounding of the test model, the plurality of furnace body modules are hoisted to complete the assembly of the last surface of the combined furnace body. The lifting devices are utilized to raise the combined furnace body to a predetermined position, and the furnace-body counterweight devices are assembled to realize the force balance and self-locking.
[ 0088] 5) The driving mechanisms 31 of the fume collecting hood system are driven to move the conical fume collecting hood 28 above the test model. The pipeline of the combustion device is installed, and the hydraulic fixedly supporting legs 20 are driven.
[ 0089] 6) After the supporting ends of the hydraulic fixedly supporting legs 20 are reliably connected to the ground. The horizontal electro-hydraulic pushing rod 38 is driven to close the system flue, and the high temperature-resistant lifting screen 29 is electrically lowered to the specified position.
[ 0090] 7) A fire simulation test is performed on the test model, and the fire damage of the test Date Recue/Date Received 2022-11-08 model is monitored in real time through the console.
[ 0091] Further provided in this embodiment is a method for implementing a cascaded high-energy earthquake-fire coupled test system, which takes the "quasi-static-force-fire" coupling test of components as an example, which specifically includes the following steps.
-- [ 0092] 1) The sample is hoisted into the self-balanced loading system. The anchor bolts of the anchor steel beams 84 are loosened. Each of the traveling jacking-up cylinders 853 is raised synchronously. After the traveling jacking-up cylinders 853 are raised to predetermined positions, the frame pulley groups 854 of the steel-beam traveling devices 85 move along the first track 5, and the two mobile reaction force frames 8 are moved to appropriate positions -- according to the dimension of the sample.
[ 0093] 2) The connections between the frame main beams 83 and the H-shaped steel uprights 81 are loosened. The upright lifting cylinders 86 are driven to adjust the high-temperature self-sensing loading beam 1 to a specified height. The actuators 7 are driven to enable the high-temperature self-sensing loading beam 1 to fit the sample, and the frame -- main beams 83 are installed back to the H-shaped steel uprights 81.
[ 0094] 3) The furnace-body mounting frame is moved to the sample. A plurality of furnace body modules are hoisted to complete the assembly of the combined furnace body 14, and the combustion device is placed inside the combined furnace body 14.
[ 0095] 4) The conical fume collecting hood 28 is moved to the top of the test model. The -- pipeline of the combustion device is installed, and the hydraulic fixedly supporting legs 20 are driven.
[ 0096] 5) After the supporting ends of the hydraulic fixedly supporting legs 20 are reliably connected to the ground. The horizontal electro-hydraulic pushing rod 38 is driven to close the system flue. After the system flue is closed, the high temperature-resistant lifting screen 29 is -- electrically lowered to a specified position.
[ 0097] 6) The actuators 7 are driven to enable the high-temperature self-sensing loading beam 1 to load the sample vertically, and the damage of the sample is monitored in real time through the console.

Date recue/Date received 2023-03-10 [ 0098] 7) After the vertical loading value reaches a specified value, a horizontal actuator outside the system is utilized to load the sample horizontally and periodically, while the combustion device is started to perform the fire simulation test, and the damage of the sample is monitored in real time through the console.
[ 0099] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, provided that these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Date Recue/Date Received 2022-11-08

Claims

What is claimed is:

1. A cascaded high-energy earthquake-fire coupled test system, comprising:
a self-balanced loading system;
a lifting furnace system; and a fume collecting hood system transversely arranged on an upper end of the lifting furnace system and capable of collecting fume;
wherein:
the self-balanced loading system includes two mobile reaction force frames configured to travel on a first track, and a high-temperature self-sensing loading beam transversely arranged on top portions of the two mobile reaction force frames, wherein:
each of the mobile reaction force frames comprises a frame main body having a top portion, an anchor steel beam and a three-dimensional guiding device arranged on the top portion of the frame main body, wherein the frame main body is fixed on the anchor steel beam, and the frame main body further comprises two steel uprights connected by a frame secondary beam, and a frame main beam adjustable for fixed positions;
the three-dimensional guiding device being arranged between the two steel uprights and configured to slide upwards and downwards along the frame main body;
an actuator is fixed on an upper end surface of the frame main beam, a thermal insulation hood is arranged on a periphery of the actuator, and a top portion of the actuator is connected to a bottom portion of the three-dimensional guiding device by spherical joints, an upright lifting cylinder is fixed on the anchor steel beam, and a top portion of a protruding end of the upright lifting cylinder is fixed on a lower end surface of the frame main beam; and Date recue/Date received 2023-03-10 the three-dimensional guiding device comprises a rectangular loading frame, a connecting rack configured to be connected with the actuator is arranged at a bottom portion of the rectangular loading frame, a left side plate and a right side plate of the rectangular loading frame are each movably connected to a mobile perpendicular plate, a plurality of evenly distributed perpendicular-plate rollers are arranged on the mobile perpendicular plate, a plurality of evenly distributed flat-plate rollers are arranged on an upper side plate and a lower side plate of the rectangular loading frame, respectively, rolling directions of the plurality of evenly distributed perpendicular-plate rollers and the plurality of evenly distributed flat-plate rollers are consistent with a length direction of the high-temperature self-sensing loading beam, and a left side and a right side of the three-dimensional guiding device are each respectively connected with a three-sided roller group to facilitate an installation of the three-dimensional guiding device inside of the each mobile reaction force frame, wherein the three-sided roller groups comprises a first roller positioned along the length direction of the high-temperature self-sensing loading beam and a pair of second rollers in parallel to each other and positioned perpendicular to the length direction of the high-temperature self-sensing loading beam, the first roller is connected between the pair of second rollers, and the first roller, and the pair of the second rollers are configured to be embedded inside of the each mobile reaction force frame and rotating perpendicularly; and a plurality of water cavities for cooling are arranged inside of the high-temperature self-sensing loading beam, and the high-temperature self-sensing loading beam is embedded in the three-dimensional guiding device to support and limit the hi gh-temperature self-sensing loading beam; and the lifting furnace system comprises a furnace-body mounting rack configured to travel on a second track and comprising a combined furnace body, wherein:
two moving beams each having a moving direction perpendicular to a direction of the second track are slidably connected to an upper end of the furnace-body mounting rack, a movable mobile hoist engine is arranged at a lower end surface of each of the Date recue/Date received 2023-03-10 two moving beams, and an operating device is hung on a bottom portion of each of the two mobile hoist engines; a lifting device configured to control raising and lowering of the combined fumace body is slidably connected to both ends of the moving beam; and the combined furnace body is in a shape of a square cylinder holed from top to -- bottom and is assembled by a plurality of furnace body modules, and a combustion device is arranged inside of the combined furnace body.

2. The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein the fume collecting hood system comprises a steel structure frame configured to travel -- on a third track;
a support platform is fixed on a side of the steel structure frame;
a conical fume collecting hood configured to slide upwards and downwards; and a hoisting system configured to control the conical fume collecting hood to move upwards and downwards is arranged inside of the steel structure frame;
wherein an opening at an upper end of the conical fume collecting hood is connected to a fume inlet of a fume collecting pipeline through a first flexible telescopic joint, a fume outlet of the fume collecting pipeline is connected to a fume outlet pipe through a second flexible telescopic joint, an automatic telescopic docking device configured to control a protruding amplitude of the fume outlet pipe is arranged on the support platform, and a -- stretchable and contractible high temperature-resistant lifting screen is fixed on a lower end surface at circumferential edges of the conical fume collecting hood.

3. The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein the combustion device comprises a combustion-booster-type combustion module, and the -- combustion-booster-type combustion module comprises a plurality of combustion-booster-type combustion units, wherein each of the combustion-booster-type combustion units comprises a combustion-booster-type combustion rack provided with retractable rollers, a plurality of burner nozzles are fixed on an upper end plate of the combustion-booster-type combustion rack, Date recue/Date received 2023-03-10 a gas inlet and an air inlet are arranged at a lower end of each of the burner nozzles, the gas inlet is in communication with an external gas through a gas pipe, and the air inlet is in communication with an external blower through an air inlet pipe.

-- 4. The cascaded high-energy earthquake-fire coupled test system according to claim 3, wherein the combustion device comprises a self-suction-type combustion module, and the self-suction-type combustion module comprises a plurality of self-suction-type combustion units, wherein each of the self-suction-type combustion units comprises a self-suction-type combustion rack provided with retractable rollers, a plurality of evenly distributed combustion pipes are arranged -- at an upper end of the self-suction-type combustion rack, a plurality of evenly distributed combustion holes are arranged on each of the combustion pipes, a self-suction-type gas pipe is connected to both ends of each of the combustion pipes, and the self-suction-type gas pipe is in communication with the external gas.

-- 5. The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein each of the furnace body modules comprises an outer layer and an inner layer, wherein the outer layer is of a steel structure frame, the inner layer is of lattices of Austenitic chromium-nickel heat-resistant steel, and an inside of inner grids of the inner layer is of inlaid refractory fiber cottons.

6. The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein the lifting device comprises a plurality of traction machines each fixed at one end of each of the moving beams and each of the traction machines comprising a chain, wherein the combined furnace body is connected to a first end of the chain, and a fumace-body counterweight device -- is connected to a second end of the chain opposite to the first end, and a raising and lowering of the combined furnace body realizes force balance and self-locking through the furnace-body counterweight device.

7.The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein Date recue/Date received 2023-03-10 the thermal insulation hood is surrounded by a plurality of heat-insulating steel plates that are connected with one another by bolts, a threaded water-cooling pipe abutting surfaces of the actuator is arranged inside of the thermal insulation hood, and both ends of the water-cooling pipe arc in sealed connection with a water-cooling water inlet hole and a water-cooling water outlet hole of the actuator, respectively.

8.The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein a self-balancing steel beam is fixedly connected between the anchor steel beams, and a room-temperature reinforcing beam is fixed on the high-temperature self-sensing loading beam, and the self-balancing steel beam is detachably connected to a ground trench through anchor bolts.

9. The cascaded high-energy earthquake-fire coupled test system according to claim 1, wherein a plurality of temperature sensors are arranged on surfaces of the high-temperature self-sensing loading beam and the two steel uprights, the plurality of temperature sensors are high-intensity magnetic temperature sensors and provided with over-temperature automatic alarm units, and the temperature sensors are connected with a console through conductive wires.
Date recue/Date received 2023-03-10