Structure for inhibiting tunnel inverted arch floor heave damage

Abstract

The invention belongs to the technical field of tunnel reinforcement, and particularly relates to a structure for inhibiting tunnel inverted arch floor heave damage, which comprises a side wall connecting end, a telescopic deploying mechanism, a support reinforcing mechanism, a lower wall connecting end and a pressure monitoring control mechanism, the number of the side wall connecting ends is two. The two side wall connecting ends are symmetrically installed on the opposite sides of the side walls on the two sides of the tunnel. One end of the telescopic deploying mechanism is hinged to the side wall connecting end; the telescopic deploying mechanism has a telescopic state and a non-telescopic state; the other end of the telescopic deploying mechanism is hinged to the supporting and reinforcing mechanism. The left end and the right end of the upper side of the supporting and reinforcing mechanism are connected with the side wall connecting end through the telescopic deploying mechanism. According to the device, when the side wall is squeezed into the inner side of the tunnel, the telescopic deploying mechanism is controlled to stretch out and draw back, so that the pressure transmitted to the prefabricated inverted arch by squeezing the side wall is counteracted, and the situation that the prefabricated inverted arch is damaged due to the pressure generated by squeezing the side wall is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel reinforcement, and specifically to a structure for suppressing the bottom heave disease of the tunnel invert. Background Art

[0002] The bottom heave disease of the tunnel invert refers to the uplift deformation of the invert surrounding rock in tunnel engineering due to stress adjustment or environmental factors, resulting in diseases such as cracking of the invert filling layer and upward arching of the track slab, affecting the tunnel structure, driving safety and service life. The bottom heave deformation of the invert can be well suppressed by this reinforcement structure.

[0003] Common structures for suppressing the bottom heave deformation of the tunnel invert mainly connect the invert and the side walls through steel structures, and then improve the stiffness of the tunnel invert structure through the high compressive capacity of the side walls to prevent the tunnel invert from squeezing into the tunnel, thereby improving the suppression effect of the bottom heave disease of the tunnel invert. However, when the tunnel side walls squeeze into the tunnel, this structure for suppressing the bottom heave deformation will increase the load on the tunnel invert, and then press the tunnel invert to squeeze out of the tunnel, causing damage to the precast tunnel invert. Therefore, we propose a structure for suppressing the bottom heave disease of the tunnel invert, which is used to selectively maintain the connection between the side walls and the invert to increase the suppression effect of the bottom heave disease of the tunnel invert, or disconnect the connection between the side walls and the invert to avoid the reaction force generated by the side walls from damaging the precast tunnel invert. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure for suppressing the bottom heave disease of the tunnel invert, so as to solve the problem that the steel structure connecting the invert and the side walls will damage the precast tunnel invert due to the reaction force generated when the side walls squeeze into the tunnel in suppressing the bottom heave disease as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A structure for suppressing the bottom heave disease of the tunnel invert, comprising: Side wall connection ends, the number of which is two; the two side wall connection ends are symmetrically installed on the opposite sides of the tunnel side walls on both sides; A telescopic adjustment mechanism, one end of which is hinged to the side wall connection end; and the telescopic adjustment mechanism has two states: being able to telescopic and not being able to telescopic; A support and reinforcement mechanism, the other end of the telescopic adjustment mechanism is hinged to the support and reinforcement mechanism; the left and right ends on the upper side of the support and reinforcement mechanism are both connected to the side wall connection ends through the telescopic adjustment mechanism; A lower wall connection end, which is fixedly connected to the precast tunnel invert of the tunnel, and its upper end is fixedly connected to the support and reinforcement mechanism; the number of the lower wall connection ends is at least three, and the lower wall connection ends are evenly distributed on the lower side of the support and reinforcement mechanism; The pressure monitoring and control mechanism, with a quantity of two, is respectively arranged on the left and right sides above the support and reinforcement mechanism; a detection column is arranged at the monitoring end of the pressure monitoring mechanism, and the other end of the detection column is hinged to the side wall connection end; when both pressure monitoring and control mechanisms detect that the pressure is greater than the safety value, the control telescopic deployment mechanism is controlled to switch to a telescopic state.

[0006] Preferably, the lower wall connection end includes: A connecting column, a load-reducing hole is penetrated and opened in the front side of the precast segmental inverted arch, a connecting hole is penetrated and opened in the lower wall inner cavity of the load-reducing hole, and the connecting column penetrates through the connecting hole; A downward pressing mechanism, which is sleeved on the outer side of the connecting column, and its upper end abuts against the lower side of the precast segmental inverted arch; An upper pressure plate, which is sleeved on the outer side of the connecting column, and its lower end abuts against the lower wall inner cavity of the load-reducing hole.

[0007] Preferably, the downward pressing mechanism includes: An annular plate, which is sleeved on the outer side of the connecting column; A touch plate, one end of which is hinged to the upper side of the annular plate; the annular plate limits the rotation angle of the touch plate on the lower side of the touch plate.

[0008] Preferably, the support and reinforcement mechanism includes: An upper triangular prism, the upper side of which is connected to the side wall connection end through a telescopic deployment mechanism; A lower triangular mechanism, which is arranged in a V shape, and its upper end is connected to the upper triangular prism; A transfer ring, which is arranged at the vertex of the lower triangular mechanism and is connected to the lower wall connection end.

[0009] Preferably, lower connecting plates are arranged on both side walls of the upper triangular prism, and upper connecting plates are arranged at both upper ends of the lower triangular mechanism; the lower connecting plates and the upper connecting plates are fixedly connected by bolts.

[0010] Preferably, the pressure monitoring and control mechanism includes: A substrate, which is fixed on the upper side of the support and reinforcement mechanism; A pressure sensor, which is installed on the outer side of the substrate; the detection end of the pressure sensor is used for monitoring the pressure transmitted by the detection column; A controller, which is electrically connected to the pressure sensor; the controller is used for converting the pressure sensor into an electrical signal, and when both pressure monitoring and control mechanisms detect that the pressure is greater than the safety value, controlling the telescopic deployment mechanism to switch to a telescopic state.

[0011] Preferably, an elastic telescopic column and an extrusion slider are further arranged between the pressure sensor and the detection column; The outer shell of the elastic telescopic column is connected to the detection end of the pressure sensor, and the telescopic end of the elastic telescopic column is connected to the extrusion slider; the lower end of the detection column is connected to the extrusion slider.

[0012] Preferably, the telescopic adjustment mechanism includes: A telescopic sleeve, which is hinged to the connecting end of the side wall, and a guiding groove is provided at the other end of the telescopic sleeve; A telescopic plate, which is hinged to the support and reinforcement mechanism; and the other end of the telescopic plate is inserted into the inner side of the guiding groove; A clamping mechanism, which is installed on the outer side of the telescopic sleeve and extends into the inner side of the guiding groove; used for clamping or loosening the telescopic plate.

[0013] Preferably, the clamping mechanism includes: Two longitudinal outer shells, which are arranged at the upper and lower ends of the outer side of the telescopic sleeve; the longitudinal outer shells are communicated with the guiding groove; Longitudinal clamping plates, which are arranged inside the longitudinal outer shells and are rotatably connected to the longitudinal outer shells; Two transverse outer shells, which are arranged at the left and right ends of the outer side of the telescopic sleeve; the transverse outer shells are communicated with the guiding groove; Transverse clamping plates, which are arranged inside the transverse outer shells and are rotatably connected to the transverse outer shells; A first return disc spring is connected between the rotating shaft of the transverse clamping plate and the inner wall of the transverse outer shell; first anti - detachment teeth are arranged on both the left and right sides of the telescopic plate, and first teeth adapted to the first anti - detachment teeth are arranged on the side of the transverse clamping plate close to the telescopic plate; A second return disc spring is connected between the rotating shaft of the longitudinal clamping plate and the inner wall of the longitudinal outer shell; second anti - detachment teeth are arranged on both the front and back sides of the telescopic plate, and second teeth adapted to the second anti - detachment teeth are arranged on the side of the longitudinal clamping plate close to the telescopic plate; an electromagnet for driving the longitudinal clamping plate away from the telescopic plate is installed inside the longitudinal outer shell, and the electromagnet is electrically connected to the pressure monitoring and control mechanism.

[0014] The anti - detachment directions of the first anti - detachment teeth and the second anti - detachment teeth are opposite.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1) The telescopic adjustment mechanism of the present device has two states: being able to expand and contract and not being able to expand and contract. Then, the pressure monitoring and control mechanism monitors whether the side wall is squeezed in. When the side wall is squeezed into the tunnel, the telescopic adjustment mechanism is controlled to be in the state of being able to expand and contract. At this time, by controlling the telescopic adjustment mechanism to be telescopic, the pressure transmitted by the side wall squeezing in to the precast assembled inverted arch can be offset, thereby avoiding the breakage of the precast assembled inverted arch due to the pressure generated by the side wall squeezing in.

[0016] 2) A side wall connection end, a lower wall connection end, a support and reinforcement mechanism, and a telescopic adjustment mechanism are added between the precast segmental inverted arch and the tunnel side wall of this device. When the side wall of this device is normal, through the combined action of the side wall connection end, the lower wall connection end, the support and reinforcement mechanism, and the telescopic adjustment mechanism, the side wall is connected to the precast segmental inverted arch. Through the high compressive capacity of the side wall, the bottom heave deformation of the precast segmental inverted arch is inhibited; when there is a tendency of the bottom heave of the precast segmental inverted arch to be squeezed and deformed, the reaction force of the side wall applies pressure to the precast segmental inverted arch through the side wall connection end, the telescopic adjustment mechanism, the support and reinforcement mechanism, and the lower wall connection end, inhibiting the bottom heave disease of the precast segmental inverted arch; thereby enhancing the inhibition effect of the bottom heave deformation of the precast segmental inverted arch.

[0017] 3) The anti-detachment directions of the first anti-detachment tooth and the second anti-detachment tooth in this device are opposite. Through anti-detachment in two directions, the telescopic change of the telescopic adjustment mechanism is avoided. When the telescopic adjustment mechanism needs to have telescopic change, the anti-detachment ability in one direction can be released, so that while this device has strong anti-detachment ability, it can also be controlled through simple control ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view schematic diagram after the use of the present invention; Figure 2 is the structural schematic diagram of the present invention; Figure 3 is the structural schematic diagram of the lower wall connection end of the present invention; Figure 4 is the structural schematic diagram of the pressure monitoring and control mechanism of the present invention; Figure 5 is the structural schematic diagram of the telescopic adjustment mechanism of the present invention; Figure 6 is the longitudinal sectional structural schematic diagram of the telescopic adjustment mechanism of the present invention; Figure 7 is the transverse sectional structural schematic diagram of the telescopic adjustment mechanism of the present invention; Figure 8 is the structural schematic diagram of the detection column of the present invention.

[0019] In the figure: 1 side wall, 2 precast segmental inverted arch, 3 road surface, 4 side wall connection end, 5 lower wall connection end, 6 support and reinforcement mechanism, 7 telescopic adjustment mechanism, 8 detection column, 9 pressure monitoring and control mechanism; 51 connecting column, 52 annular plate, 53 contact plate, 54 upper pressure plate, 55 nut, 56 anchor cable, 57 anti-detachment reinforcement; 61 upper connecting plate, 62 lower triangular mechanism, 63 adapter ring, 64 lower connecting plate, 65 upper triangular prism; 71 Telescopic plate, 72 telescopic sleeve, 73 longitudinal housing, 74 transverse housing, 75 transverse clamping plate, 76, 77 longitudinal clamping plates, 78 second reset disc spring, 79 electromagnet; 711 first anti - detachment tooth, 712 second anti - detachment tooth; 81 Connecting sleeve, 82 pressure measuring column, 83 locking bolt; 91 Substrate, 92 pressure sensor, 93 elastic telescopic column, 94 extrusion slider. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0022] Embodiment 1: Please refer to Figure 1-8 , the present invention provides a technical solution: a structure for suppressing the bottom heave disease of the tunnel invert, including: side - wall connection end 4, lower - wall connection end 5, support and reinforcement mechanism 6, telescopic adjustment mechanism 7, detection column 8 and pressure monitoring and control mechanism 9.

[0023] The number of side - wall connection ends 4 is two, and the two side - wall connection ends 4 are symmetrically installed on the opposite sides of the two - side walls 1 of the tunnel; mounting holes are provided on the side - wall connection ends 4. By installing expansion bolts on the side walls 1 and then passing the expansion bolts through the mounting holes, the side - wall connection ends 4 are fixed to the side walls 1 of the tunnel.

[0024] The upper end of the telescopic adjustment mechanism 7 is hinged to the side wall connection end 4, and the lower end of the telescopic adjustment mechanism 7 is hinged to the support and reinforcement mechanism 6. The telescopic adjustment mechanism 7 can be selected to be telescopic or non-telescopic. When the precast segmental invert 2 of the tunnel shows a tendency of floor heave deformation, the telescopic adjustment mechanism 7 is selected to be non-telescopic. At this time, the reaction force on the side wall 1 will be applied to the precast segmental invert 2 through the side wall connection end 4, the telescopic adjustment mechanism 7, the support and reinforcement mechanism 6, and the lower wall connection end 5, so as to inhibit the floor heave deformation of the precast segmental invert 2, and further inhibit the occurrence of floor heave diseases of the precast segmental invert 2. When the side wall 1 of the tunnel squeezes into the tunnel, the telescopic adjustment mechanism 7 is selected to be telescopic. At this time, the contraction of the telescopic adjustment mechanism 7 will offset the pressure generated when the precast segmental invert 2 is squeezed in, and further prevent the side wall 1 from squeezing in and driving the deformation of the precast segmental invert 2; that is, when the side wall 1 squeezes in, it will not cause damage to the precast segmental invert (the part of the precast segmental invert 2 that bears the pressure applied by the lower wall connection end 5).

[0025] Both the left and right ends on the upper side of the support and reinforcement mechanism 6 are connected to the side wall connection end 4 through the telescopic adjustment mechanism 7; the support and reinforcement mechanism 6 is fixed by the side walls 1 on both sides and the telescopic adjustment mechanism 7 together; to prevent the position of the support and reinforcement mechanism 6 from changing.

[0026] The lower wall connection end 5 is fixedly connected to the precast segmental invert 2 of the tunnel, and the upper end of the lower wall connection end 5 is fixedly connected to the support and reinforcement mechanism 6; the lower wall connection end 5 is stabilized by the stability of the shape of the support and reinforcement mechanism 6, and then the precast segmental invert 2 of the tunnel is fixed through the lower wall connection end 5. There are at least three lower wall connection ends 5, and the lower wall connection ends 5 are evenly distributed on the lower side of the support and reinforcement mechanism 6; the upper end of the lower wall connection end 5 points to the center of the arc end of the lower wall of the precast segmental invert 2, so that a triangle can be formed between any two lower wall connection ends 5 and the precast segmental invert 2 (here, the triangle refers to the intersection of the extension lines of the two lower wall connection ends 5, and the intersection of the two lower wall connection ends 5 and the precast segmental invert 2, and the triangle formed by the three intersections), thereby improving the stability of the precast segmental invert 2.

[0027] There are two pressure monitoring and control mechanisms 9, which are respectively arranged on the left and right sides above the support and reinforcement mechanism 6; a detection column 8 is arranged at the monitoring end of the pressure monitoring mechanism 9, and the other end of the detection column 8 is hinged to the side wall connection end 4; when the prefabricated inverted arch 2 shows a tendency of floor heave deformation, through the combined action of the lower wall connection end 5, the support and reinforcement mechanism 6, the telescopic adjustment mechanism 7 and the side wall connection end 4, the floor heave deformation can be inhibited. Therefore, the relative positions of the side wall connection end 4, the telescopic adjustment mechanism 7 and the support and reinforcement mechanism 6 will not change, and at this time, the pressure monitored by the pressure monitoring mechanism 9 will hardly change. Even if there is local floor heave deformation in the prefabricated inverted arch 2, it will push the support and reinforcement mechanism 6 to move to the left or right (when the prefabricated inverted arch 2 has a lesion tendency, the forces on several lower wall connection ends 5 are uneven, so the support and reinforcement mechanism 6 will not move vertically upward; in addition, the combined action of the support and reinforcement mechanism 6, the telescopic adjustment mechanism 7 and the side wall connection end 4 will also prevent the support and reinforcement mechanism 6 from moving vertically upward); when the support and reinforcement mechanism 6 has a tendency to move to the left or right, the pressure monitored by one side of the two pressure monitoring and control mechanisms 9 will increase, and the pressure monitored by the other side will decrease. When the side wall 1 squeezes into the tunnel, the distance between the two side walls 1 shrinks, and both detection columns 8 will exert pressure on the pressure monitoring and control mechanism 9, so that the pressures monitored by the two pressure monitoring and control mechanisms 9 both increase. When the amount of pressure increase on both sides reaches the threshold value (that is, the pressure detected by the monitoring and control mechanism 9 exceeds the safety value, and the threshold value is related to the compressive capacity of the prefabricated inverted arch 2 of the tunnel and the initial pressure detected by the monitoring and control mechanism 9), the pressure monitoring and control mechanism 9 controls the telescopic adjustment mechanism 7 to be in a telescopic state, and the telescopic adjustment mechanism 7 is compressed to generate expansion and contraction, thereby avoiding the deformation of the prefabricated inverted arch of the prefabricated inverted arch 2 forced by the squeezing of the side wall 1. Subsequently, the pressure monitoring and control mechanism 9 controls the telescopic adjustment mechanism 7 to be in a non-telescopic state again, and then uses the pressure detected by the monitoring and control mechanism 9 at this time as the new initial pressure to reset the safety value.

[0028] Embodiment 2: Please refer to Figure 1-3, the present invention provides a technical solution: a structure for suppressing the floor heave disease of the tunnel invert. On the basis of Embodiment 1, the lower wall connection end 5 includes: a connection column 51, a downward pressing mechanism, and an upper pressure plate 54. A load reduction hole is penetrated and opened on the front side of the prefabricated assembled invert 2, and a connection hole is penetrated and opened on the lower wall of the inner cavity of the load reduction hole. The connection column 51 penetrates through the connection hole; the downward pressing mechanism is sleeved on the outer side of the connection column 51, and its upper end abuts against the lower side of the prefabricated assembled invert 2; the upper pressure plate 54 is sleeved on the outer side of the connection column 51, and its lower end abuts against the lower wall of the inner cavity of the load reduction hole of the prefabricated assembled invert 2; threads are provided on the outer side of the connection column 51, and the upper pressure plate 54 and the downward pressing mechanism are fixed to the connection column 51 through a nut 55. The prefabricated assembled invert 2 is clamped by the upper pressure plate 54 and the downward pressing mechanism, and then the lower wall connection end 5 is fixed to the prefabricated assembled invert 2.

[0029] The downward pressing mechanism includes: an annular plate 52 and a touch plate 53. The annular plate 52 is sleeved on the outer side of the connection column 51; one end of the touch plate 53 is hinged to the upper side of the annular plate 52; the annular plate 52 limits the rotation angle of the touch plate 53 on the lower side of the touch plate 53. Before installing the lower wall connection end 5, the touch plate 53 is folded up. When the touch plate 53 completely passes through the connection hole, the lower wall connection end 5 is rotated. Under the action of centrifugal force, the touch plate 53 will unfold, thereby preventing the touch plate 53 from detaching from the connection hole. The downward pressing mechanism can be folded up, so that the connection hole does not need to be opened too large, which can not only reduce the opening difficulty, but also reduce the damage to the prefabricated assembled invert 2.

[0030] A cable 56 is connected to the lower side of the connection column 51. The cable 56 is formed by twisting steel wires or steel strands together; when a connection hole is opened on the prefabricated assembled invert 2, the connection hole penetrates into the bottom surrounding rock to form a pre-embedded hole. When installing the lower wall connection end 5, the cable 56 is buried in the pre-embedded hole. An anti-detachment reinforcement member 57 is arranged on the outer side of the cable 56. The anti-detachment reinforcement member 57 can be made of steel bars or the same structure as the downward pressing mechanism; when the anti-detachment reinforcement member 57 is made of steel bars, a steel bar with a length greater than the diameter of the pre-embedded hole is horizontally inserted through the cable 56, so that the anti-detachment reinforcement member 57 is fixedly connected to the cable 56; when the anti-detachment reinforcement member 57 has the same structure as the downward pressing mechanism, a steel bar with a length slightly smaller than the diameter of the annular plate 52 is first horizontally inserted through the cable 56, and then the anti-detachment reinforcement member 57 is welded to the steel bar inserted through the cable 56, thereby fixing the anti-detachment reinforcement member 57 to the cable 56. After the cable 56 is buried in the pre-embedded hole, the connection column 51 is first rotated to make the anti-detachment reinforcement member 57 and the downward pressing mechanism unfold; by injecting concrete into the connection hole and the pre-embedded hole, the rock layer on the lower side of the prefabricated assembled invert 2 can be integrated with the prefabricated assembled invert 2, increasing the force, and further preventing the occurrence of air pockets between the prefabricated assembled invert 2 and the rock layer.

[0031] Embodiment 3: Please refer to Figure 1-4, the present invention provides a technical solution: a structure for suppressing the floor heave disease of the tunnel invert. On the basis of Embodiment 2, the support and reinforcement mechanism 6 includes: an upper triangular prism 65, a lower triangular mechanism 62, and an adapter ring 63. The upper triangular prism 65 is a triangular prism formed by welding three steel plates. The upper side of the upper triangular prism 65 is connected to the side wall connection end 4 through a telescopic adjustment mechanism 7; the lower triangular mechanism 62 is formed by welding two steel bars and an adapter ring 63. The lower triangular mechanism 62 is set in a V shape, and its upper end is connected to the upper triangular prism 65; the adapter ring 63 is arranged at the vertex of the lower triangular mechanism 62 and is connected to the lower wall connection end 5; the adapter ring 63 is fixed to the lower wall connection end 5 by screwing with a nut and a connecting column 51. When the adapter ring 63 is not fixed with a nut, the adapter ring 63 can slide up and down along the connecting column 51, so as to facilitate the position adjustment of the lower wall connection end 5, and further facilitate the connection and fixation of the lower wall connection end 5 and the support and reinforcement mechanism 6, and the tension of the lower wall connection end 5.

[0032] Lower connecting plates 64 are arranged on both side walls of the upper triangular prism 65, and upper connecting plates 61 are arranged at both upper ends of the lower triangular mechanism 62; waist-shaped holes are formed in the upper connecting plates 61, and round holes and arc-shaped slot holes are formed in the lower connecting plates 64. The lower connecting plates 64 and the upper connecting plates 61 can be fixedly connected by bolts passing through the round holes and the waist-shaped holes, as well as the arc-shaped slot holes and the waist-shaped holes.

[0033] Embodiment 4: Please refer to Figure 4-8 , the present invention provides a technical solution: a structure for suppressing the floor heave disease of the tunnel invert. On the basis of Embodiment 1, the pressure monitoring and control mechanism 9 includes: a substrate 91, a pressure sensor 92, and a controller.

[0034] The substrate 91 is fixed on the upper side of the support and reinforcement mechanism 6; the pressure sensor 9 is installed on the outside of the substrate 91; the detection end of the pressure sensor 92 is used to monitor the pressure transmitted by the detection column 8; The controller (not shown in the figure) is electrically connected to the pressure sensor 92; the controller is used to convert the pressure sensor 92 into an electrical signal, and when both pressure monitoring and control mechanisms 9 detect that the pressure is greater than the safety value, control the telescopic adjustment mechanism 7 to convert into a telescopic state.

[0035] In order to reduce the error, an elastic telescopic column 93 and an extrusion slider 94 are arranged between the pressure sensor 92 and the detection column 8; the shell of the elastic telescopic column 93 is connected to the detection end of the pressure sensor 92, and the elastic telescopic column 93 is composed of a nitrogen spring or other elastic and telescopic structures; the telescopic end of the elastic telescopic column 93 is connected to the extrusion slider 94, a linear guide is installed on the upper side of the support reinforcement mechanism 6, and the extrusion slider 94 is slidably connected to the linear guide; the lower end of the detection column 8 is hinged to the extrusion slider 94. When there is only a movement trend, the deformation of the elastic telescopic column 93 is almost 0, and the pressure sensor 92 can hardly detect the pressure change at this time, thereby reducing the detection error.

[0036] The telescopic adjustment mechanism 7 comprises a telescopic plate 71, a telescopic sleeve 72 and a clamping mechanism.

[0037] The telescopic sleeve 72 is hinged to the side wall connection end 4, and the other end of the telescopic sleeve 72 is provided with a guide groove; the telescopic plate 71 is hinged to the support reinforcement mechanism 6, and the other end of the telescopic plate 71 is slidably inserted into the inner side of the guide groove; the clamping mechanism is installed on the outer side of the telescopic sleeve 72 and extends into the inner side of the guide groove; it is used to clamp or release the telescopic plate 71. When the controller controls the clamping mechanism to release the telescopic plate 71, the telescopic adjustment mechanism 7 can be extended; when the controller controls the clamping mechanism to tighten the telescopic plate 71, the telescopic adjustment mechanism 7 cannot be extended.

[0038] The clamping mechanism includes: a longitudinal shell 73, a transverse shell 74, a transverse clamping plate 75, a No. 1 return coil spring 76, a longitudinal clamping plate 77, a No. 2 return coil spring 78 and an electromagnet 79.

[0039] There are two transverse shells 74, which are respectively arranged at the left and right ends of the outer side of the telescopic sleeve 72; the inner cavity of the transverse shell 74 is connected to the guide groove; the transverse clamping plate 75 is arranged on the inner side of the transverse shell 74 and is rotatably connected to the transverse shell 74; a No. 1 reset coil spring 76 is connected between the rotating shaft of the transverse clamping plate 75 and the inner wall of the transverse shell 74; No. 1 anti-slip teeth 711 are arranged on the left and right sides of the telescopic plate 71, and a No. 1 tooth matched with the No. 1 anti-slip teeth 711 is arranged on the side of the transverse clamping plate 75 close to the telescopic plate 71; under the action of the No. 1 reset coil spring 76, the No. 1 tooth of the transverse clamping plate 75 will mesh with the No. 1 anti-slip teeth 711, and the telescopic plate 71 and the telescopic sleeve 72 can only be shortened but not extended. Both the No. 1 anti-slip teeth 711 and the No. 1 tooth are serrated teeth.

[0040] There are two longitudinal outer shells 73, which are respectively arranged at the upper and lower ends outside the telescopic sleeve 72. The inner cavity of the longitudinal outer shell 73 is communicated with the guide groove. The longitudinal clamping plate 77 is arranged inside the longitudinal outer shell 73 and is rotatably connected to the longitudinal outer shell 73. A second return disc spring 78 is connected between the rotating shaft of the longitudinal clamping plate 77 and the inner wall of the longitudinal outer shell 73. Second anti-disengagement teeth 712 are arranged on both the front and rear sides of the telescopic plate 71. On the side of the longitudinal clamping plate 77 close to the telescopic plate 71, there are second teeth adapted to the second anti-disengagement teeth 712. Under the action of the second return disc spring 78, the second teeth of the longitudinal clamping plate 77 will engage with the second anti-disengagement teeth 712. At this time, the telescopic plate 71 and the telescopic sleeve 72 can only extend and cannot shorten. The second anti-disengagement teeth 712 and the second teeth also both adopt serrated teeth.

[0041] The anti-disengagement directions of the first anti-disengagement teeth 711 and the second anti-disengagement teeth 712 are opposite. Through the cooperation of the second teeth and the second anti-disengagement teeth 712, and the cooperation of the first teeth and the first anti-disengagement teeth 711, the length of the telescopic adjustment mechanism 7 cannot change.

[0042] An electromagnet 79 for driving the longitudinal clamping plate 77 away from the telescopic plate 71 is installed inside the longitudinal outer shell 73. The electromagnet 79 is electrically connected to the pressure monitoring and control mechanism 9. The longitudinal clamping plate 77 is inlaid with a ferromagnetic material on the side close to the electromagnet 79. After the controller controls the electromagnet 79 to be energized, the longitudinal clamping plate 77 receives the suction force and starts to rotate, and the second teeth are disengaged from the second anti-disengagement teeth 712. At this time, the length of the telescopic adjustment mechanism 7 can be changed.

[0043] The detection column 8 includes a connecting sleeve 81, a pressure measuring column 82 and a locking bolt 83. The pressure measuring column 82 is movably inserted inside the connecting sleeve 81. The other end of the pressure measuring column 82 is hinged to the extrusion slider 94. The other end of the connecting sleeve 81 is connected to the side wall connection end 4. After the connection between the connecting sleeve 81 and the pressure measuring column 82 is completed, it can be fixed by the locking bolt 83 or directly welded.

[0044] The precast assembled inverted arch 2 is pre-built, and a strip-shaped groove is opened above it. When installing this device, the support and reinforcement mechanism 6 is installed in the strip-shaped groove, and then a concrete slab is laid in the strip-shaped groove. The concrete slab is located above the support and reinforcement mechanism 6. Subsequently, concrete is poured above the concrete slab to seal the strip-shaped groove. The concrete slab prevents the concrete from covering the telescopic adjustment mechanism 7, the detection column 8 and the pressure monitoring and control mechanism 9 when pouring the concrete.

[0045] Working principle: When installing this device, first demolish the upper road surface 3 and the inverted arch with floor heave disease, and then replace the inverted arch with the floor heave disease with the prefabricated assembled inverted arch 2; then open a connection hole above the prefabricated assembled inverted arch 2, insert the lower wall connection end 5 from the connection hole, and when the contact plate 53 completely passes through the connection hole, rotate the lower wall connection end 5, and the contact plate 53 spreads out under the centrifugal force; then pull up the lower wall connection end 5 so that the contact plate 53 abuts against the lower wall of the prefabricated assembled inverted arch 2, and then sleeved with a pressure plate 54 outside the connection column 51 so that the lower side of the pressure plate 54 abuts against the upper wall of the prefabricated assembled inverted arch 2; then fix the pressure plate 54 through the nut 55; then pour and fix the lower wall connection end 5 and the prefabricated assembled inverted arch 2 with concrete.

[0046] Connect the lower wall connection end 5 with the support and reinforcement mechanism 6, then install the side wall connection end 4 on the side wall 1, connect the telescopic adjustment mechanism 7 with the side wall connection end 4 and the support and reinforcement mechanism 6, and connect the detection column 8 with the side wall connection end 4 and the pressure monitoring and control mechanism 9. Then lay a concrete slab on the strip-shaped groove of the prefabricated assembled inverted arch 2, then pour concrete on the concrete slab, and finally continue to lay the road surface 3 at the upper end of the prefabricated assembled inverted arch 2. During the process of laying the concrete slab, the concrete slab extends out of the strip-shaped groove and reaches the upper side of the side wall connection end 4, preventing the concrete from flooding onto the telescopic adjustment mechanism 7, the detection column 8, and the pressure monitoring and control mechanism 9 when pouring the concrete.

[0047] When the prefabricated assembled inverted arch 2 shows a tendency of floor heave deformation, the prefabricated assembled inverted arch 2 is transmitted to the support and reinforcement mechanism 6 through the lower wall connection end 5, and then transmitted to the side wall 1 through the telescopic adjustment mechanism 7 and the side wall connection end 4, and the floor heave deformation is inhibited by the reaction force of the side wall 1. When the side walls 1 are squeezed in, the distance between the two side walls 1 is reduced, and the pressure applied by the side walls 1 to the pressure monitoring and control mechanism 9 through the detection column 8 increases. At this time, the pressure monitoring and control mechanism 9 controls the electromagnet 79 to be energized, the second tooth disengages from the second anti-disengagement tooth 712, and the length of the telescopic adjustment mechanism 7 can be changed to offset the pressure of the side walls 1, avoiding excessive pressure applied by the side walls 1 to the prefabricated assembled inverted arch 2, and thus protecting the assembled inverted arch of the prefabricated assembled inverted arch 2.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for suppressing tunnel invert floor heave disease, characterized in that: include: There are two side wall connection ends (4); the two side wall connection ends (4) are symmetrically installed on opposite sides of the side walls (1) on both sides of the tunnel; A telescopic adjustment mechanism (7), one end of which is hinged to the side wall connection end (4); and the telescopic adjustment mechanism (7) has two states: telescopic and non-telescopic; A supporting reinforcement mechanism (6), wherein the other end of the telescopic adjustment mechanism (7) is hinged to the supporting reinforcement mechanism (6); the left and right ends of the upper side of the supporting reinforcement mechanism (6) are both connected to the side wall connecting end (4) via the telescopic adjustment mechanism (7); A lower wall connection end (5) which is fixedly connected to the prefabricated assembled invert (2) of the tunnel, and an upper end of which is fixedly connected to the support reinforcement mechanism (6); the number of the lower wall connection ends (5) is at least three, and the lower wall connection ends (5) are evenly spaced and distributed on the lower side of the support reinforcement mechanism (6); There are two pressure monitoring control mechanisms (9), and the two pressure monitoring mechanisms (9) are respectively arranged on the left and right sides above the supporting reinforcement mechanism (6); a detection column (8) is arranged at the monitoring end of the pressure monitoring mechanism (9), and the other end of the detection column (8) is hinged to the side wall connecting end (4); when the two pressure monitoring control mechanisms (9) both detect that the pressure is greater than the safety value, the telescopic adjustment mechanism (7) is controlled to be converted into a telescopic state.

2. The structure for suppressing tunnel invert floor heave disease according to claim 1, characterized in that: The lower wall connecting end (5) comprises: A connecting column (51), a load-reducing hole is formed through the front side of the prefabricated assembled inverted arch (2), a connecting hole is formed through the lower wall of the inner cavity of the load-reducing hole, and the connecting column (51) passes through the connecting hole; A downward pressing mechanism, which is sleeved on the outside of the connecting column (51), and whose upper end abuts against the lower side of the prefabricated assembled inverted arch (2); The upper pressure plate (54) is sleeved on the outside of the connecting column (51), and the lower end thereof abuts against the lower wall of the inner cavity of the load-reducing hole.

3. The structure for suppressing tunnel invert floor heave disease according to claim 2, characterized in that: The pressing mechanism comprises: An annular plate (52) sleeved on the outer side of the connecting column (51); A touch plate (53) has one end hinged to the upper side of the annular plate (52); the annular plate (52) limits the rotation angle of the touch plate (53) at the lower side of the touch plate (53).

4. The structure for suppressing tunnel invert floor heave disease according to claim 1, characterized in that: The support and reinforcement mechanism (6) comprises: An upper triangular prism (65), the upper side of which is connected to the side wall connection end (4) via a telescopic adjustment mechanism (7); A lower triangular mechanism (62) is arranged in a V shape, and its upper end is connected to the upper triangular prism (65); An adapter ring (63) is arranged on the vertex of the lower triangular mechanism (62) and is connected to the lower wall connecting end (5).

5. The structure for suppressing tunnel invert floor heave disease according to claim 4, characterized in that: Lower connecting plates (64) are provided on both side walls of the upper triangular prism (65), and upper connecting plates (61) are provided on both upper ends of the lower triangular mechanism (62); the lower connecting plates (64) and the upper connecting plates (61) are fixedly connected by bolts.

6. The structure for suppressing tunnel invert floor heave disease according to claim 1, characterized in that: The pressure monitoring and control mechanism (9) comprises: A base plate (91) fixed to the upper side of the supporting reinforcement mechanism (6); A pressure sensor (92) is mounted on the outside of the substrate (91); a detection end of the pressure sensor (92) is used to monitor the pressure transmitted by the detection column (8); A controller is electrically connected to the pressure sensor (92); the controller is used to convert the pressure sensor (92) into an electrical signal, and when the two pressure monitoring and control mechanisms (9) both detect that the pressure is greater than a safety value, control the telescopic adjustment mechanism (7) to be converted into a telescopic state.

7. The structure for suppressing tunnel invert floor heave disease according to claim 6, characterized in that: An elastic telescopic column (93) and an extrusion slider (94) are also provided between the pressure sensor (92) and the detection column (8); The outer shell of the elastic telescopic column (93) is connected to the detection end of the pressure sensor (92), and the telescopic end of the elastic telescopic column (93) is connected to the extrusion slider (94); the lower end of the detection column (8) is connected to the extrusion slider (94).

8. The structure for suppressing tunnel invert floor heave disease according to claim 1, characterized in that: The telescopic adjustment mechanism (7) comprises: A telescopic sleeve (72) is hingedly connected to the side wall connecting end (4), and a guide groove is formed at the other end of the telescopic sleeve (72); A telescopic plate (71) is hinged to the supporting reinforcement mechanism (6); and the other end of the telescopic plate (71) is inserted into the inner side of the guide groove; A clamping mechanism is installed on the outside of the telescopic sleeve (72) and extends into the inside of the guide groove; and is used to clamp or release the telescopic plate (71).

9. The structure for suppressing tunnel invert floor heave disease according to claim 8, characterized in that: The clamping mechanism comprises: Two longitudinal shells (73) are provided at the upper and lower ends of the outer side of the telescopic sleeve (72); the longitudinal shells (73) are connected to the guide groove; A longitudinal clamping plate (77) disposed on the inner side of the longitudinal housing (73) and rotatably connected to the longitudinal housing (73); Two transverse shells (74) are provided at the left and right ends of the outer side of the telescopic sleeve (72); the transverse shells (74) are connected to the guide groove; A transverse clamping plate (75) disposed on the inner side of the transverse housing (74) and rotatably connected to the transverse housing (74); A No. 1 return coil spring (76) is connected between the rotating shaft of the transverse clamping plate (75) and the inner wall of the transverse housing (74); a No. 1 anti-slipping tooth (711) is provided on both the left and right sides of the telescopic plate (71); and a No. 1 tooth matching the No. 1 anti-slipping tooth (711) is provided on the side of the transverse clamping plate (75) close to the telescopic plate (71); A No. 2 return coil spring (78) is connected between the rotating shaft of the longitudinal clamping plate (77) and the inner wall of the longitudinal housing (73); No. 2 anti-slip teeth (712) are provided on the front and rear sides of the telescopic plate (71); and No. 2 teeth matching the No. 2 anti-slip teeth (712) are provided on the side of the longitudinal clamping plate (77) close to the telescopic plate (71); an electromagnet (79) for driving the longitudinal clamping plate (77) away from the telescopic plate (71) is installed on the inner side of the longitudinal housing (73); the electromagnet (79) is electrically connected to the pressure monitoring control mechanism (9); The first anti-slipping tooth (711) and the second anti-slipping tooth (712) have opposite anti-slipping directions.

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