Tunnel segment thermal coupling test system
By designing a thermal coupling testing system for tunnel segments, a refractory furnace, gas supply, and pressure loading mechanism are used to fix and apply pressure to the curved tunnel segments, solving the problem that traditional equipment cannot test curved tunnel segments and achieving high-precision thermal coupling performance testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZONSKY INSPECTION EQUIP CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional thermo-coupling testing equipment is not suitable for curved tunnel segments and cannot accurately test their thermo-coupling performance.
A thermal coupling testing system for tunnel segments was designed, including a refractory furnace, a gas supply device, an exhaust gas treatment device, and a pressure loading mechanism. The system fixes and applies pressure to the tunnel segments through a lateral force loading device and a vertical force loading device. Combined with multi-stage gas pressure control and temperature rise curves, it achieves stable clamping and accurate testing of arc-shaped tunnel segments.
This improves the accuracy of testing the thermal coupling performance of tunnel segments, ensuring the detection of deformation of tunnel segments under thermal stress and meeting the requirements for tunnel quality and safety.
Smart Images
Figure CN224231501U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building structure testing technology, and in particular to a thermal coupling testing system for tunnel segments. Background Technology
[0002] Shield tunnel segments are the main assembly components in shield tunneling construction, forming the innermost barrier of the tunnel and bearing the responsibility of resisting soil pressure, groundwater pressure, and other special loads. Shield tunnel segments are the permanent lining structure of shield tunnels, and their quality directly affects the overall quality and safety of the tunnel, influencing its waterproofing and durability. Shield tunnel segments are typically produced using high-strength, impermeable concrete to ensure reliable load-bearing capacity and waterproofing. Production mainly utilizes prefabricated segment molds, which are formed after sealed concrete pouring. After shield advancement, the segments are quickly assembled into a ring. In practical applications, the ends of a single segment are subjected not only to compression from adjacent segments but also to soil pressure on the curved, convex side. Traditional thermo-coupling testing equipment is generally only suitable for testing flat building materials, thus only applying pressure to the ends of the test piece and is unsuitable for testing tunnel segments. Therefore, to obtain accurate thermo-coupling test results for tunnel segments, it is necessary to develop a thermo-coupling testing system for tunnel segments to address these issues. Utility Model Content
[0003] The purpose of this invention is to provide a tunnel segment thermal coupling testing system to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A thermal coupling testing system for tunnel segments includes a refractory furnace, a gas supply device, a waste gas treatment device, and a pressure loading mechanism. Both the gas supply device and the waste gas treatment device are connected to the refractory furnace. The gas supply device supplies gas to the refractory furnace, and the waste gas treatment device recovers waste gas from the furnace. The refractory furnace has a heat outlet at its upper end. The pressure loading mechanism includes a mounting frame, a lateral force loading device, and a vertical force loading device. The refractory furnace is located below the mounting frame. The lateral force loading device includes a mounting base, a lateral drive assembly, and a lateral clamping assembly. The mounting base is fixed on the mounting frame. The horizontal drive assembly is fixed on the mounting base with its power output end facing the refractory furnace. The horizontal clamping assembly is fixed on the power output end of the horizontal drive assembly and corresponds to the heat outlet. Two sets of horizontal force loading devices are symmetrically arranged on the left and right sides of the refractory furnace. The vertical force loading device includes a mounting top plate, a vertical drive assembly, and a vertical clamping assembly. The mounting top plate is fixed on the mounting frame. The vertical drive assembly is fixed on the mounting top plate with its power output end facing downward. The vertical clamping assembly is fixed on the power output end of the vertical drive assembly and corresponds to the area above the heat outlet.
[0006] Further description of the present invention: The transverse clamping assembly includes a guide rail, an L-shaped frame, a hinge plate, a push plate, and a baffle. The guide rail is fixed above the mounting base. The vertical part of the L-shaped frame is fixed to the power output end of the transverse drive assembly. The transverse part of the L-shaped frame is slidably connected to the guide rail. The hinge plate is fixed on the transverse and vertical parts of the L-shaped frame. The outer side of the push plate is rotatably mounted on the hinge plate. Two sets of baffles are provided and fixed on the upper and lower sides of the inner side of the push plate, respectively.
[0007] Further description of the present invention: The transverse clamping assembly also includes a first pressure sensor, and the vertical part of the L-shaped frame is fixed to the power output end of the transverse drive assembly through the first pressure sensor.
[0008] Further description of the present invention: The vertical clamping assembly includes a hinge seat, a support frame, an adjusting slider, and a pressure rod. The hinge seat is fixed to the power output end of the vertical drive assembly. The upper end of the support frame is rotatably mounted on the lower end of the hinge seat. The adjusting slider is fixed to the lower end of the support frame and its position is adjustable in the left and right directions. The pressure rod is fixed to the lower end of the adjusting slider. A set of adjusting sliders and pressure rods are provided on each of the left and right sides of the support frame.
[0009] Further description of the present invention: The vertical clamping assembly also includes a second pressure sensor, and the hinge seat is fixed to the vertical drive assembly by the second pressure sensor.
[0010] Further description of this utility model: The lower end of the support frame is provided with a strip-shaped hole, and the adjusting slider is fixed to the support frame by a screw passing through the strip-shaped hole.
[0011] Further description of this utility model: The pressure rod is cylindrical and its central axis is set along the front-to-back direction.
[0012] The beneficial effects of this utility model are as follows: the gas supply device can provide sufficient fuel for heating the refractory furnace, improve the utilization rate of gas through the gasification furnace, and perform multi-stage gas pressure control to ensure the fullness of combustion. The refractory furnace can achieve various heating curves to heat the tunnel segment to be tested. The exhaust gas treatment device treats the exhaust gas generated by combustion, achieving desulfurization and denitrification functions. During the test, the tunnel segment is fixed and a certain pressure is applied through the lateral force loading device and the vertical force loading device. Specifically, the convex arc surface of the tunnel segment faces upward and corresponds to the top of the heat outlet. The lateral drive component drives the lateral clamping component to clamp and fix the left and right ends of the tunnel segment, and the vertical drive component drives the vertical clamping component to press down on the middle of the tunnel segment. During the heating process, the deformation of the tunnel segment is tested to determine the thermal coupling test results of the tunnel segment. The advantage of this design is that the lateral force loading device and the vertical force loading device can fix the arc-shaped tunnel segment firmly and stably, thereby improving the accuracy of its thermal coupling performance. Attached Figure Description
[0013] Figure 1 This is an overall structural diagram of the present invention;
[0014] Figure 2 This is a structural diagram of the refractory furnace and pressure loading mechanism in this utility model;
[0015] Figure 3 This is a structural diagram of the horizontal force loading device and the vertical force loading device in this utility model;
[0016] Explanation of reference numerals in the attached figures:
[0017] 1. Refractory furnace; 11. Heat outlet; 2. Gas supply device; 3. Waste gas treatment device; 4. Pressure loading mechanism; 41. Mounting bracket; 42. Lateral force loading device; 421. Mounting base; 422. Lateral drive assembly; 423. Lateral clamping assembly; 4231. Guide rail; 4232. L-shaped frame; 4233. Hinge plate; 4234. Push plate; 4235. Baffle; 4236. First pressure sensor; 43. Vertical force loading device; 431. Mounting top plate; 432. Vertical drive assembly; 433. Vertical clamping assembly; 4331. Hinge seat; 4332. Support frame; 43321. Strip hole; 4333. Adjusting slider; 4334. Pressure rod; 4335. Second pressure sensor. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings:
[0019] like Figures 1 to 3As shown, a tunnel segment thermal coupling testing system includes a refractory furnace 1, a gas supply device 2, an exhaust gas treatment device 3, and a pressure loading mechanism 4. Both the gas supply device 2 and the exhaust gas treatment device 3 are connected to the refractory furnace 1. The gas supply device 2 supplies gas to the refractory furnace 1, and the exhaust gas treatment device 3 recovers exhaust gas from the refractory furnace 1. The upper end of the refractory furnace 1 has a heat outlet 11. The pressure loading mechanism 4 includes a mounting frame 41, a lateral force loading device 42, and a vertical force loading device 43. The refractory furnace 1 corresponds to the lower side of the mounting frame 41. The lateral force loading device 42 includes a mounting base 421, a lateral drive assembly 422, and a lateral clamping assembly 423. The mounting base 421 is fixed... The horizontal drive assembly 422 is fixed on the mounting base 421 with its power output end facing the refractory furnace 1. The horizontal clamping assembly 423 is fixed on the power output end of the horizontal drive assembly 422 and corresponds to the heat outlet 11. Two sets of horizontal force loading devices 42 are symmetrically arranged on the left and right sides of the refractory furnace 1. The vertical force loading device 43 includes a mounting top plate 431, a vertical drive assembly 432 and a vertical clamping assembly 433. The mounting top plate 431 is fixed on the mounting frame 41. The vertical drive assembly 432 is fixed on the mounting top plate 431 with its power output end facing downward. The vertical clamping assembly 433 is fixed on the power output end of the vertical drive assembly 432 and corresponds to the area above the heat outlet 11.
[0020] The gas supply device 2 can provide sufficient fuel for heating the refractory furnace 1, improve the utilization rate of the gas through the gasification furnace, and perform multi-stage gas pressure control to ensure complete combustion. The refractory furnace 1 can achieve various heating curves to heat the tunnel segments to be tested. The exhaust gas treatment device 3 treats the exhaust gas generated by combustion, achieving desulfurization and denitrification functions. During the test, the tunnel segments are fixed and subjected to a certain pressure through the transverse force loading device 42 and the vertical force loading device 43. Specifically, the convex arc surface of the tunnel segment faces upward and... Corresponding to the area above the heat outlet 11, the horizontal drive assembly 422 drives the horizontal clamping assembly 423 to clamp and fix the left and right ends of the tunnel segment, and the vertical drive assembly 432 drives the vertical clamping assembly 433 to press down on the middle of the tunnel segment. During the heating process, the deformation of the tunnel segment is tested to determine the thermal coupling test results of the tunnel segment. The advantage of this design is that the horizontal force loading device 42 and the vertical force loading device 43 can fix the arc-shaped tunnel segment firmly and stably, so as to improve the accuracy of its thermal coupling performance.
[0021] The transverse clamping assembly 423 includes a guide rail 4231, an L-shaped frame 4232, a hinge plate 4233, a push plate 4234, and a baffle 4235. The guide rail 4231 is fixed above the mounting base 421. The vertical part of the L-shaped frame 4232 is fixed to the power output end of the transverse drive assembly 422. The transverse part of the L-shaped frame 4232 is slidably connected to the guide rail 4231. The hinge plate 4233 is fixed on the transverse and vertical parts of the L-shaped frame 4232. The outer side of the push plate 4234 is rotatably mounted on the hinge plate 4233. Two sets of baffles 4235 are provided and fixed on the upper and lower sides of the inner side of the push plate 4234, respectively.
[0022] The lateral drive assembly 422 drives the L-shaped frame 4232 to slide on the guide rail 4231, thereby clamping the push plate 4234 onto the end plane of the tunnel segment. The push plate 4234 can rotate on the hinge plate 4233, so that the push plate 4234 can be completely in contact with the end plane of the tunnel segment. By setting baffles 4235 corresponding to the arc surfaces on the upper and lower sides of the tunnel segment, the ends of the tunnel segment are limited, so as to achieve the effect of stably clamping both ends of the tunnel segment.
[0023] The lateral clamping assembly 423 also includes a first pressure sensor 4236. The vertical portion of the L-shaped frame 4232 is fixed to the power output end of the lateral drive assembly 422 via the first pressure sensor 4236. The first pressure sensor 4236 can detect the specific pressure applied to the tunnel segment by the lateral force loading device 42.
[0024] The vertical clamping assembly 433 includes a hinge seat 4331, a support frame 4332, an adjusting slider 4333, and a pressure rod 4334. The hinge seat 4331 is fixed to the power output end of the vertical drive assembly 432. The upper end of the support frame 4332 is rotatably mounted on the lower end of the hinge seat 4331. The adjusting slider 4333 is fixed to the lower end of the support frame 4332 and its position is adjustable in the left and right directions. The pressure rod 4334 is fixed to the lower end of the adjusting slider 4333. A set of adjusting slider 4333 and pressure rod 4334 are provided on each of the left and right sides of the support frame 4332.
[0025] The support frame 4332 can swing back and forth along the hinge seat 4331. When the pressure rod 4334 presses down on the tunnel segment, it can adapt to the arc surface with different inclination angles. The position of the adjusting slider 4333 along the left and right direction on the support frame 4332 can be adjusted to adjust the distance between the two sets of pressure rods 4334 to adapt to the pressing of tunnel segments with different arc radii.
[0026] The vertical clamping assembly 433 also includes a second pressure sensor 4335, and the hinge seat 4331 is fixed to the vertical drive assembly 432 via the second pressure sensor 4335. The second pressure sensor 4335 can detect the specific pressure applied to the tunnel segment by the vertical force loading device 43.
[0027] The lower end of the support frame 4332 is provided with a strip-shaped hole 43321, and the adjusting slider 4333 is fixed to the support frame 4332 by screws passing through the strip-shaped hole 43321. This allows the adjusting slider 4333 to be adjusted in the left and right directions on the support frame 4332.
[0028] The pressure bar 4334 is cylindrical with its central axis positioned along the front-to-back direction. The cylindrical pressure bar 4334 can accommodate tunnel segments with various radii of curvature for compression.
[0029] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A thermal coupling testing system for tunnel segments, characterized in that: The system includes a refractory furnace, a gas supply device, a waste gas treatment device, and a pressure loading mechanism. Both the gas supply device and the waste gas treatment device are connected to the interior of the refractory furnace. The gas supply device supplies gas to the refractory furnace, and the waste gas treatment device recovers waste gas from within the refractory furnace. The refractory furnace has a heat outlet at its upper end. The pressure loading mechanism includes a mounting frame, a lateral force loading device, and a vertical force loading device. The refractory furnace is located below the mounting frame. The lateral force loading device includes a mounting base, a lateral drive assembly, and a lateral clamping assembly. The mounting base is fixed to the mounting frame. The horizontal drive assembly is fixed on the mounting base with its power output end facing the refractory furnace. The horizontal clamping assembly is fixed on the power output end of the horizontal drive assembly and corresponds to the heat outlet. Two sets of horizontal force loading devices are symmetrically arranged on the left and right sides of the refractory furnace. The vertical force loading device includes a mounting top plate, a vertical drive assembly, and a vertical clamping assembly. The mounting top plate is fixed on the mounting frame. The vertical drive assembly is fixed on the mounting top plate with its power output end facing downward. The vertical clamping assembly is fixed on the power output end of the vertical drive assembly and corresponds to the area above the heat outlet.
2. The tunnel segment thermal coupling testing system according to claim 1, characterized in that: The transverse clamping assembly includes a guide rail, an L-shaped frame, a hinge plate, a push plate, and a baffle. The guide rail is fixed above the mounting base. The vertical part of the L-shaped frame is fixed to the power output end of the transverse drive assembly. The transverse part of the L-shaped frame is slidably connected to the guide rail. The hinge plate is fixed on the transverse and vertical parts of the L-shaped frame. The outer side of the push plate is rotatably mounted on the hinge plate. Two sets of baffles are provided and fixed on the upper and lower sides of the inner side of the push plate, respectively.
3. The tunnel segment thermal coupling testing system according to claim 2, characterized in that: The lateral clamping assembly also includes a first pressure sensor, and the vertical part of the L-shaped frame is fixed to the power output end of the lateral drive assembly through the first pressure sensor.
4. The tunnel segment thermal coupling testing system according to claim 1, characterized in that: The vertical clamping assembly includes a hinge seat, a support frame, an adjusting slider, and a pressure rod. The hinge seat is fixed to the power output end of the vertical drive assembly. The upper end of the support frame is rotatably mounted on the lower end of the hinge seat. The adjusting slider is fixed to the lower end of the support frame and its position is adjustable in the left-right direction. The pressure rod is fixed to the lower end of the adjusting slider. A set of the adjusting slider and the pressure rod are provided on each of the left and right sides of the support frame.
5. The tunnel segment thermal coupling testing system according to claim 4, characterized in that: The vertical clamping assembly also includes a second pressure sensor, and the hinge seat is fixed to the vertical drive assembly via the second pressure sensor.
6. The tunnel segment thermal coupling testing system according to claim 4, characterized in that: The lower end of the support frame is provided with a strip-shaped hole, and the adjusting slider is fixed to the support frame by a screw passing through the strip-shaped hole.
7. The tunnel segment thermal coupling testing system according to claim 4, characterized in that: The pressure rod is cylindrical and its central axis is set along the front-to-back direction.