A prefabricated pipe gallery installation process

Abstract

The present invention relates to a prefabricated pipe gallery installation process, which includes the installation of at least one prefabricated pipe gallery segment, wherein a plurality of bolt adjustment rods are installed at the bottom of the prefabricated pipe gallery segment, and the lower ends of the bolt adjustment rods extend out of the bottom of the prefabricated pipe gallery segment; the installation of the prefabricated pipe gallery segment includes the following steps: S1, firstly positioning and installing the prefabricated pipe gallery segment in the front-back direction and the left-right direction; then, by rotating the bolt adjustment rods on the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is accurately positioned and installed in the height direction and the inclination; and so on, the remaining prefabricated pipe gallery segments are positioned and installed; S2, cement mortar is poured under the accurately positioned and installed prefabricated pipe gallery segment to form a base. The present invention can ensure the alignment accuracy of adjacent prefabricated pipe gallery segments, and is simple and convenient to operate, takes up a short time for hoisting equipment, and can further shorten the construction period of pipe gallery installation.

Description

Technical Field

[0001] The invention relates to the technical field of pipe gallery construction, and in particular to a prefabricated pipe gallery installation process. Background Art

[0002] The pipe gallery is an underground project, and the prefabricated pipe gallery can greatly shorten the construction period of the pipe gallery. Therefore, the pipe gallery construction has been mostly installed by prefabricated pipe gallery. At present, the installation method of prefabricated pipe gallery is mostly: first lay the cushion layer, wait for the cushion layer to solidify to a certain degree, start to hoist the prefabricated pipe gallery segment into the site, after the first section of the prefabricated pipe gallery segment is accurately positioned and installed, starting from the second section of the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is connected with the previous section of the prefabricated pipe gallery segment during the hoisting process, and then the reinforcement layer is poured between the prefabricated pipe gallery segment and the cushion layer. After the reinforcement layer solidifies to a certain degree, the prefabricated pipe gallery segment is unloaded from the hoisting equipment, and then the subsequent segments are hoisted and installed, and so on. However, in this way, the installation of a single section of prefabricated pipe gallery segment takes a long time for the hoisting equipment, and the cost of using the hoisting equipment is high. Moreover, before the reinforcement layer is solidified, the prefabricated pipe gallery segment being hoisted is in a semi-suspended state. Environmental factors such as wind may cause the hoisted prefabricated pipe gallery segment to shake, thereby affecting the reinforcement quality of the reinforcement layer, and further causing the prefabricated pipe gallery segment to be misaligned with the previous prefabricated pipe gallery segment, affecting the waterproofing of the pipe gallery in the later stage. Although the prefabricated pipe gallery segment can also be initially fixed by adding pads and driving steel chisels to allow the hoisting equipment to be disengaged in advance, this initial fixing method has poor stability and it is difficult to ensure the accuracy of the alignment of the prefabricated pipe gallery segment. Summary of the invention

[0003] The purpose of the present invention is to provide a prefabricated pipe gallery installation process, which can ensure the alignment accuracy of adjacent prefabricated pipe gallery segments, is simple and convenient to operate, takes up little time for hoisting equipment, and can further shorten the construction period of the pipe gallery installation.

[0004] To achieve the above object, the present invention discloses a prefabricated pipe gallery installation process, including the installation of at least one prefabricated pipe gallery segment, in particular, a plurality of bolt adjustment rods are installed at the bottom of the prefabricated pipe gallery segment, and the lower ends of the bolt adjustment rods extend out of the bottom of the prefabricated pipe gallery segment; the installation of the prefabricated pipe gallery segment includes the following steps: S1. Preliminary positioning and installation of the prefabricated pipe gallery segment in the front-to-back direction and the left-to-right direction. Then, by rotating the bolt adjustment rod on the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is accurately positioned and installed in the height direction and inclination. Similarly, the remaining prefabricated pipe gallery segments are positioned and installed. S2. Pour cement mortar under the accurately positioned and installed prefabricated pipe gallery segment to form a base; Wherein, step S2 is performed after step S1 is completed, or, step S2 is started after the positioning and installation of N prefabricated pipe gallery segments are completed in step S1, where N is a positive integer not less than 1.

[0005] After the above settings, taking the installation of a prefabricated pipe gallery segment other than the first section as an example, by positioning the currently installed prefabricated pipe gallery segment in the front-to-back direction and the left-to-right direction, the currently installed prefabricated pipe gallery segment can be accurately aligned with the previous section and the prefabricated pipe gallery segment (or other docking components) that has been positioned and installed in the horizontal direction (left-to-right direction), and the two can be docked with each other (that is, positioning is achieved in the front-to-back direction), and then by adjusting the bolt adjustment rod on the currently installed prefabricated pipe gallery segment, the currently installed prefabricated pipe gallery segment is adjusted vertically (height direction) and inclination, so as to complete the precise positioning and installation of the currently installed prefabricated pipe gallery segment. At this time, the currently installed prefabricated pipe gallery segment is precisely aligned and connected with the previous section of the prefabricated pipe gallery segment (or other docking components). For the installation of the first section of the prefabricated pipe gallery segment, the principle is similar, except that the positioning reference is different, which will not be repeated. Pouring cement mortar under the positioned and installed prefabricated pipe gallery segments to form a base can ensure that the prefabricated pipe gallery segments are reliably supported, thereby ensuring the installation stability of the pipe gallery.

[0006] In summary, the present invention can ensure the accuracy of alignment of adjacent prefabricated pipe gallery segments, and can also ensure the accuracy of the installation position of a separately arranged prefabricated pipe gallery segment, and the operation is simple and convenient. After the prefabricated pipe gallery segment is accurately positioned and installed, the bolt adjustment rod can stably support the prefabricated pipe gallery segment, and the hoisting equipment does not need to wait for the base to solidify before evacuating. The hoisting equipment takes up a short time, and the construction period of the pipe gallery installation can be further shortened.

[0007] Preferably, a plurality of bolt sleeves are embedded in the prefabricated pipe gallery segment, and the bolt sleeves correspond to the bolt adjustment rods one by one and are threadedly connected. Such an arrangement can ensure that the bolt adjustment rods can be reliably rotated, thereby exerting their adjustment function.

[0008] Preferably, the upper end of the bolt adjustment rod extends into the inner cavity of the prefabricated pipe gallery segment. When the cement mortar poured below the prefabricated pipe gallery segment solidifies to a set strength, the bolt adjustment rod exposed in the inner cavity of the corresponding prefabricated pipe gallery segment is cut and removed. With this arrangement, the operator can rotate the bolt adjustment rod in the inner cavity of the pipe gallery segment, which can facilitate operation and improve installation efficiency. The exposed bolt adjustment rod is cut off after the base is solidified to prevent the exposed bolt adjustment rod from interfering with subsequent construction.

[0009] Preferably, the bolt adjustment rod is threadedly connected to the prefabricated pipe gallery segment after the prefabricated pipe gallery segment is positioned in the front-back direction and the left-right direction. With this arrangement, the problem of the bolt adjustment rod being unable to rotate due to collision during movement can be avoided, and the transportation of the prefabricated pipe gallery segment can be facilitated. In addition, the bolt adjustment rod can be prevented from being lost or stolen during transportation and storage.

[0010] Preferably, a pad is provided at the bottom end of the bolt adjustment rod. By providing the pad, the bolt adjustment rod can be prevented from being inserted into the foundation pit when supporting the prefabricated pipe gallery segment, thereby ensuring the installation accuracy of the prefabricated pipe gallery segment and protecting the foundation cushion layer. The pad can be an anti-punching steel plate pad.

[0011] Preferably, in step S2, blocks are firstly arranged on both sides of the prefabricated pipe gallery segment that has been positioned and installed, and there is a gap between the block and the adjacent prefabricated pipe gallery segment, and the top surface of the block is not lower than the bottom surface of the adjacent prefabricated pipe gallery segment. By setting the block, cement mortar can be prevented from overflowing, and the setting of the gap can facilitate inspection, thereby ensuring that the base is reliably formed and the installation stability of the pipe gallery segment is ensured.

[0012] Preferably, the gap between the stopper and the adjacent prefabricated pipe gallery segment is not less than 5 cm, and the top surface of the stopper is at least 10 cm higher than the bottom surface of the adjacent prefabricated pipe gallery segment. This arrangement facilitates the inspection of the cement mortar pouring, and the two sides of the base can be raised to better limit the bottom two sides of the prefabricated pipe gallery segment and ensure the installation stability of the prefabricated pipe gallery segment.

[0013] Preferably, the cement mortar includes cement, sand, fly ash, water reducing agent and expansion agent, wherein the alkali content of cement does not exceed 0.6%, the fineness of cement does not exceed 350㎡ / kg, and the content of tricalcium aluminate in cement does not exceed 8%; the fly ash is Class F secondary fly ash, and the fly ash parameter is not less than 120kg / m³; the water reducing agent is a polycarboxylic acid water reducing agent, and the water reduction rate is not less than 30%; the deformation of the cement mortar is 99.5-100.5%. The cement mortar configured in this way has good compactness, thereby ensuring that the formed base can reliably support the prefabricated pipe gallery segment.

[0014] Preferably, in step S1, the prefabricated pipe gallery segment is moved by the cooperation of the lifting equipment and the transport and installation vehicle, the lifting equipment places the prefabricated pipe gallery segment on the transport and installation vehicle, and the transport and installation vehicle moves the prefabricated pipe gallery segment to position it in the front-back direction and the left-right direction. After such arrangement, the prefabricated pipe gallery segment is moved by the transport and installation vehicle, and the time occupied by the lifting equipment for a single section of the prefabricated pipe gallery segment is shorter. When the transport and installation vehicle moves the prefabricated pipe gallery segment, the lifting equipment can go to lift the next section of the prefabricated pipe gallery segment to be installed, which can improve the work efficiency. In addition, by using the transport and installation vehicle to complete the preliminary positioning and installation of the prefabricated pipe gallery segment, it is possible to avoid or reduce the interference of environmental factors during the preliminary positioning and installation of the prefabricated pipe gallery segment, and it is also possible to improve the work efficiency.

[0015] Preferably, the transport and installation vehicle includes at least two groups of mobile devices, the mobile device includes two mobile mechanisms and a supporting mechanism, one of which is located on one side of the supporting mechanism, and the other mobile mechanism is located on the other side of the supporting mechanism, the mobile mechanism includes a frame, a vertical adjustment assembly, a connecting piece and a plurality of universal wheels, and the universal wheels are installed at the bottom of the frame; the vertical adjustment assembly is installed on the frame, and the vertical adjustment assembly drives the connecting piece to move up and down; the supporting mechanism is detachably connected to the connecting piece; when moving the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is placed on the supporting mechanism, and the two mobile mechanisms of the same mobile device are located on both sides of the prefabricated pipe gallery segment. After such a setting, the moving direction of the mobile device is flexible, which is conducive to the preliminary positioning and installation of the prefabricated pipe gallery segment, and after the prefabricated pipe gallery segment is accurately positioned and installed, the supporting mechanism can be easily separated from the mobile mechanism, so as to facilitate the removal of the supporting mechanism, and the loading and unloading of the mobile device is convenient and fast, which is conducive to the use of the transfer. In addition, by reasonably adjusting the height of the connecting piece, the adjustment process of the bolt adjustment rod can be accelerated.

[0016] Preferably, the support mechanism includes a transverse force-bearing rod and at least one pad, and the pad is fixed or movably connected to the transverse force-bearing rod; both ends of the transverse force-bearing rod are movably connected with a first limiter, and the movable direction of the first limiter is the front-rear direction of the transverse force-bearing rod, and the frame is provided with a second limiter that cooperates with the first limiter. The provision of the pad can increase the contact area between the prefabricated pipe gallery segment and the support mechanism, and play a protective role for the prefabricated pipe gallery segment. The cooperation between the first limiter and the second limiter can prevent the support mechanism from separating from the moving mechanism during the movement, and the first limiter is movably connected to the transverse force-bearing rod, which can be flexibly adjusted to improve its applicability and facilitate the assembly of the mobile device.

[0017] Preferably, the pad hoop is arranged on the transverse force-bearing rod, and the pad is provided with an arc-shaped arched portion at the position opposite to the transverse force-bearing rod, and the arc-shaped arched portion abuts against the top of the transverse force-bearing rod; the top of the transverse force-bearing rod is a plane, or the top of the transverse force-bearing rod is provided with an arc surface adapted to the arc-shaped arched portion. With such an arrangement, the pad can have a certain rotation ability (the pad does not need to be clamped on the transverse force-bearing rod), because it is difficult to keep the prefabricated pipe gallery segment horizontal when it is hoisted and placed on the transport and installation vehicle, and the bottom of the foundation pit may not be horizontal. Therefore, when the pad has a certain rotation ability, the pad and the prefabricated pipe gallery segment can be adaptively adjusted during the process of placing the prefabricated pipe gallery segment on the transport and installation vehicle and during the movement, which is beneficial to the transportation of the prefabricated pipe gallery segment and the protection of the transport and installation vehicle.

[0018] Preferably, the vertical adjustment assembly includes a manual drive and a vertical screw main shaft, the vertical screw main shaft is threadedly connected to the frame, and the manual drive is fixedly connected or transmission-connected to the vertical screw main shaft; the connecting member is a hook, the hook is rotationally connected to the bottom of the vertical screw main shaft, and the transverse force rod is overlapped on the hook; the frame or the hook is movably connected with a stopper for limiting the rotation of the transverse force rod. By hooking the transverse force rod with the hook, loading and unloading are convenient, and by limiting the rotation of the transverse force rod with the stopper, the position of the pad can be guaranteed, and the support mechanism can reliably support the prefabricated pipe gallery segment.

[0019] In summary, the transport and installation vehicle arranged as above has the advantages of simple structure and convenient loading and unloading.

[0020] The present invention has the following beneficial effects: Taking the installation of a prefabricated pipe gallery segment other than the first section as an example, after positioning the currently installed prefabricated pipe gallery segment in the front-to-back direction and the left-to-right direction, the currently installed prefabricated pipe gallery segment can be accurately aligned with the previous section and the prefabricated pipe gallery segment (or other docking components) that has been positioned and installed in the horizontal direction (left-to-right direction), and the two can be docked with each other (that is, positioning is achieved in the front-to-back direction). Then, by adjusting the bolt adjustment rod on the currently installed prefabricated pipe gallery segment, the currently installed prefabricated pipe gallery segment is adjusted vertically (in the height direction) and inclination, thereby completing the precise positioning and installation of the currently installed prefabricated pipe gallery segment. At this time, it can be ensured that the currently installed prefabricated pipe gallery segment is accurately aligned and connected with the previous section of the prefabricated pipe gallery segment (or other docking components). For the installation of the first section of the prefabricated pipe gallery segment, the principle is similar, except that the positioning reference is different, which will not be repeated. By pouring cement mortar under the positioned and installed prefabricated pipe gallery segments to form a base, it can be ensured that the prefabricated pipe gallery segments are reliably supported, thereby ensuring the installation stability of the pipe gallery. The present invention can ensure the alignment accuracy of adjacent prefabricated pipe gallery segments, and can also ensure the accuracy of the installation position of the prefabricated pipe gallery segments that are individually set, and the operation is simple and convenient. After the prefabricated pipe gallery segments are accurately positioned and installed, the bolt adjustment rod can stably support the prefabricated pipe gallery segments, and the lifting equipment does not need to wait for the base to solidify before evacuating. The lifting equipment takes up a short time, and the construction period of the pipe gallery installation can be further shortened.

[0021] By moving the prefabricated pipe gallery segment by the transport and installation vehicle, the time that a single prefabricated pipe gallery segment occupies the hoisting equipment is shorter. When the transport and installation vehicle moves the prefabricated pipe gallery segment, the hoisting equipment can go to hoist the next prefabricated pipe gallery segment to be installed, which can improve the work efficiency. In addition, by completing the preliminary positioning and installation of the prefabricated pipe gallery segment by the transport and installation vehicle, the interference of environmental factors during the preliminary positioning and installation of the prefabricated pipe gallery segment can be avoided or reduced, and the work efficiency can also be improved. In addition, the transport and installation vehicle of the present invention has the advantages of simple structure and convenient loading and unloading, and is easy to use for transfer, and is not easy to interfere with the installation of the prefabricated pipe gallery. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 Schematic diagram of the cross section of the prefabricated pipe gallery segment.

[0022] Figure 2 Schematic diagram of a transport and installation vehicle carrying a prefabricated tunnel segment (bolt sleeves and bolt adjustment rods are not shown).

[0023] Figure 3 A schematic diagram of a mobile device.

[0024] Figure 4 Schematic diagram of the transverse force rod.

[0025] Figure 5 The schematic diagram of the installation of the pad is shown in FIG.

[0026] Figure 6 Schematic diagram of the moving mechanism.

[0027] Figure 7 A top view of the moving mechanism.

[0028] Figure 8 This is a schematic diagram (cross-sectional view) of the prefabricated tunnel segment after preliminary positioning and installation.

[0029] Fig. 9 This is a schematic diagram (cross-sectional view) of the prefabricated tunnel segment after precise positioning and installation.

[0030] Fig.10 Schematic diagram of the setting of the stopper.

[0031] Main component symbols: Prefabricated pipe gallery segment 10, bolt sleeve 11, bolt adjustment rod 12, cushion block 13, socket plug 14, socket 15; Moving device 20, moving mechanism 21, frame 211, universal wheel 212, manual driving member 213, vertical screw main shaft 214, hook 215, second position limiting member 216, anti-rotation member 217, supporting mechanism 22, transverse force rod 221, pad 222, hoop 223, first position limiting member 224, threaded section 225, arc-shaped arched portion 226; Foundation pit 30, cushion layer 31; Stopper 40; Substrate 50. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] like Figure 1-10 As shown, the present invention discloses a prefabricated pipe gallery installation process, which can ensure the alignment accuracy of adjacent prefabricated pipe gallery segments 10, and can also ensure the accuracy of the installation position of the separately set prefabricated pipe gallery segments 10 (including the first set prefabricated pipe gallery segments 10), and the operation is simple and convenient, the hoisting equipment occupies a short time, and the construction period of the pipe gallery installation can be further shortened. The prefabricated pipe gallery is composed of multiple sections of prefabricated pipe gallery segments 10. Before introducing the process, the setting of the prefabricated pipe gallery segments 10 and the equipment for transporting the prefabricated pipe gallery segments 10 are first described.

[0034] A plurality of bolt sleeves 11 are pre-buried at the bottom of the prefabricated pipe gallery segment 10 of the present invention. These bolt sleeves 11 are preferably arranged in an array, and the number is preferably not less than four. The axial direction of the bolt sleeve 11 is the vertical direction, and each bolt sleeve 11 corresponds to a bolt adjustment rod 12, and the two are threadedly connected. The upper end of the bolt adjustment rod 12 extends into the inner cavity of the prefabricated pipe gallery segment 10, and an end cap can be provided at the upper end of the bolt adjustment rod 12 to facilitate rotation, such as directly rotating with a wrench. The lower end of the bolt adjustment rod 12 extends out of the bottom of the prefabricated pipe gallery segment 10. In order to prevent the lower end of the bolt adjustment rod 12 from poking into the foundation pit 30, a pad 13 is provided at the bottom end of the bolt adjustment rod 12 to ensure that the bolt adjustment rod 12 can stably and reliably support the prefabricated pipe gallery segment 10. The pad 13 can be made of a steel plate. The bolt adjustment rod 12 can be connected to the prefabricated pipe gallery segment 10 during the installation process, for example, after the prefabricated pipe gallery segment 10 is moved to a designated position by a transport and installation vehicle and initially positioned, the installation is performed. After the prefabricated pipe gallery segment 10 is initially positioned, the pad 13 is inserted from the bottom of the prefabricated pipe gallery segment 10 to the bottom of the corresponding bolt adjustment rod 12.

[0035] The prefabricated pipe gallery segment 10 of the present invention is moved by the cooperation of lifting equipment (crane, gantry crane, etc.) and a transport and installation vehicle. The transport and installation vehicle is first placed in the foundation pit 30, and the lifting equipment places the prefabricated pipe gallery segment 10 on the transport and installation vehicle, which moves the prefabricated pipe gallery segment 10 in the foundation pit 30.

[0036] As a preferred embodiment, the transport and installation vehicle includes at least two groups of mobile devices 20, each of which includes two mobile mechanisms 21 and a support mechanism 22, and the two sides of the support mechanism 22 are detachably connected to a mobile mechanism 21. The support mechanism 22 includes a transverse force rod 221 and at least one pad 222. The transverse force rod 221 is selected in length and cross-sectional size according to the size of different pipe corridors and the size of the foundation pit 30. The pad 222 is fixed or movably connected to the transverse force rod 221, and the latter is preferred. In this case, the pad 222 is connected to the transverse force rod 221 through a hoop 223. In addition, the cross-section of the transverse force rod 221 is preferably square to avoid a large rotation of the pad 222 and ensure that the plate surface of the pad 222 is set upward, thereby playing a reliable supporting role. In addition, an arc-shaped arched portion 226 is also provided at the position of the pad 222 facing the transverse force rod 221, and the arc-shaped arched portion 226 abuts against the top of the transverse force rod 221. The top of the transverse force rod 221 can be set as a plane, or the top of the transverse force rod 221 is set as a curved surface adapted to the arc-shaped arched portion 226 to increase the contact area. After such a setting, the pad 222 can have a certain rotation ability (the pad 222 needs not to be clamped on the transverse force rod 221), because it is difficult to keep the prefabricated pipe gallery segment 10 horizontal when it is hoisted and placed on the transport and installation vehicle, and the bottom of the foundation pit 30 may not be horizontal. Therefore, when the pad 222 has a certain rotation ability, during the process of placing the prefabricated pipe gallery segment 10 on the transport and installation vehicle and during the movement, the pad 222 and the prefabricated pipe gallery segment 10 can be adaptively adjusted, which is beneficial to the transportation of the prefabricated pipe gallery segment 10 and the protection of the transport and installation vehicle.

[0037] The moving mechanism 21 includes a frame 211, a vertical adjustment assembly, a connecting member and a plurality of universal wheels 212. The universal wheels 212 are installed at the bottom of the frame 211, so that the frame 211 can move flexibly. The vertical adjustment assembly is installed on the frame 211. The vertical adjustment assembly includes a manual drive 213 and a vertical screw main shaft 214. The vertical screw main shaft 214 is threadedly connected to the frame 211. The manual drive 213 can be a turntable. The manual drive 213 is fixedly connected to the vertical screw main shaft 214. At this time, the turntable is directly rotated to realize the rotation of the vertical screw main shaft 214. Alternatively, the manual drive 213 is connected to the vertical screw main shaft 214 in a transmission manner (such as a chain drive or a gear drive). It is better that the manual drive 213 is connected to the frame 211 in a rotational manner. At this time, the resistance can be reduced by adjusting the transmission ratio (when the support mechanism 22 is under pressure). The connecting member is a hook 215, which is rotatably connected to the bottom of the vertical screw main shaft 214. When the supporting mechanism 22 is connected to the moving mechanism 21, the transverse force rod 221 is hung on the hook 215.

[0038] In order to ensure the connection stability between the support mechanism 22 and the moving mechanism 21, and to ensure that the support mechanism 22 can reliably support the prefabricated pipe gallery segment 10, first limiters 224 are movably connected at both ends of the transverse force rod 221, and the movable direction of the first limiter 224 is the front-rear direction of the transverse force rod 221; threaded sections 225 can be provided at both ends of the transverse force rod 221, and the first limiter 224 is threadedly connected to the threaded sections 225. A second limiter 216 that is limitedly matched with the first limiter 224 is provided on the frame 211, and the second limiter 216 can be a U-shaped latch that is plugged and matched with the frame 211, and the latch can be inserted into the transverse force rod 221 and abutted against the first limiter 224 for limiting. In addition, a stopper 217 for limiting the rotation of the transverse force rod 221 is movably connected to the frame 211 or the hook 215. When the cross-section of the transverse force rod 221 is square, the form and installation method of the stopper 217 can be the same as the second limiter 216.

[0039] When the transport and installation vehicle moves the prefabricated pipe gallery segment 10, the prefabricated pipe gallery segment 10 is placed on the pad 222, and the two moving mechanisms 21 of the same moving device 20 are located on both sides of the prefabricated pipe gallery segment 10. When the bolt adjustment rod 12 supports the prefabricated pipe gallery segment 10, the supporting mechanism 22 no longer supports the prefabricated pipe gallery segment 10, and the supporting mechanism 22 can be taken out.

[0040] The following is an introduction to the installation process of a prefabricated pipe gallery composed of multiple prefabricated pipe gallery segments continuously spliced ​​together, specifically, including the following steps: S1. Accurately position and install the first section of the prefabricated pipe gallery segment 10 to provide a reference for the subsequent installation of the prefabricated pipe gallery segment 10. The accurate positioning and installation of the first section of the prefabricated pipe gallery segment 10 can be completed by using a transport and installation vehicle and a bolt adjustment rod 12. The first section of the prefabricated pipe gallery segment 10 is first hoisted onto the transport and installation vehicle by a hoisting device, and then moved to the starting installation position of the pipe gallery by the transport and installation vehicle. The first section of the prefabricated pipe gallery segment 10 is accurately positioned and installed by moving the transport and installation vehicle, adjusting the height of the transverse force rod 221, and adjusting the length of each bolt adjustment rod 12 extending out of the bottom of the pipe gallery segment 10, and then using positioning tools (theodolite, level, etc.). Of course, the existing solution can also be used to install the first section of the prefabricated pipe gallery segment 10.

[0041] S2, installing the prefabricated pipe gallery segments 10 after the first prefabricated pipe gallery segment 10. Specifically, firstly, the prefabricated pipe gallery segment 10 currently being installed is preliminarily positioned and installed with the previous prefabricated pipe gallery segment 10 that has been positioned and installed by moving the transport and installation vehicle; then, by rotating the bolt adjustment rod 12 on the prefabricated pipe gallery segment 10 currently being installed, the prefabricated pipe gallery segment 10 is accurately positioned and installed relative to the previous prefabricated pipe gallery segment 10 that has been positioned and installed; and so on, the remaining prefabricated pipe gallery segments 10 are installed.

[0042] Specifically, the assembly of the second section of the prefabricated pipe gallery segment 10 with the first section of the prefabricated pipe gallery segment 10 is described in detail. The hoisting equipment places the second section of the prefabricated pipe gallery segment 10 on the transport and installation vehicle, and then pushes the second section of the prefabricated pipe gallery segment 10 to move it to the downstream position of the first section of the prefabricated pipe gallery segment 10, so that the socket 14 of the second section of the prefabricated pipe gallery segment 10 abuts against the socket 15 of the first section of the prefabricated pipe gallery segment 10 (the socket 14 and the socket 15 may not be plugged in at this time, but it is the best case if they can be plugged in), that is, the positioning in the front and rear directions is completed, and the second section of the prefabricated pipe gallery segment 10 and the first section of the prefabricated pipe gallery segment 10 are accurately aligned in the horizontal direction (left and right direction) by moving the transport and installation vehicle, and the preliminary positioning and installation are completed. Then, the bolt adjustment rod 12 is screwed and the gasket 13 is plugged. Afterwards, the bolt adjustment rod 12 is rotated in the inner cavity of the second prefabricated pipe gallery segment 10 to lift the prefabricated pipe gallery segment 10. At the same time, the inclination of the prefabricated pipe gallery segment 10 can be adjusted by adjusting the extension length of each bolt adjustment rod 12. Specifically, the bolt adjusting rod 12 of the front second section prefabricated pipe gallery segment 10 (the end close to the first section) can be adjusted first, so that the bottom of the socket plug 14 of the second section prefabricated pipe gallery segment 10 is butted against the bottom of the socket 15 of the first section prefabricated pipe gallery segment 10, and then the bolt adjusting rod 12 at the rear end of the second section prefabricated pipe gallery segment 10 (the end away from the first section) is adjusted, so that the top of the socket plug 14 of the second section prefabricated pipe gallery segment 10 is butted against the top of the socket 15 of the first section prefabricated pipe gallery segment 10, thereby completing the precise positioning and installation of the second section prefabricated pipe gallery segment 10. At this time, if the socket plug 14 of the second section prefabricated pipe gallery segment 10 is not plugged into place, the second section prefabricated pipe gallery segment 10 can be lifted and pushed again by lifting the support mechanism 22 of the transport and installation vehicle so that the two are plugged into place, and then the support mechanism 22 is lowered, and the positioning check of the second section prefabricated pipe gallery segment 10 is performed again. After no problem is found, the transport and installation vehicle can be disassembled and evacuated. Of course, during the initial positioning and installation, the supporting mechanism 22 of the transport and installation vehicle can be lifted so that the bottom of the socket 14 of the second prefabricated pipe gallery segment 10 is docked with the bottom of the socket 15 of the first prefabricated pipe gallery segment 10. The subsequent prefabricated pipe gallery segments 10 can be installed in accordance with the installation method of the second prefabricated pipe gallery segment 10. A layer of concrete cushion 31 can be pre-laid in the foundation pit 30 to facilitate the movement of the transport and installation vehicle.

[0043] When the bolt adjustment rod 12 reliably supports the prefabricated pipe gallery segment 10, the bottom surface of the prefabricated pipe gallery segment 10 is no longer pressed on the pad 222. At this time, by disassembling the moving mechanism 21 and the supporting mechanism 22, the supporting mechanism 22 can be smoothly removed from the bottom of the prefabricated pipe gallery segment 10, providing avoidance for step S3, and the transport and installation vehicle can be reassembled and reused.

[0044] S3, pour cement mortar under the prefabricated pipe gallery segment 10 that has been positioned and installed to form a base 50. Specifically, first, a block 40 is respectively set on both sides of the accurately positioned and installed prefabricated pipe gallery segment 10, and there is a gap between the block 40 and the adjacent prefabricated pipe gallery segment 10, and the gap width L is preferably not less than 5cm, and 15cm can be selected. In addition, the top surface of the block 40 is not lower than the bottom surface of the adjacent prefabricated pipe gallery segment 10, and the top surface of the block 40 is preferably higher than the bottom surface of the adjacent prefabricated pipe gallery segment 10 by a distance H of at least 10cm. By setting the block 40, the overflow of cement mortar can be avoided, and the setting of the gap can be convenient for viewing, thereby ensuring that the base 50 is reliably formed and the installation stability of the pipe gallery segment is ensured. In addition, the two sides of the formed base 50 are raised, which can better limit the bottom sides of the prefabricated pipe gallery segment 10, thereby ensuring the installation stability of the prefabricated pipe gallery segment 10.

[0045] In order to ensure that the formed base 50 can reliably support the prefabricated pipe gallery segment 10, the cement mortar includes cement, sand, fly ash, water reducing agent and expansion agent, among which the alkali content of cement is required to be no more than 0.6%, the fineness of cement is no more than 350㎡ / kg, and the content of tricalcium aluminate in cement is no more than 8%. The fly ash is Class F secondary fly ash, and the fly ash parameter is not less than 120kg / m³. The water reducing agent is a polycarboxylic acid water reducing agent, and the water reduction rate is required to be no less than 30%. The amount of expansion agent should be tested by the mixing ratio to ensure that the deformation of the cement mortar is 99.5-100.5%.

[0046] When the cement mortar poured below the prefabricated pipe gallery segment 10 is cured to a set strength, the bolt adjustment rods 12 exposed in the inner cavity of the corresponding prefabricated pipe gallery segment 10 are cut and removed, and anti-corrosion treatment is performed.

[0047] In this case, step S3 is performed after step S2 is completed. Alternatively, step S3 is started after the precise positioning and installation of N prefabricated pipe gallery segments 10 is completed in step S2, where N is a positive integer not less than 1. For example, the construction of the base 50 is started after the installation of 5 prefabricated pipe gallery segments 10 is completed.

[0048] First, the first section of the prefabricated pipe gallery segment 10 is accurately positioned and installed, and then the currently installed prefabricated pipe gallery segment 10 is preliminarily positioned and installed with the previous section of the prefabricated pipe gallery segment 10, that is, the currently installed prefabricated pipe gallery segment 10 is accurately aligned with the previous section of the prefabricated pipe gallery segment 10 that has been positioned and installed, and then the currently installed prefabricated pipe gallery segment 10 is adjusted in vertical and horizontal angles by adjusting the bolt adjustment rod 12 on the currently installed prefabricated pipe gallery segment 10. Cement mortar is poured under the accurately positioned and installed prefabricated pipe gallery segment 10 to form a base 50, which can ensure that the prefabricated pipe gallery segment is reliably supported and the installation stability of the pipe gallery is ensured.

[0049] The present invention can ensure the alignment accuracy of adjacent prefabricated pipe gallery segments 10, and is simple and convenient to operate. After the prefabricated pipe gallery segment 10 is accurately positioned and installed, the bolt adjustment rod 12 can stably support the prefabricated pipe gallery segment 10, and the lifting equipment does not need to wait for the base 50 to solidify before evacuating. After the lifting equipment places the prefabricated pipe gallery segment 10 on the transport and installation vehicle, it can go to lift another prefabricated pipe gallery segment 10. The lifting equipment takes up a short time, and multiple groups of transport and installation vehicles can also be set in the foundation pit 30, so that the lifting equipment can rest or exit in advance. The prefabricated pipe gallery segment 10 is moved in the foundation pit 30 by the transport and installation vehicle, which is less affected by environmental factors. In summary, the process of the present invention can also help shorten the construction period of the pipe gallery installation.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A prefabricated pipe gallery installation process, comprising the installation of at least one prefabricated pipe gallery segment, characterized in that: A plurality of bolt adjustment rods are installed at the bottom of the prefabricated pipe gallery segment, and the lower ends of the bolt adjustment rods extend out of the bottom of the prefabricated pipe gallery segment; the installation of the prefabricated pipe gallery segment includes the following steps: S1. Preliminary positioning and installation of the prefabricated pipe gallery segment in the front-to-back direction and the left-to-right direction. Then, by rotating the bolt adjustment rod on the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is accurately positioned and installed in the height direction and inclination. Similarly, the remaining prefabricated pipe gallery segments are positioned and installed. S2. Pour cement mortar under the accurately positioned and installed prefabricated pipe gallery segment to form a base; Wherein, step S2 is performed after step S1 is completed, or, step S2 is started after the positioning and installation of N prefabricated pipe gallery segments are completed in step S1, where N is a positive integer not less than 1.

2. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: A plurality of bolt sleeves are pre-buried in the prefabricated pipe gallery segment, and the bolt sleeves correspond to the bolt adjusting rods one by one and are threadedly connected.

3. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: The upper end of the bolt adjustment rod extends into the inner cavity of the prefabricated pipe gallery segment. When the cement mortar poured below the prefabricated pipe gallery segment solidifies to a set strength, the bolt adjustment rod exposed in the inner cavity of the corresponding prefabricated pipe gallery segment is cut and removed.

4. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: The bolt adjustment rod is threadedly connected to the prefabricated pipe gallery segment after the prefabricated pipe gallery segment is positioned in the front-to-back direction and the left-to-right direction.

5. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: A cushion block is arranged at the bottom end of the bolt adjusting rod.

6. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: In step S2, blocks are firstly arranged on both sides of the positioned and installed prefabricated pipe gallery segment, with a gap between the block and the adjacent prefabricated pipe gallery segment, and the top surface of the block is not lower than the bottom surface of the adjacent prefabricated pipe gallery segment.

7. The prefabricated pipe gallery installation process according to claim 6 is characterized in that: The gap between the stopper and the adjacent prefabricated pipe gallery segment is not less than 5 cm, and the top surface of the stopper is at least 10 cm higher than the bottom surface of the adjacent prefabricated pipe gallery segment.

8. The prefabricated pipe gallery installation process according to claim 1 is characterized in that: The cement mortar includes cement, sand, fly ash, water reducing agent and expansion agent, wherein the alkali content of cement does not exceed 0.6%, the fineness of cement does not exceed 350㎡ / kg, and the content of tricalcium aluminate in cement does not exceed 8%; the fly ash is Class F secondary fly ash, and the fly ash parameter is not less than 120kg / m³; the water reducing agent is a polycarboxylic acid-based water reducing agent, and the water reduction rate is not less than 30%; the deformation of the cement mortar is 99.5-100.5%.

9. The prefabricated pipe gallery installation process according to claim 1, characterized in that: In step S1, the prefabricated pipe gallery segment is moved by the cooperation of the hoisting equipment and the transport and installation vehicle. The hoisting equipment places the prefabricated pipe gallery segment on the transport and installation vehicle, and the transport and installation vehicle moves the prefabricated pipe gallery segment to position it in the front-to-back direction and the left-to-right direction.

10. The prefabricated pipe gallery installation process according to claim 9, characterized in that: The transport and installation vehicle includes at least two groups of moving devices, and the moving device includes two moving mechanisms and a supporting mechanism, wherein one moving mechanism is located on one side of the supporting mechanism, and the other moving mechanism is located on the other side of the supporting mechanism; the moving mechanism includes a frame, a vertical adjustment component, a connecting piece and a plurality of universal wheels, and the universal wheels are installed at the bottom of the frame; the vertical adjustment component is installed on the frame, and the vertical adjustment component drives the connecting piece to move up and down; the supporting mechanism is detachably connected to the connecting piece; when moving the prefabricated pipe gallery segment, the prefabricated pipe gallery segment is placed on the supporting mechanism, and the two moving mechanisms of the same moving device are located on both sides of the prefabricated pipe gallery segment.

11. The prefabricated pipe gallery installation process according to claim 10, characterized in that: The supporting mechanism includes a transverse force-bearing rod and at least one pad, and the pad is fixed or movably connected to the transverse force-bearing rod; both ends of the transverse force-bearing rod are movably connected with a first limit member, and the movable direction of the first limit member is the front and rear direction of the transverse force-bearing rod, and the frame is provided with a second limit member that cooperates with the first limit member.

12. The prefabricated pipe gallery installation process according to claim 11, characterized in that: The pad hoop is arranged on the transverse force-bearing rod, and the pad is provided with an arc-shaped arched portion at the position opposite to the transverse force-bearing rod, and the arc-shaped arched portion abuts against the top of the transverse force-bearing rod; the top of the transverse force-bearing rod is a plane, or the top of the transverse force-bearing rod is provided with an arc surface adapted to the arc-shaped arched portion.

13. The prefabricated pipe gallery installation process according to claim 11, characterized in that: The vertical adjustment assembly includes a manual drive part and a vertical screw spindle, the vertical screw spindle is threadedly connected to the frame body, and the manual drive part is fixedly connected or transmission connected to the vertical screw spindle; the connecting part is a hook, the hook is rotatably connected to the bottom of the vertical screw spindle, and the transverse force-bearing rod is overlapped on the hook; the frame body or the hook is movably connected with a stopper for limiting the rotation of the transverse force-bearing rod.

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