Stable glass fiber reinforced plastic mortar pipe structure and construction method thereof

Abstract

The application relates to a stable glass fiber reinforced plastic sand-encased pipe structure and a construction method thereof, and relates to the technical field of pipe jacking structures. The stable glass fiber reinforced plastic sand-encased pipe structure comprises a plurality of through-load pipe bodies and end connecting devices. The end connecting devices comprise plug-in parts and probe parts, the plug-in parts and the probe parts are arranged at two ends of the length direction of each through-load pipe body, the plug-in part comprises an outwardly extended plug-in pipe and a locking mechanism, the locking mechanism is arranged on the through-load pipe body through the outwardly extended plug-in pipe, the probe part comprises an outwardly extended probe pipe and a limiting edge pipe, the outwardly extended probe pipe and the limiting edge pipe are arranged on the through-load pipe body, the limiting edge pipe is arranged around the outer periphery of the outwardly extended probe pipe, and the length size of the limiting edge pipe is greater than that of the outwardly extended probe pipe. The construction method comprises pushing and end connecting. The application has the effects of improving the connection strength and stability of adjacent through-load pipe bodies after connection, and guaranteeing the application stability of the pipe jacking system after forming.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe jacking structure, and particularly relates to a stable glass fiber reinforced plastic sand sandwich pipe structure and a construction method thereof. BACKGROUND

[0002] The glass fiber reinforced plastic sand sandwich pipe refers to a composite pipe structure formed by taking high-strength glass fiber reinforced plastic as the outer wall of the pipe, taking a mixture of quartz sand and resin as the intermediate layer of the pipe, and taking a high-toughness acid and alkali corrosion-resistant coating as the inner wall of the pipe. In the actual application of the glass fiber reinforced plastic sand sandwich pipe, the glass fiber reinforced plastic sand sandwich pipe is mostly used as a pipe jacking pipe.

[0003] In pipe jacking construction, an operator mostly uses pipe jacking equipment to jacking the pipe into a working pit, so that the pipe is left in the soil according to a set angle or slope. Then, the operator transports away the earthwork in the inner cavity of each pipe, and then uses the pipe jacking equipment to sleeve the adjacent pipes. Finally, the operator penetrates two grout channels on the side wall of the pipe, and the two grout channels are mostly located at the radial ends of the pipe. The operator injects concrete mortar into the gap between the outer side wall of the pipe and the soil through one of the grout channels in the inner cavity of the pipe, until the concrete mortar seeps into the inner cavity of the pipe through the other grout channel. At this time, the concrete mortar is filled between the soil and the outer side wall of the pipe, and after the concrete mortar is solidified and formed, the pipe can be fixed in the soil for application.

[0004] However, in the area with soft geology, the sleeved and connected pipes are prone to loose connection due to geological changes, thereby greatly reducing the connection strength of the adjacent pipes, and even causing the problem of loose connection, which affects the application stability of the entire pipe jacking system. SUMMARY

[0005] In order to improve the problem of low connection strength of adjacent pipes, the present application provides a stable glass fiber reinforced plastic sand sandwich pipe structure and a construction method thereof.

[0006] In a first aspect, the stable glass fiber reinforced plastic sand sandwich pipe structure provided by the present application adopts the following technical scheme:

[0007] The stable glass fiber reinforced plastic sand mortar pipe structure comprises a plurality of through pipes and end connecting devices for connecting adjacent through pipes; the end connecting device comprises a plug-in part and a counter part, and the plug-in part and the counter part are arranged at two ends of each through pipe in the length direction; the plug-in part comprises an outwardly extending plug-in pipe and a locking mechanism, and the locking mechanism is arranged on the through pipe through the outwardly extending plug-in pipe; the counter part comprises an outwardly extending counter pipe and a limiting edge pipe, and the outwardly extending counter pipe and the limiting edge pipe are arranged on the through pipe, the limiting edge pipe surrounds the outer periphery of the outwardly extending counter pipe, and the length of the limiting edge pipe is greater than that of the outwardly extending counter pipe; any one of the through pipes is inserted into the inner cavity of the limiting edge pipe of the adjacent through pipe through the outwardly extending plug-in pipe with the locking mechanism, so that the adjacent through pipes are connected.

[0008] By adopting the above technical scheme, the outwardly extending plug-in pipe of one through pipe is inserted into the inner cavity of the limiting edge pipe of another through pipe until the outwardly extending plug-in pipe and the outwardly extending counter pipe of the two through pipes abut; at this time, the two adjacent through pipes abut in the inner cavity of the limiting edge pipe through the abutting outwardly extending plug-in pipe and outwardly extending counter pipe, which helps to ensure the stability of the butt joint of the two adjacent through pipes; the locking mechanism is positioned between the outwardly extending plug-in pipe and the limiting edge pipe, which ensures the connection strength and stability of the connected two adjacent through pipes and effectively reduces the phenomenon of loose connection or even disconnection of the connected through pipes in soft geological conditions.

[0009] In a specific implementation, the locking mechanism comprises a locking ring, the outwardly extending plug-in pipe is provided with an inner sunken ring groove for mounting the locking ring, and the locking ring is in interference fit between the outwardly extending plug-in pipe and the limiting edge pipe.

[0010] By adopting the above technical scheme, the locking ring is stably mounted on the outer sidewall of the outwardly extending plug-in pipe through the inner sunken ring groove, and the locking ring is tightly pressed between the outwardly extending plug-in pipe and the limiting edge pipe through the compression deformation of the locking ring when the outwardly extending plug-in pipe is inserted into the inner cavity of the limiting edge pipe, thereby effectively reducing the connection gap between the outwardly extending plug-in pipe and the limiting edge pipe and improving the connection strength and stability of the connected adjacent through pipes.

[0011] In a specific implementation, the locking ring is provided with a guide plane, and the guide plane is arranged along the outer periphery of the locking ring.

[0012] By adopting the above technical scheme, the guide plane is used to reduce the contact area when the locking ring abuts against the limiting edge pipe, so that the locking ring is more easily squeezed into the connection gap between the limiting edge pipe and the outwardly extending plug-in pipe, and the convenience of interference fit of the locking ring between the outwardly extending plug-in pipe and the limiting edge pipe is improved.

[0013] In one specific implementation, the terminal connecting device further comprises an inner connecting part, which comprises a pulling mechanism and a fixing mechanism; the fixing mechanism is arranged on the outer extending pipe through the pulling mechanism, and the outer extending pipe is provided with a terminal slot for the fixing mechanism and the pulling mechanism to enter and be positioned.

[0014] By using the above technical solution, the fixing mechanism and the pulling mechanism are inserted into the terminal slot and positioned in the inner cavity of the terminal slot, so that the connection strength and stability of the connected adjacent pipe bodies are further improved, and the phenomenon of loose connection or even disconnection of the connected pipe bodies is effectively reduced.

[0015] In one specific implementation, the pulling mechanism comprises a pulling barrel, a plurality of outer ring plates and a concrete connecting block; all the outer ring plates are arranged on the pulling barrel and are spaced along the length direction of the pulling barrel; the pulling barrel is arranged on the outer extending pipe, the outer extending pipe is provided with a pre-connected channel in communication with the inner cavity of the pulling barrel, and the pipe body is provided with an outer channel in communication with the pre-connected channel; the pulling barrel is further provided with a seepage channel corresponding to each outer ring plate, each outer ring plate is provided with a cohesive groove corresponding to the seepage channel, and the side wall of each outer ring plate is provided with a flow guide channel at the cohesive groove; the concrete connecting block is formed by pouring concrete slurry into the outer channel, the pre-connected channel, the inner cavity of the pulling barrel, the inner cavity of the cohesive groove and the inner cavity of the terminal slot, and is used to connect the outer extending pipe and the outer extending pipe.

[0016] By using the above technical solution, the operator pours concrete slurry into the outer channel through the inner cavity of the pipe body, and waits for the concrete slurry to be solidified and formed, so that the inner cavities of the outer channel, the pre-connected channel, the pulling barrel, the cohesive groove and the terminal slot form a concrete connecting block, the concrete connecting block connects the outer extending pipe, the pulling barrel, the outer extending pipe and the pipe body, and the connection strength of the connected adjacent pipe bodies is greatly improved, and the phenomenon of loose connection or even disconnection of the connected pipe bodies due to soft geology is effectively reduced.

[0017] In one specific implementation, the outer diameter of all the outer ring plates increases or decreases along the length direction of the pulling barrel.

[0018] By adopting the technical scheme, when the concrete continuous block is cured and formed in the part located in the inner cavity of the terminal groove, all the outer abutting ring plates abut against the concrete continuous block at different positions of the pulling cylinder body, so that the mutual pulling force is formed between the connected load-carrying pipe bodies, and the phenomenon that the connected load-carrying pipe bodies are loosened or even separated at the connection position due to geological loosening is effectively reduced; all the outer abutting ring plates increase or decrease along the length direction of the pulling cylinder body to form a variable-diameter trend, so that the pulling forces provided by the outer abutting ring plates at different positions of the pulling cylinder body are different, and then the connection strength of the adjacent load-carrying pipe bodies after connection is further ensured.

[0019] In a specific implementable scheme, the fixed-resisting mechanism comprises an end fixed block, an outer tight ring and a position locking assembly; the end fixed block is arranged at one end of the pulling cylinder body away from the outer expanding abutting pipe, the outer tight ring is arranged on the outer peripheral wall of the end fixed block; the outer tight ring is in interference fit between the end fixed block and the side wall of the terminal groove, and the position locking assembly is used for connecting the outer expanding insertion pipe and the end fixed block.

[0020] By adopting the technical scheme, the end fixed block is in interference fit with the inner side wall of the terminal groove through the outer tight ring, so that the phenomenon that the outer expanding insertion pipe and the outer expanding abutting pipe are loosened after abutting against each other is reduced, and the connection stability of the adjacent load-carrying pipe bodies after connection is ensured; the position locking assembly is used for connecting the outer expanding insertion pipe and the outer expanding abutting pipe, so as to further improve the connection strength and the connection stability of the connected load-carrying pipe bodies.

[0021] In a specific implementable scheme, the position locking assembly comprises a locking screw cylinder and a positioning screw rod; the locking screw cylinder is inserted on the outer expanding insertion pipe, one end of the positioning screw rod is threadedly arranged in the locking screw cylinder, and a preset groove for threadedly connecting the positioning screw rod is arranged on the side wall of the end fixed block.

[0022] By adopting the technical scheme, after the positioning screw rod is threadedly arranged in the locking screw cylinder, the positioning screw rod is screwed in the inner cavity of the preset groove, so that the end fixed block and the outer expanding insertion pipe are fixedly connected as a whole, and the connection strength of the adjacent load-carrying pipe bodies after connection is effectively ensured.

[0023] In a second aspect, the application further provides a construction method of the stable glass fiber reinforced plastic sand mortar pipe structure, and the construction method comprises the following construction steps:

[0024] Pushing and abutting: the load-carrying pipe body to be installed is pushed into the soil, so that the insertion part and the abutting part of the adjacent load-carrying pipe bodies correspond to each other; and the load-carrying pipe body is ready for use;

[0025] End connection: one end of the outer expanding insertion pipe with the locking mechanism is inserted into the inner cavity of the limiting side pipe, so that the outer expanding insertion pipe and the outer expanding abutting pipe abut against each other, the locking mechanism is positioned between the outer expanding abutting pipe and the limiting side pipe, and the two adjacent load-carrying pipe bodies are coaxially connected; a plurality of load-carrying pipe bodies are connected to form a pipe jacking system.

[0026] Through the above technical scheme, the operator can quickly and efficiently connect the adjacent through-carrying pipe bodies, and the connected through-carrying pipe bodies have the advantage of high connection strength.

[0027] In summary, the present application has the following beneficial technical effects:

[0028] 1. The two adjacent through-carrying pipe bodies are connected by the abutting outer extension insertion pipe and the outer extension abutting pipe in the inner cavity of the limiting edge pipe, which helps to ensure the stability of the butt joint of the two adjacent through-carrying pipe bodies; the locking mechanism is positioned between the outer extension insertion pipe and the limiting edge pipe, which ensures the connection strength and stability of the connected adjacent through-carrying pipe bodies, effectively reducing the phenomenon of connection loosening or even disconnection of the connected through-carrying pipe bodies in soft geological conditions.

[0029] 2. The operator injects concrete slurry into the outer communication channel, and after the concrete slurry is solidified and formed, the inner cavities of the outer communication channel, the pre-communication channel, the pull cylinder, the cohesive groove and the terminal groove form a concrete block, which simultaneously connects the outer extension insertion pipe, the pull cylinder, the outer extension abutting pipe and the through-carrying pipe body, thereby greatly improving the connection strength of the connected adjacent through-carrying pipe bodies, effectively reducing the phenomenon of connection loosening or even disconnection of the connected through-carrying pipe bodies due to soft geological conditions. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the stable glass fiber reinforced plastic sand sandwich pipe structure in embodiment 1 of the present application;

[0031] Figure 2 is a vertical direction sectional view schematic diagram of the connection of the adjacent through-carrying pipe bodies by the abutting and exploring part and the insertion part in embodiment 1 of the present application;

[0032] Figure 3 is an enlarged schematic diagram of part A in Figure 2

[0033] Figure 4 is a structural schematic diagram of the stable glass fiber reinforced plastic sand sandwich pipe structure in embodiment 2 of the present application;

[0034] Figure 5 is an enlarged schematic diagram of part B in Figure 4

[0035] Explanation of reference signs:

[0036] ​​1, pipe body; 11, outer communication channel; 2, end connecting device; 3, plug-in part; 31, outer extension pipe; 311, inner sinking ring groove; 312, end connection groove; 32, locking mechanism; 321, locking ring; 322, guiding plane; 4, resistance exploration part; 41, outer extension resistance pipe; 411, pre-communication channel; 42, limiting edge pipe; 5, inner connecting part; 6, counter-pulling mechanism; 61, counter-pulling cylinder; 611, seepage channel; 62, outer resistance ring plate; 621, inner cohesive groove; 622, flow guiding channel; 63, concrete connecting block; 7, resistance fixing mechanism; 71, end fixing block; 711, pre-set groove; 72, outer tightening ring; 73, position locking assembly; 731, locking screw cylinder; 732, positioning screw. DETAILED DESCRIPTION

[0037] The embodiment of the application discloses a stable glass fiber reinforced plastic sand sandwich pipe structure.

[0038] The following will be described in detail with reference to the accompanying drawings Figures 1-5 The application will be further described in detail.

[0039] Embodiment 1

[0040] Referring to Figure 1 , the stable glass fiber reinforced plastic sand sandwich pipe structure comprises a plurality of pipe bodies 1 and an end connecting device 2. In the embodiment, the pipe body 1 can be a pipe made of glass steel, and two adjacent pipe bodies 1 are coaxially connected through the end connecting device 2. After the plurality of pipe bodies 1 are connected, a pipe jacking system is formed.

[0041] Referring to Figure 1 and Figure 2 , the end connecting device 2 comprises a plug-in part 3 and a resistance exploration part 4, and the plug-in part 3 and the resistance exploration part 4 are arranged at two ends of the pipe body 1 in the length direction. When an operator connects two adjacent pipe bodies 1, the plug-in part 3 of one pipe body 1 is connected with the resistance exploration part 4 of the other pipe body 1, so that the two adjacent pipe bodies 1 are coaxially connected.

[0042] Referring to Figure 2 and Figure 3 , the plug-in part 3 comprises an outer extension pipe 31 and a locking mechanism 32, and the outer extension pipe 31 is integrally formed at one end of the pipe body 1 in the length direction, and the central axis of the outer extension pipe 31 is collinear with the central axis of the pipe body 1. In the embodiment, the inner diameter of the outer extension pipe 31 is equal to the inner diameter of the pipe body 1, and the outer diameter of the outer extension pipe 31 is smaller than the outer diameter of the pipe body 1.

[0043] Referring to Figure 2 and Figure 3, the locking mechanism 32 includes a locking ring 321, in this embodiment, the locking ring 321 can be a rubber ring with flexible texture and high static friction coefficient on the outer side wall. The outer peripheral wall of the outer extension cannula 31 is provided with an inner sunken ring groove 311, the inner cavity width size of the inner sunken ring groove 311 is matched with the width size of the locking ring 321. The operator sets the locking ring 321 in the side wall of the inner sunken ring groove 311 by stretching, and then bonds and fixes the locking ring 321 in the side wall of the inner sunken ring groove 311 with glue. At this time, the side wall of the locking ring 321 away from the outer extension cannula 31 is located outside the inner sunken ring groove 311.

[0044] Referring to Figure 2 and Figure 3 , the abutting part 4 includes an outer extension abutting tube 41 and a limiting edge tube 42, the outer extension abutting tube 41 is integrally formed at one end of the through-loading tube body 1 away from the outer extension cannula 31, and the inner diameter size and the outer diameter size of the outer extension abutting tube 41 are the same as those of the outer extension cannula 31. The limiting edge tube 42 is integrally formed at one end of the through-loading tube body 1 away from the outer extension cannula 31, in this embodiment, the limiting edge tube 42 is sleeved outside the outer extension abutting tube 41, the central axis of the limiting edge tube 42 is collinear with the central axis of the through-loading tube body 1, the outer diameter size of the limiting edge tube 42 is the same as the outer diameter size of the through-loading tube body 1, and the length size of the limiting edge tube 42 is greater than the length size of the outer extension abutting tube 41.

[0045] Referring to Figure 2 and Figure 3 , taking the coaxial connection of two adjacent through-loading tube bodies 1 as an example, the operator inserts the outer extension cannula 31 on one of the through-loading tube bodies 1 into the inner cavity of the limiting edge tube 42 on the other through-loading tube body 1 until the end wall of the outer extension cannula 31 on one of the through-loading tube bodies 1 and the end wall of the outer extension abutting tube 41 on the other through-loading tube body 1 face each other. At this time, the locking ring 321 is tightly abutted between the outer extension cannula 31 and the limiting edge tube 42 through its compression deformation, so that the outer extension cannula 31 is tightly abutted in the inner cavity of the limiting edge tube 42, thereby ensuring the connection strength and stability of the two adjacent through-loading tube bodies 1 after connection.

[0046] Referring to Figure 2 and Figure 3 , in order to improve the convenience of abutting the locking ring 321 between the outer extension cannula 31 and the limiting edge tube 42, an inclined guide plane 322 is further provided at one end of the locking ring 321 away from the outer extension cannula 31. The guide plane 322 is used to reduce the contact area when the locking ring 321 abuts against the side wall of the limiting edge tube 42, so that the locking ring 321 is more easily deformed and compressed between the limiting edge tube 42 and the outer extension cannula 31, thereby improving the convenience of inserting and positioning the locking ring 321 and the outer extension cannula 31 together into the inner cavity of the limiting edge tube 42.

[0047] The operation personnel inserts the outer extension insertion pipe 31 of one of the through pipe bodies 1 into the inner cavity of the limiting side pipe 42 of the other through pipe body 1 until the outer extension insertion pipe 31 of one of the through pipe bodies 1 abuts against the outer extension abutting pipe 41 of the other through pipe body 1. At this time, the locking ring 321 is abutted tightly between the outer extension insertion pipe 31 and the limiting side pipe 42 through the compression of the locking ring 321, thereby ensuring the connection strength and stability of the outer extension insertion pipe 31 inserted into the inner cavity of the limiting side pipe 42, and further effectively ensuring the connection strength and stability of the adjacent through pipe bodies 1 after being coaxially connected.

[0048] Embodiment 2

[0049] The difference between the embodiment 2 and the embodiment 1 of the present application is that, referring to Figure 4 , the end connecting device 2 further comprises an inner connecting part 5.

[0050] Referring to Figure 4 and Figure 5 , the inner connecting part 5 is used for fixedly connecting the abutting outer extension insertion pipe 31 and the outer extension abutting pipe 41, thereby further improving the connection strength of the adjacent through pipe bodies 1 after being connected. The inner connecting part 5 comprises a pulling mechanism 6 and a fixed abutting mechanism 7, wherein the pulling mechanism 6 further comprises a pulling cylinder 61, a plurality of outer abutting ring plates 62 and a concrete connecting block 63.

[0051] Referring to Figure 4 , in the embodiment, the pulling cylinder 61 is a cylinder made of glass fiber reinforced plastic, the pulling cylinder 61 is integrally formed on the end wall of the outer extension abutting pipe 41 away from the through pipe body 1, and the pulling cylinder 61 is located in the inner cavity of the limiting side pipe 42. The outer abutting ring plates 62 are integrally formed on the outer peripheral wall of the pulling cylinder 61, and the outer peripheral sizes of all the outer abutting ring plates 62 on the pulling cylinder 61 are different. The outer peripheral sizes of all the outer abutting ring plates 62 on the pulling cylinder 61 increase or decrease along the length direction of the pulling cylinder 61. In the embodiment, the outer peripheral sizes of all the outer abutting ring plates 62 on the pulling cylinder 61 decrease along the length direction of the pulling cylinder 61, wherein the outer diameter size of the outer abutting ring plate 62 closest to the outer extension abutting pipe 41 is the largest, and the outer diameter size of the outer abutting ring plate 62 farthest from the outer extension abutting pipe 41 is the smallest.

[0052] Referring to Figure 4 , the end wall of the outer extension insertion pipe 31 away from the through pipe body 1 is provided with an end connection groove 312, the end connection groove 312 extends along the length direction of the outer extension insertion pipe 31, and the inner diameter size of the end connection groove 312 is greater than the outer diameter size of the outer abutting ring plate 62 closest to the outer extension abutting pipe 41. When the operation personnel coaxially connects the adjacent two through pipe bodies 1, the pulling cylinder 61 can carry all the outer abutting ring plates 62 to be inserted into the inner cavity of the end connection groove 312.

[0053] Referring to Figure 4The outer extension pipe 41 is provided with a pre-connection channel 411 penetrating in the horizontal direction, and the inner cavity of the pre-connection channel 411 is connected with the inner cavity of the pull-tube 61. The outer extension pipe 41 is provided with an outer connection channel 11 penetrating in the horizontal direction at the end wall of the outer extension pipe 41, and the inner cavity of the outer connection channel 11 is connected with the inner cavity of the pre-connection channel 411. It is to be noted that the end of the outer connection channel 11 away from the pre-connection channel 411 is located at the middle of the outer extension pipe 41, and the operator opens a through hole on the inner wall of the outer extension pipe 41 which is connected with the inner cavity of the outer connection channel 11, so that the operator can operate the inner cavity of the outer connection channel 11 in the inner cavity of the outer extension pipe 41.

[0054] With reference to Figure 5 The pull-tube 61 is further provided with a plurality of seepage channels 611 penetrating the side wall, and in the embodiment, all the seepage channels 611 are located at the two ends of the pull-tube 61 in the radial direction and correspond to one outer extension ring 62 respectively. Each outer extension ring 62 is provided with a coagulation groove 621 corresponding to each seepage channel 611 at the side wall of the pull-tube 61, and the outer side wall of each outer extension ring 62 is further provided with a flow guide channel 622 penetrating the side wall at each coagulation groove 621.

[0055] With reference to Figure 4 And Figure 5 In the embodiment, the concrete block 63 is formed by solidification of the concrete slurry. The operator injects the concrete slurry into the inner cavity of the outer connection channel 11 through the through hole on the inner wall of the outer extension pipe 41, and the concrete slurry is filled in the pre-connection channel 411 and the inner cavity of the pull-tube 61 in sequence. Then, the concrete slurry filled in the inner cavity of the pull-tube 61 enters the inner cavity of the coagulation groove 621 through the seepage channel 611, and fills the inner cavity of the coagulation groove 621. The concrete slurry filled in the inner cavity of the coagulation groove 621 extends to the inner cavity of the terminal groove 312 through the flow guide channel 622, and fills the inner cavity of the terminal groove 312. When the concrete slurry is solidified, the inner cavities of the outer connection channel 11, the pre-connection channel 411, the pull-tube 61, the coagulation groove 621 and the terminal groove 312 form the concrete block 63 together, and the concrete block 63 connects the outer extension pipe 31, the pull-tube 61, the outer extension pipe 41 and the outer extension pipe 1, so that the connection strength of the adjacent outer extension pipes 1 is greatly improved, and the phenomenon of loose connection or even disconnection of the connected outer extension pipes 1 due to soft geological conditions is effectively reduced.

[0056] With reference to Figure 4 And Figure 5The fixed abutting mechanism 7 is arranged at the end of the pull cylinder 61 away from the outer extension abutting pipe 41. The fixed abutting mechanism 7 comprises an end fixed block 71, an outer tight ring 72 and a position locking assembly 73. The end fixed block 71 can be a solid steel block. The end fixed block 71 is welded at the end of the pull cylinder 61 away from the outer extension abutting pipe 41. The outer diameter of the end fixed block 71 is larger than the outer diameter of the pull cylinder 61, so as to block the opening at the end of the pull cylinder 61 away from the outer extension abutting pipe 41.

[0057] Referring to Figure 4 and Figure 5 In the embodiment, the outer diameter of the end fixed block 71 is matched with the inner diameter of the end connecting groove 312. The end fixed block 71 is inserted into the inner cavity of the end connecting groove 312, so as to ensure the stability of the abutting connection between the outer extension insertion pipe 31 and the outer extension abutting pipe 41. The outer tight ring 72 can be a rubber ring with flexible texture and large static friction coefficient. The outer tight ring 72 is sleeved on the outer wall of the end fixed block 71. When the end fixed block 71 is inserted into the inner cavity of the end connecting groove 312, the outer tight ring 72 is in interference fit with the side wall of the end fixed block 71 and the end connecting groove 312, so as to reduce the connection looseness of the end fixed block 71 relative to the end connecting groove 312, and help to improve the position stability of the abutting connection between the outer extension abutting pipe 41 and the outer extension insertion pipe 31, and the connection strength of the adjacent load conveying pipe body 1.

[0058] Referring to Figure 5 The position locking assembly 73 is used to connect the end fixed block 71 and the outer extension insertion pipe 31. The position locking assembly 73 comprises a locking position cylinder 731 and a positioning screw rod 732. The locking position cylinder 731 is vertically arranged and welded on the inner side wall of the outer extension insertion pipe 31. One end of the positioning screw rod 732 is threadedly connected to the inner cavity of the locking position cylinder 731. The side wall of the end fixed block 71 is provided with a preset groove 711. In the embodiment, the preset groove 711 is a threaded groove matched with the positioning screw rod 732.

[0059] Referring to Figure 5 When the outer extension insertion pipe 31 is inserted into the inner cavity of the limiting side pipe 42 and abuts against the outer extension abutting pipe 41, the pull cylinder 61 carrying the end fixed block 71 and all the outer abutting ring plates 62 is inserted into the inner cavity of the end connecting groove 312. At this time, the preset groove 711 corresponds to the locking position cylinder 731. The operator can rotate the positioning screw rod 732, so that the positioning screw rod 732 is tightly screwed into the inner cavity of the preset groove 711, and the end fixed block 71 is fixedly connected with the outer extension insertion pipe 31, which helps to further improve the connection strength of the adjacent load conveying pipe body 1.

[0060] The implementation principle of the stable glass fiber reinforced plastic sand-encased pipe structure of the embodiment of the application is as follows: when the outer expansion pipe 41 is inserted into the inner cavity of the limiting side pipe 42 and abuts against the outer expansion pipe 41, the pulling cylinder 61 carrying the end fixing block 71 and all the outer abutting ring plates 62 is inserted into the inner cavity of the end connecting groove 312, the positioning screw rod 732 is screwed through the locking screw cylinder 731 and is screwed tightly into the inner cavity of the preset groove 711, the end fixing block 71 is fixedly connected with the outer expansion pipe 31, and the connection strength of the adjacent load-carrying pipe body 1 is improved.

[0061] Then, the operator pours the concrete slurry into the inner cavity of the outer communication channel 11, and the concrete slurry can form a concrete connecting block 63 in the inner cavities of the outer communication channel 11, the pre-communication channel 411, the pulling cylinder 61, the cohesive groove 621 and the end connecting groove 312, so that the outer expansion pipe 31, the pulling cylinder 61, the outer expansion pipe 41 and the load-carrying pipe body 1 are connected, and the connection strength of the adjacent load-carrying pipe body 1 is greatly improved, and the phenomenon of loosening or even disconnection of the connected load-carrying pipe body 1 due to soft geological conditions is effectively reduced.

[0062] The application also discloses a construction method of the stable glass fiber reinforced plastic sand-encased pipe structure, and the construction method comprises the following construction steps.

[0063] Pushing and abutting: the load-carrying pipe body 1 to be installed is pushed into the soil, so that the insertion part 3 and the abutting part 4 of the adjacent load-carrying pipe body 1 correspond to each other.

[0064] End connecting: one end of the outer expansion pipe 31 with the locking ring 321 is inserted into the inner cavity of the limiting side pipe 42, so that the outer expansion pipe 31 and the outer expansion pipe 41 abut against each other. At this time, the locking ring 321 is tightly abutted between the limiting side pipe 42 and the outer expansion pipe 41 through compression deformation, so that the adjacent load-carrying pipe body 1 is preliminarily and stably connected, and the connection strength and stability of the coaxially connected adjacent load-carrying pipe body 1 are ensured.

[0065] Then, the operator screws the positioning screw rod 732 in the inner cavity of the outer expansion pipe 31, so that the positioning screw rod 732 is screwed tightly into the inner cavity of the preset groove 711, and the end fixing block 71 and the outer expansion pipe 31 are fixedly connected as a whole.

[0066] The operator injects the concrete slurry into the inner cavity of the outer connecting channel 11 from the inner cavity of the through-loading tube body 1, so that the concrete slurry is formed into a concrete connecting block 63 in the inner cavities of the outer connecting channel 11, the pre-connecting channel 411, the counter-pulling cylinder body 61, the cohesive groove 621 and the terminal groove 312, and then the concrete connecting block 63 simultaneously connects the outer expanding insertion tube 31, the counter-pulling cylinder body 61, the outer expanding insertion tube 41 and the through-loading tube body 1, so that the connection strength of the adjacent through-loading tube bodies 1 after being connected is further improved. This process effectively reduces the phenomenon that the connected through-loading tube bodies 1 are loose or even detached due to soft geology, thereby ensuring the connection strength and stability of the connected through-loading tube bodies 1.

[0067] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A stable glass fibre reinforced plastic mortar pipe construction, characterised in that: The utility model provides a kind of end connection device (2) for connecting adjacent pipe bodies (1), and the end connection device (2) includes plug-in part (3) and probe part (4), plug-in part (3) and probe part (4) are respectively arranged in the length direction of each pipe body (1) two ends, plug-in part (3) includes outer tube (31) and locking mechanism (32), locking mechanism (32) is arranged on pipe body (1) by outer tube (31), probe part (4) includes outer tube (41) and limiting side tube (42), outer tube (41) and limiting side tube (42) are arranged on pipe body (1), limiting side tube (42) is arranged around the outer periphery of outer tube (41), and the length dimension of limiting side tube (42) is greater than the length dimension of outer tube (41), any one pipe body (1) is inserted into the inner cavity of limiting side tube (42) on adjacent pipe body (1) by outer tube (31) with locking mechanism (32), so that adjacent pipe body (1) is connected, and the end connection device (2) further includes inner connection part (5), and inner connection part (5) includes pull mechanism (6) and fixed mechanism (7), fixed mechanism (7) is arranged on outer tube (41) by pull mechanism (6), and outer tube (31) is provided with end slot (312) for fixed mechanism (7) and pull mechanism (6) to enter and position, pull mechanism (6) includes pull cylinder (61), a plurality of outer ring plate (62) and concrete block (63), all outer ring plate (62) is arranged on pull cylinder (61), and all outer ring plate (62) is spaced along the length direction of pull cylinder (61), pull cylinder (61) is arranged on outer tube (41), and outer tube (41) is provided with pre-connected channel (411) in communication with the inner cavity of pull cylinder (61) in penetration, and outer tube (1) is provided with outer channel (11) in communication with pre-connected channel (411) in penetration, the side wall of pull cylinder (61) is further provided with seepage channel (611) in penetration corresponding to each outer ring plate (62), each outer ring plate (62) is provided with cohesive groove (621) corresponding to seepage channel (611), and the side wall of each outer ring plate (62) and located at cohesive groove (621) is provided with flow channel (622) in penetration, and concrete block (63) is solidified and formed by pouring concrete slurry in outer channel (11), pre-connected channel (411), the inner cavity of pull cylinder (61), the inner cavity of cohesive groove (621) and the inner cavity of end slot (312), for connecting outer tube (31) and outer tube (41), the outer diameter dimension of all outer ring plate (62) increases or decreases along the length direction of pull cylinder (61), and fixed mechanism (7) includes end fixed block (71), outer tight ring (72) and position lock assembly (73).The end fixed block (71) is arranged at one end of the pull-out barrel (61) away from the outer extension cannula (41), and the outer tight ring (72) is arranged on the outer peripheral wall of the end fixed block (71); the outer tight ring (72) is in interference fit between the end fixed block (71) and the side wall of the end fixed groove (312), the position locking assembly (73) is used for connecting the outer extension cannula (31) and the end fixed block (71); the position locking assembly (73) comprises a locking position cylinder (731) and a positioning screw rod (732); the locking position cylinder (731) is inserted on the outer extension cannula (31), one end of the positioning screw rod (732) is threadedly penetrated in the locking position cylinder (731), and the side wall of the end fixed block (71) is provided with a preset groove (711) for threadedly connecting the positioning screw rod (732).

2. The stable glass fiber reinforced plastic mortar pipe structure according to claim 1, characterized by: The locking mechanism (32) comprises a locking ring (321), and an inner sinking ring groove (311) for mounting the locking ring (321) is arranged on the outer extension insertion tube (31), and the locking ring (321) is in interference fit between the outer extension insertion tube (31) and the limiting side tube (42).

3. The stable glass fiber reinforced plastic mortar pipe structure according to claim 2, characterized in that: The locking ring (321) is provided with a guide plane (322) arranged along the outer periphery of the locking ring (321).

4. The method of installing a stable glass fiber reinforced plastic mortar pipe structure according to claim 3, characterized in that: The construction steps comprise the following steps: Pushing: the to-be-installed load pipe body (1) is pushed into the soil, so that the insertion part (3) and the probing part (4) of the adjacent load pipe body (1) correspond to each other; and the load pipe body (1) is ready for use; End connection: one end of the outer extension insertion tube (31) with the locking mechanism (32) is inserted into the inner cavity of the limiting side tube (42), so that the outer extension insertion tube (31) and the outer extension probing tube (41) abut against each other, the locking mechanism (32) is positioned between the outer extension probing tube (41) and the limiting side tube (42), so as to coaxially connect the two adjacent load pipe bodies (1); and a plurality of load pipe bodies (1) are connected to form a pipe jacking system.

Images