CN108505407B - A construction method of a fully prefabricated concrete freight suspended monorail structure - Google Patents

Abstract

The invention discloses a construction method of a fully-prefabricated assembled concrete freight suspended monorail structure, which comprises the steps of prefabricating and processing required prefabricated parts, wherein the prefabricated parts comprise prefabricated raft foundations, prefabricated hollow concrete piers, prefabricated concrete cross beams and prefabricated concrete track beams; compacting the soil layer at the installation position of the prefabricated raft foundation; transporting each prefabricated part to a construction site; fixing all prefabricated raft foundations on the treated foundation; mounting prefabricated hollow concrete piers on each prefabricated raft foundation, and connecting the prefabricated raft foundations and the prefabricated hollow concrete piers by adopting sleeve grouting; erecting precast concrete beams on each pair of hollow concrete piers, wherein each pair of hollow concrete piers is connected with the corresponding precast concrete beam by adopting a plug; and the precast concrete track beams are respectively installed on two sides of each precast concrete cross beam, and the precast concrete cross beams are bolted with the precast concrete track beams, so that the installation of the monorail structure is completed.

Description

A construction method of a fully prefabricated concrete freight suspended monorail structure

technical field

The invention relates to the field of rail engineering, in particular to a construction method of a fully prefabricated assembled concrete freight suspended monorail structure.

Background technique

Suspended monorail is a type of monorail that uses only one track instead of the two balanced rails of traditional railways. Suspended monorail is mainly used in densely populated urban areas to carry passengers. Currently, there are few suspended monorails used for freight transportation. For freight suspended monorail railways, which are mostly located in suburbs or rural areas, rather than densely populated urban areas, the piers can be designed to be denser, thereby reducing the span of the track beams and reducing the load on the structure. When the structural load is small, the entire structure can be designed in the form of concrete, and the cost of the track system can be further reduced when the strength and stiffness requirements are met.

In addition, the concrete structures of existing bridges and buildings are mostly constructed by cast-in-place concrete, which has problems such as long construction period, low construction efficiency, and large environmental pollution. Therefore, the present invention proposes a construction method of a fully prefabricated concrete freight suspended monorail structure to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a construction method for a fully prefabricated concrete freight suspended monorail structure.

In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions:

A construction method for a fully prefabricated concrete freight suspended monorail structure, comprising the following steps:

Step 1: prefabricating the required prefabricated parts, wherein the required prefabricated parts include four kinds of prefabricated parts: prefabricated raft foundation, prefabricated hollow concrete bridge pier, prefabricated concrete beam and prefabricated concrete track beam;

Step 2: processing the foundation, and compacting the soil layer at the installation position of the prefabricated raft foundation;

Step 3: transport each of the prefabricated parts to the construction site;

Step 4: Fix all the prefabricated raft foundations on the treated foundation according to the design requirements;

Step 5: Install the required pairs of prefabricated hollow concrete piers on each of the prefabricated raft foundations, and use sleeve grouting to connect the prefabricated raft foundation and the prefabricated hollow concrete piers;

Step 6: erect one of the precast concrete beams on each pair of the hollow concrete piers, and connect each pair of the hollow concrete piers with the corresponding precast concrete beams by plugs;

Step 7: Install the prefabricated concrete rail beams on both sides of each prefabricated concrete beam, and the prefabricated concrete rail beams are bolted to the prefabricated concrete rail beams, thereby completing the fully prefabricated concrete freight suspension type. Installation of monorail structures.

In the present invention, each component of the freight suspended monorail structure is made into prefabricated parts, and then the prefabricated parts are transported to the construction site, and connected and assembled by connecting parts, so that the construction of the entire monorail structure can be quickly completed. This prefabricated construction method not only has higher machining accuracy of each component, but also greatly speeds up the construction progress, saves construction labor costs, and facilitates control of the construction period.

Preferably, in the first step, several protrusions are pre-fabricated on the prefabricated raft foundation, and in the fourth step, the raised part of the prefabricated raft foundation is buried in the soil layer. The protruding structure provided is beneficial to increase the contact area between the prefabricated raft foundation and the soil layer and limit the displacement of the prefabricated raft foundation.

Preferably, in step 1, groove 1 and positioning piles are prefabricated on the prefabricated raft foundation, grouting holes are prefabricated on the prefabricated hollow concrete pier, and in step 5, the The prefabricated hollow concrete bridge pier is sleeved on the positioning pile and installed in the first groove, and concrete is poured through the grouting hole to connect the prefabricated raft foundation and the prefabricated hollow concrete bridge pier.

This connection method reduces the bending moment of the joint surface and improves the mechanical performance of the joint surface. The positioning pile is not only a key part of transmitting internal force, but also helps the rapid hoisting and positioning of prefabricated hollow concrete piers. Speed up construction.

Preferably, in the first step, a sleeve is prefabricated on the prefabricated raft foundation, and in the fifth step, the prefabricated hollow concrete bridge pier is set on the sleeve, and the sleeve is inserted into the sleeve. Concrete is poured to connect the prefabricated raft foundation and the prefabricated hollow concrete pier.

This connection method is convenient for the direct hoisting, positioning and connection of the two prefabricated parts. The sleeve reduces the subsequent pouring slurry leakage, and the construction speed is faster. At the same time, the sleeve is equivalent to increasing the section of the pier bottom, thereby improving the bending resistance of the pier bottom. It also enhances the bending resistance of the joints. The connection structure is simple to operate, easy to control the construction quality, reliable in force, and convenient for construction. It can greatly reduce the workload of on-site welding and concrete pouring, speed up the construction progress, and save engineering costs. .

Preferably, in the first step, a plug is prefabricated on the top of the prefabricated hollow concrete pier, and a second groove is prefabricated at the bottom of the supporting end of the prefabricated concrete beam. In the sixth step, the buffer damping block is prefabricated. First put it above the plug of the prefabricated hollow concrete pier, then align the second groove of the precast concrete beam with the plug to make the two fit together, and finally inject cement mortar or epoxy resin at the joint between the plug and the second groove to connect the The prefabricated hollow concrete bridge pier and the prefabricated concrete beam.

Such a connection method avoids the fatigue problem of welding seam connection, does not have the technical complexity of prestressed anchor bolt connection, does not require a large operating space, saves the cost of additional pre-embedded anchoring system, is very convenient for construction, and greatly saves construction cost. In addition, the buffer damping block provided between the plug type and the second groove can dissipate energy, thereby reducing the dynamic response of the pier column caused by the traveling load and vertical ground vibration. The whole set of connection structure has reasonable structure, reliable force transmission performance, good fatigue resistance, and easy construction, especially suitable for full prefabricated connection.

Preferably, in the sixth step, a wear-resistant plate is installed on the inner wall of the second groove, and then the plug and the second groove are butted together, so as to reduce the moving load of the vehicle and the vertical ground vibration on the prefabricated hollow concrete pier and the prefabricated concrete Wear of the beam.

Preferably, in the first step, a pier web diaphragm is prefabricated on the upper part of the prefabricated hollow concrete pier, and the pier web diaphragm isolates the hollow part of the prefabricated hollow concrete pier to form an upper hollow unit and the lower hollow unit, and the prefabricated hollow concrete pier is divided into the upper pier connecting part and the lower common pier part; in the step 1, plug-type connecting parts are prefabricated at both ends of the prefabricated concrete beam; the step In the sixth step, a buffer damping block is placed in the upper hollow unit of the pier connection, and then the plug connection is inserted into the upper hollow unit of the pier connection, and finally injected into the joint position of the plug connection and the pier connection Cement mortar or epoxy resin, connecting the prefabricated hollow concrete piers and the prefabricated concrete beams.

This connection method avoids the fatigue problem of welding seam connection, does not have the technical complexity of prestressed anchor bolt connection, does not require a large operating space, saves the cost of additional embedded anchorage system, is very convenient for construction, and greatly saves construction costs. . In addition, the buffer damping block provided between the plug-type connection part and the pier web diaphragm can dissipate energy, thereby reducing the dynamic response of the pier column caused by the traveling load and vertical ground vibration. The whole set of connection structure has reasonable structure, reliable force transmission performance, good fatigue resistance and easy construction.

Preferably, in the step 1, holes are pre-machined in the plug-type connection part and the bridge pier connection part, respectively; in the step 6, after the plug-type connection part is inserted into the bridge pier connection part, the holes corresponding to the two are inserted into the pier connection part. Tensioning steel bars are installed in the channel, and tensioning operation is performed to enhance the shear resistance of the connection between the plug-type connection and the bridge pier.

Preferably, in the sixth step, a wear-resistant plate is installed on the side wall of the upper hollow unit of the bridge pier connecting part, and then the buffer damping block and the plug-type connecting part are put into the upper hollow unit, and the wear-resistant plate is used to reduce traffic Wear of precast hollow concrete piers by moving loads and vertical ground motion.

Preferably, in the first step, two rows of bolt holes are prefabricated inside the prefabricated concrete beam, and one row of bolt mounting holes is prefabricated at both ends of the prefabricated concrete rail beam. In the seventh step , hoist the precast concrete rail beam to the corresponding position, pass the bolts through the bolt mounting holes of the precast concrete rail beam and the bolt holes of the precast concrete beam at one end of the precast concrete rail beam, and then put the rubber sheet on the bolts correspondingly, and finally Tighten both ends of the bolt to connect the precast concrete beam and the precast concrete track beam.

This connection method saves the complicated and tedious joint connection process, and avoids the influence of the connecting agent on the construction quality. Only bolts with good shear resistance can be used to meet the requirements of prefabricated concrete rail beams and prefabricated freight suspension monorails. The connection strength of precast concrete beams is required, and the rubber sheet plays a good buffering role. The whole set of device has simple structure, convenient construction and high connection strength, especially convenient for full prefabricated construction, which can greatly speed up the construction progress and save the construction cost.

Preferably, in the first step, a sliding plate is prefabricated on the top plate of the precast concrete rail beam, and the sliding plate adopts a PTFE composite sandwich plate, so that the precast concrete beam and the precast concrete rail beam can be Relatively small displacement sliding occurs to improve the stability of the structure.

Preferably, in the first step, two auxiliary positioning blocks are prefabricated below the prefabricated concrete beam, and at the same time, several bolt holes are fabricated on the prefabricated concrete beam; The two ends of the prefabricated concrete track beam are respectively pre-machined with plywood, and at the same time, corresponding bolt holes are pre-machined on the plywood; in the seventh step, first determine the prefabricated concrete track beam through two auxiliary positioning blocks. In the installation position, after the precast concrete rail beams on both sides of the precast concrete beam are in place, set the sliding bolts that pass through the splint on both sides and the precast concrete beam to connect the precast concrete beam and the precast concrete rail beam.

Compared with the existing connection method, this connection method saves the complicated and tedious joint connection process, and avoids the influence of the connection agent on the construction quality. It only needs to use sliding bolts with good shear resistance, which can meet the requirements of precast concrete. Connection strength requirements for beams and precast concrete track beams. The whole set of device has simple structure, convenient construction and high connection strength, and is especially suitable for fully prefabricated construction.

Preferably, in the seventh step, two nuts are arranged at one end of the sliding bolt to fix the position of the sliding bolt, and only one nut is arranged at the other end of the sliding bolt, and the position of the nut is adjusted so that the There is a gap of 1cm-3cm between the plywood and the precast concrete beam, so as to allow the precast concrete rail beam to have a certain longitudinal slip, thereby improving the stability of the structure.

Preferably, in the seventh step, a wear-resistant plate is firstly installed on the bottom plate of the precast concrete rail beam, and then the precast concrete beam is bolted to the precast concrete rail beam, so as to reduce the impact of traffic on the precast concrete rail. Wear of the beam.

Compared with the prior art, the beneficial effects of the present invention:

In the present invention, each component of the freight suspended monorail structure is made into prefabricated parts, and then the prefabricated parts are transported to the construction site, and connected and assembled by connecting parts, so that the construction of the entire monorail structure can be quickly completed. This prefabricated construction method not only has higher machining accuracy of each component, but also greatly speeds up the construction progress, saves construction labor costs, and facilitates control of the construction period.

Description of drawings:

1 is a three-dimensional schematic diagram of a fully prefabricated concrete freight suspended monorail structure according to the present invention.

2 is a side view of a fully prefabricated concrete freight suspended monorail structure according to the present invention.

FIG. 3 is an exploded view of FIG. 2 .

4 is a front view of a fully prefabricated concrete freight suspended monorail structure according to the present invention.

FIG. 5 is an exploded view of FIG. 4 .

FIG. 6 is a schematic structural diagram of the prefabricated raft foundation according to Embodiment 1 of the present invention.

FIG. 7 is a schematic diagram of the connection between the prefabricated raft foundation and the prefabricated hollow concrete pier according to Embodiment 1 of the present invention.

FIG. 8 is a schematic diagram of the connection between the prefabricated hollow concrete bridge pier and the prefabricated concrete beam according to Embodiment 1 of the present invention.

9 is a schematic diagram of the connection between the precast concrete beam and the precast concrete track beam according to Embodiment 1 of the present invention.

10 is a schematic diagram of the connection between the prefabricated raft foundation and the prefabricated hollow concrete pier according to the second embodiment of the present invention.

11 is a schematic diagram of the connection between the prefabricated hollow concrete bridge pier and the prefabricated concrete beam according to Embodiment 3 of the present invention.

12 is a schematic diagram of the connection between the prefabricated hollow concrete bridge pier and the prefabricated concrete beam according to Embodiment 4 of the present invention.

FIG. 13 is an exploded view of the parts of FIG. 12 .

14 is a schematic diagram of the connection between the precast concrete beam and the precast concrete track beam according to Embodiment 5 of the present invention.

Marked in the figure: 1- prefabricated raft foundation, 11- groove one, 12- positioning pile, 13- protrusion, 14- sleeve, 15- grout hole, 2- precast hollow concrete pier, 21- grout hole , 22-air vent, 23-pier connection, 24-ordinary pier, 25-pier web diaphragm, 26-plug, 3-precast concrete beam, 31-plug connection, 32-auxiliary positioning block, 33-support end, 34-groove two, 35-bolt hole, 4-precast concrete track beam, 41-clamp plate, 42-bolt hole, 43-track beam top plate, 44-track beam side plate, 45-track beam bottom plate , 46-bolt mounting hole, 5-buffer damping block, 6-sliding bolt, 7-wear plate, 8-tensile steel bar, 9-nut, 10-rubber plate, 101-screw hole, 102-bolt, 103- skateboard.

Detailed ways

The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

Example 1

As shown in Figures 1-5, a construction method of a fully prefabricated concrete freight suspended monorail structure includes the following steps:

Step 1: Prefabricate the required prefabricated parts, wherein the required prefabricated parts include four kinds of prefabricated parts: prefabricated raft foundation 1, prefabricated hollow concrete bridge pier 2, prefabricated concrete beam 3 and prefabricated concrete rail beam 4. specific:

Several protrusions 13, grooves 11 and positioning piles 12 are pre-processed on the prefabricated raft foundation 1 (as shown in Figures 6 and 7);

A grouting hole 21 and an exhaust hole 22 are prefabricated at the lower part of the prefabricated hollow concrete bridge pier 2 (as shown in FIG. 6 ), and a pier web diaphragm 25 is prefabricated at the upper part of the prefabricated hollow concrete bridge pier 2 . The pier web diaphragm 25 isolates the hollow part of the prefabricated hollow concrete pier 2 to form an upper hollow unit and a lower hollow unit, and separates the prefabricated hollow concrete pier 2 into the upper pier connection part 23 and the lower ordinary pier part. 24 (as shown in Figure 7);

Plug connectors 31 are pre-fabricated at both ends of the precast concrete beam 3 , two auxiliary positioning blocks 32 are pre-fabricated below the precast concrete beam 3 , and at the same time, the prefabricated concrete beam 3 is prefabricated Several bolt holes 42;

The prefabricated concrete rail beam 4 is prefabricated, including a rail beam top plate 43 and a rail beam side plate 44 arranged oppositely, and a horizontal rail beam bottom plate 45 is respectively connected below each rail beam side plate 44. There is a gap between the rail beam bottom plate 45, and the rail beam top plate 43, the rail beam side plate 44 and the rail beam bottom plate 45 are integrally formed structural parts, and then the two ends of the prefabricated concrete rail beam 4 are respectively prefabricated. 41. At the same time, corresponding bolt holes 42 are pre-machined on the clamping plate 41 (as shown in FIG. 2 ).

Step 2: Treating the foundation, and compacting the soil layer at the installation position of the prefabricated raft foundation 1 .

Step 3: transport each of the prefabricated parts to the construction site.

Step 4: Fix all the prefabricated raft foundations 1 on the treated foundation according to design requirements, and embed the protrusions 13 of the prefabricated raft foundation 1 into the soil layer.

Step 5: Install the required pairs of the prefabricated hollow concrete piers 2 on each of the prefabricated raft foundations 1, and the prefabricated raft foundation 1 and the prefabricated hollow concrete piers 2 are connected by sleeve grouting . Specifically, as shown in FIG. 7 , the prefabricated hollow concrete bridge pier 2 is sleeved on the positioning pile 12 and set in the groove one 11, and concrete is poured through the grouting hole 21 to connect the prefabricated raft. The slab foundation 1 and the prefabricated hollow concrete pier 2 are also provided with an exhaust hole 22 above the grouting hole 21 to avoid unreliable connection due to difficulty in grouting.

Step 6: erect one of the precast concrete beams 3 on each pair of the hollow concrete piers 2 , and connect each pair of the hollow concrete piers 2 with the corresponding precast concrete beams 3 by plugs. Specifically, as shown in FIG. 8 , the wear-resistant plate 7 is installed on the side wall of the upper hollow unit of the bridge pier connecting portion 23 , the buffer damping block 5 is put into the upper hollow unit, and then the plug-type connecting portion 31 is inserted into the bridge pier connection Finally, cement mortar or epoxy resin is injected into the joint position of the plug connection part 31 and the pier connection part 23 to connect the prefabricated hollow concrete pier 2 and the prefabricated concrete beam 3 .

Step 7: Install the precast concrete rail beams 4 on both sides of each of the precast concrete beams 3 respectively, and the precast concrete rail beams 3 and the precast concrete rail beams 4 are bolted. Specifically, as shown in Figure 9 As shown, the installation position of the precast concrete rail beam 4 is first determined by two auxiliary positioning blocks 32, and after the precast concrete rail beams 4 on both sides of the precast concrete beam 3 are in place, the clamping plates 41 on both sides are installed. and the sliding bolts 6 of the precast concrete beam 3 to connect the precast concrete beam 3 and the precast concrete track beam 4 . Two nuts 9 are arranged at one end of the sliding bolt 6 to fix the position of the sliding bolt 6, and only one nut 9 is arranged at the other end of the sliding bolt 6, and by adjusting the position of the nut 9, the clamping plate 41 and the There is a gap of 1 cm-3 cm between the precast concrete beams 3 .

Example 2

As shown in FIG. 10 , the difference between this embodiment and Embodiment 1 is that in step 1, a sleeve 14 is pre-fabricated on the prefabricated raft foundation 1, and in step 5, the The prefabricated hollow concrete bridge pier 2 is arranged on the sleeve 14 , and concrete is poured into the sleeve 14 to connect the prefabricated raft foundation 1 and the prefabricated hollow concrete bridge pier 2 .

In step 1, the lower part of the sleeve 14 is pre-fabricated with a slurry leakage hole 15. With this structure, after the sleeve 14 is connected to the prefabricated hollow concrete pier 2, the subsequently poured concrete can enter through the slurry leakage hole 15. The hollow part of the prefabricated hollow concrete bridge pier 2 forms a limit pin structure in the hollow part, which further optimizes the stress of the prefabricated hollow concrete bridge pier 2 and improves the connection reliability.

Example 3

As shown in FIG. 11 , the difference between this embodiment and Embodiment 1 is that in the first step, holes are pre-machined in the plug-type connecting part 31 and the bridge pier connecting part 23 respectively, and in the sixth step , after the plug-type connection part 31 is inserted into the bridge pier connection part 23, the tensioning steel bar 8 is installed in the corresponding hole of the two, and the tensioning operation is performed.

Example 4

As shown in FIGS. 12-13 , the difference between this embodiment and Embodiment 1 is that in step 1, a plug 26 is prefabricated on the top of the prefabricated hollow concrete pier 2 , and a plug 26 is prefabricated on the top of the prefabricated concrete beam 3 . A second groove 34 is pre-machined at the bottom of the support end 33. In the sixth step, a wear-resistant plate 7 is installed on the inner wall of the second groove 34, and the buffer damping block 5 is first placed above the plug 26 of the prefabricated hollow concrete pier 2 , and then align the groove two 34 of the precast concrete beam 3 with the plug 26 to make the two fit, and finally inject cement mortar or epoxy resin at the joint position of the plug 26 and the groove two 34 to connect the prefabricated hollow concrete piers 2 and the precast concrete beam 3.

Example 5

As shown in FIG. 14 , in the first step, two rows of bolt holes 35 are pre-machined inside the precast concrete beam 3 , and a row of bolt mounting holes are pre-machined at both ends of the precast concrete rail beam 4 respectively. 46. In the seventh step, the precast concrete rail beam 4 is hoisted to the corresponding position, and the bolts 102 are passed through the bolt mounting holes 46 of the precast concrete rail beam 4 and the bolts of the precast concrete beam 3 at one end of the precast concrete rail beam 4. Hole 35, then the rubber plate 10 is correspondingly sleeved on the bolt 102 (the rubber plate 10 is pre-machined with screw holes 101), and finally the two ends of the bolt 102 are fastened to connect the prefabricated concrete beam 3 and the prefabricated concrete rail beam 4 .

Preferably, a sliding plate 103 is prefabricated on the top plate of the prefabricated concrete rail beam 4, and the sliding plate 103 adopts a PTFE composite sandwich plate, so that the gap between the prefabricated concrete beam 3 and the prefabricated concrete rail beam 4 can occur. Relatively small displacement sliding to improve the stability of the structure

The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although the present specification has been described in detail with reference to the above-mentioned embodiments, the present invention is not limited to the above-mentioned specific embodiments. Therefore, Any modification or equivalent replacement of the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. a construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure, is characterized in that, comprises the following steps: Step 1: prefabricating the required prefabricated parts, wherein the required prefabricated parts include a prefabricated raft foundation (1), a prefabricated hollow concrete bridge pier (2), a prefabricated concrete beam (3) and a prefabricated concrete rail beam (4). a prefab; Step 2: treating the foundation, and compacting the soil layer at the installation position of the prefabricated raft foundation (1); Step 3: transport each of the prefabricated parts to the construction site; Step 4: Fix all the prefabricated raft foundations (1) on the treated foundation according to the design requirements; Step 5: Install the required pairs of the prefabricated hollow concrete piers (2) on each of the prefabricated raft foundations (1), the prefabricated raft foundation (1) and the prefabricated hollow concrete piers (2) ) is connected by sleeve grouting; Step 6: erect one of the precast concrete beams (3) on each pair of the hollow concrete piers (2), between each pair of the hollow concrete piers (2) and the corresponding precast concrete beams (3) Use plug connection; Step 7: Install the precast concrete rail beams (4) on both sides of each of the precast concrete beams (3) respectively, and the precast concrete rail beams (3) and the precast concrete rail beams (4) are bolted. connected to complete the installation of the fully prefabricated concrete freight suspended monorail structure. 2. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1, wherein in the step 1, several prefabricated raft foundations (1) are prefabricated There are protrusions (13), and in the fourth step, the protrusions (13) of the prefabricated raft foundation (1) are buried in the soil layer. 3. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1, wherein in the step 1, a concave is prefabricated on the prefabricated raft foundation (1). Slot one (11) and positioning piles (12), prefabricated grouting holes (21) are prefabricated on the prefabricated hollow concrete bridge pier (2), and in the fifth step, the prefabricated hollow concrete bridge pier (2) Set on the positioning pile (12) and set in the groove one (11), pour concrete from the grouting hole (21), and connect the prefabricated raft foundation (1) and the prefabricated hollow concrete Bridge pier (2). 4. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1, characterized in that, in the step 1, prefabricated raft foundations (1) are prefabricated out of the casing cylinder (14), and in the fifth step, the prefabricated hollow concrete pier (2) is set in the sleeve (14), concrete is poured into the sleeve (14), and the prefabricated raft is connected A foundation (1) and the prefabricated hollow concrete pier (2). 5 . The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1 , wherein in the step 1, a prefabricated hollow concrete pier (2) is prefabricated on the top of the pier (2). 6 . For the plug (26), a second groove (34) is prefabricated at the bottom of the supporting end (33) of the precast concrete beam (3). In the sixth step, the buffer damping block (5) is first placed in the precast hollow concrete Above the plug (26) of the bridge pier (2), align the second groove (34) of the precast concrete beam (3) with the plug (26), so that the two are assembled, and finally place the plug (26) and the second groove (34) Cement mortar or epoxy resin is injected into the joint position of ) to connect the prefabricated hollow concrete pier (2) and the prefabricated concrete beam (3). 6. The construction method of a fully prefabricated concrete freight suspended monorail structure according to claim 5, wherein in the step 6, a wear-resistant plate is installed on the inner wall of the second groove (34). (7), and then connect the plug (26) to the second groove (34). 7. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1, wherein in the step 1, a prefabricated hollow concrete pier (2) is prefabricated on the upper part of the bridge pier (2). A pier web diaphragm (25), the pier web diaphragm (25) isolates the hollow part of the prefabricated hollow concrete pier (2) to form an upper hollow unit and a lower hollow unit, and separates the prefabricated hollow concrete pier (2) ) is divided into an upper pier connecting part (23) and a lower common pier part (24); in the step 1, a plug-type connecting part (31) is prefabricated at both ends of the precast concrete beam (3); In the sixth step, a buffer damping block (5) is placed in the upper hollow unit of the bridge pier connection part (23), and then the plug-type connection part (31) is inserted into the upper hollow unit of the bridge pier connection part (23), Finally, cement mortar or epoxy resin is injected into the joint position of the plug-type connection part (31) and the bridge pier connection part (23) to connect the prefabricated hollow concrete bridge pier (2) and the prefabricated concrete beam (3). 8. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 7, wherein in the step 1, in the plug-type connection part (31) and the bridge pier connection part ( 23) respectively prefabricated the holes, in the step 6, after the plug-type connecting part (31) is inserted into the pier connecting part (23), the tensioning steel bars (8) are installed in the corresponding holes of the two, and tensioning is carried out. pull operation. 9. The construction method of a fully prefabricated concrete freight suspended monorail structure according to claim 1, wherein in the step 1, two prefabricated concrete beams (3) are prefabricated inside. A row of bolt holes (35), a row of bolt mounting holes (46) are prefabricated at both ends of the precast concrete rail beam (4), respectively, and in the seventh step, the precast concrete rail beam (4) is hoisted to the corresponding Position the bolts (102) through the bolt mounting holes (46) of the precast concrete rail beam (4) and the bolt holes (35) of the precast concrete beam (3) at one end of the precast concrete rail beam (4), and then The rubber plate (10) is correspondingly sleeved on the bolt (102), and finally both ends of the bolt (102) are fastened to connect the prefabricated concrete beam (3) and the prefabricated concrete rail beam (4). 10. The construction method of a fully prefabricated prefabricated concrete freight suspended monorail structure according to claim 1, wherein in the step 1, two prefabricated concrete beams (3) are prefabricated below. at the same time, several bolt holes (42) are processed on the precast concrete beam (3); in step 1, two ends of the precast concrete rail beam (4) are respectively The plywood (41) is prefabricated, and at the same time, corresponding bolt holes (42) are prefabricated on the plywood (41); in the seventh step, the precast concrete is first determined by two auxiliary positioning blocks (32). The installation position of the rail beam (4), after the precast concrete rail beams (4) on both sides of the precast concrete beam (3) are in place, the installation position of the precast concrete rail beam (4) passing through the splint (41) on both sides and the precast concrete beam (3) is arranged. Sliding bolts (6) connect the prefabricated concrete beams (3) and the prefabricated concrete track beams (4).

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