Railway frame bridge construction structure and method thereof

Abstract

The invention belongs to the technical field of frame culvert side position pushing, and particularly relates to a railway frame bridge construction structure and a method thereof.The railway frame bridge construction structure comprises a cast-in-place frame culvert and a pushing mechanism, the pushing mechanism comprises a plurality of first telescopic cylinders fixed to the surface of the frame culvert and a plurality of second telescopic cylinders, all the first telescopic cylinders are horizontally arranged, and all the second telescopic cylinders are horizontally arranged; the working ends of the first telescopic cylinders move towards the end away from the bridge, retaining walls opposite to the working ends of the first telescopic cylinders are arranged on one side of the frame culvert at intervals, the second telescopic cylinders are opposite to the first telescopic cylinders, and the number and the positions of the second telescopic cylinders are in one-to-one correspondence with those of the first telescopic cylinders. The working end of each second telescopic cylinder is connected with a guide wheel set facing the bridge, the guide wheel sets are arranged on the surface of the side, close to the bridge, of the frame culvert, and by the adoption of the technical scheme, the problems that in the pushing process of an existing frame culvert, time and labor are wasted, and efficiency is low can be effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of frame culvert side-pushing, and in particular relates to a railway frame bridge construction structure and a method thereof. Background Art

[0002] In the construction of transportation infrastructure such as railways and highways, it is often necessary to add frame culvert structures under existing bridges to meet the needs of drainage, pipeline crossing or traffic diversion. Traditional frame culvert construction methods mainly include open cut and cast-in-place and jacking construction. However, when constructing under bridges on existing operating lines, these methods have obvious limitations. Among them, the open cut and cast-in-place method requires interrupting traffic on the bridge, which has a significant impact on the operation of the existing line. It also requires a large amount of excavation and support work, a long construction period, and high safety risks. Although the traditional jacking method can reduce the impact on the superstructure, there are problems such as excessive jacking force and directional deviation during the jacking process. Especially under soft soil conditions, the friction between the frame culvert and the soil often makes jacking difficult, requiring the establishment of a large number of relay rooms, and low construction efficiency. For example, a Chinese patent provides a method for rapidly pushing and moving the entire frame bridge laterally (patent announcement number: CN104612056A). The traditional pushing method is used to rapidly move the entire frame bridge laterally, thereby minimizing the height of the bridge structure across the railway and avoiding the use of steel beams or steel beams with the same small height. This reduces the workload of subsequent railway operation and maintenance and meets safety, environmental protection, and energy-saving requirements.

[0003] Although the above technical solution provides a method for rapid jacking and transverse movement of a frame bridge, in the actual construction process, during the construction of the line where the Tangcun line is connected to the Changfu line project, we need to jack the frame culvert under the existing bridge. The existing bridge is completed before the railway line is constructed, and the newly connected railway line needs to pass under the bridge, and the existing bridge is fixed above the ground through piers. In the process of jacking the frame culvert, there is no need to dig and jack at the same time. At the same time, since there are multiple railway lines designed, it is necessary to jack the frame culvert under each bridge segment at the same time. The use of traditional jacking technology is time-consuming and labor-intensive, and does not have much reference value. Therefore, there is an urgent need for a construction method that can quickly jack the frame culvert under the existing bridge. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a railway frame bridge construction structure and method thereof, which are used to solve the problem that the current frame culvert is time-consuming, labor-intensive and inefficient during the jacking process.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A railway frame bridge construction structure includes a bridge, a frame culvert cast in situ on one side of the bridge, and a pushing mechanism arranged on the surface of the frame culvert, the pushing mechanism including a plurality of first telescopic cylinders fixed to the surface of one side of the frame culvert and a plurality of second telescopic cylinders fixed to the surface of the other side of the frame culvert, wherein the first telescopic cylinders are respectively arranged at intervals along the length direction of the frame culvert, the first telescopic cylinders are arranged horizontally, and the working end of each first telescopic cylinder moves toward the end away from the bridge, a retaining wall is arranged opposite to the working end of each first telescopic cylinder on one side of the frame culvert, the retaining wall is parallel to the bridge, and the travel path of the frame culvert under the push of each first telescopic cylinder is perpendicular to the length of the bridge; the second telescopic cylinders are arranged opposite to the first telescopic cylinders, and the number and position of each second telescopic cylinder correspond one-to-one to the first telescopic cylinders, the working end of each second telescopic cylinder is connected to a guide wheel group facing the bridge, the guide wheel group is arranged on the side of the frame culvert close to the bridge, and when the working end of the second telescopic cylinder is extended, it synchronously drives the guide wheel group to rotate and lifts the frame culvert upward for a distance in the form of abutting the ground.

[0007] Furthermore, the guide wheel group includes a first support plate fixed to the surface of one side of the frame culvert, two second support plates vertically fixed to the surface of the first support plate, and a first rotating block hinged between the two second support plates. The two second support plates are symmetrically arranged about the axis corresponding to the length direction of the second telescopic cylinder. One end of the first rotating block is hinged to the corresponding second telescopic cylinder working end, and the other end is hinged to the guide wheel, wherein the axial center distance between the rotation center of the first rotating block and the hinge point of the second telescopic cylinder is greater than the axial center distance between the rotation center of the first rotating block and the hinge point of the guide wheel, and the end of each second telescopic cylinder away from the bridge is hinged to the surface of the frame culvert and rotates in a vertical plane.

[0008] Furthermore, a retaining ring coaxially arranged therewith is fixed to one end face of each guide wheel, and the diameter of the retaining ring is larger than that of the guide wheel.

[0009] Furthermore, the working ends of adjacent multiple first telescopic cylinders are commonly fixed with a connecting frame, each of the connecting frames is horizontally arranged along the length direction of the frame culvert, and the surface of each connecting frame is hinged with multiple support wheel groups that move in a vertical plane, and the position and number of each support wheel group correspond one-to-one with the first telescopic cylinder, and the support wheel group includes a second rotating block elastically hinged on the surface of one side of the connecting frame and a support wheel hinged on the surface of the second rotating block, wherein, the second rotating block is vertically arranged at one end close to the retaining wall and abuts against the adjacent connecting frame surface, and the other end faces the ground and is hinged to the support wheel, and the length between the rotation center of the second rotating block and its vertical surface is greater than the length between the rotation center of the second rotating block and the support wheel, the number and position of each guide wheel and the support wheel correspond one-to-one, and the axes of the corresponding guide wheels and support wheels are on the same straight line.

[0010] Furthermore, a side surface of the connecting frame close to the retaining wall is provided with a plurality of placement grooves for placing the vertical surface of the second rotating block, and when the second connecting block cooperates with the placement grooves, one side surface of the connecting frame is flush with the vertical surface of the second connecting block and they jointly abut against the retaining wall.

[0011] Furthermore, multiple first telescopic cylinders are commonly connected to a first block at one end away from the retaining wall, and the first blocks are all fixedly connected to the frame culvert. Multiple second telescopic cylinders are commonly hinged to a second block at one end away from the bridge, and the second blocks are all fixedly connected to the frame culvert. The number of first blocks and second blocks corresponds to one another and are parallel to each other. Multiple auxiliary connecting blocks are commonly fixed between each first block and the corresponding second block, and the two ends of the auxiliary connecting blocks are respectively abutted against the surfaces of the corresponding first block and second block and are perpendicular to each other. Each of the auxiliary connecting blocks is arranged at intervals along the length direction of the frame culvert.

[0012] A railway frame bridge construction method, applied in a railway frame bridge construction device, comprises the following implementation steps:

[0013] Step S1: Level the construction site and determine the size and pushing direction of the frame culvert;

[0014] Step S2: A frame culvert is fabricated on-site on one side of the bridge. During the casting process of the frame culvert, multiple through-filling holes are reserved at the bottom of the frame culvert. During the fabrication of the frame culvert, a retaining wall is constructed simultaneously and the ground along the route is reinforced.

[0015] Step S3: When strengthening the ground, first, the surface along the route of the frame culvert is excavated to form a foundation pit, and a plurality of vertical support columns are excavated and cast in the foundation pit, wherein the diameter of the support columns is smaller than the filling hole, wherein a plurality of adjacent support columns are commonly fixed with a plurality of first support blocks and second support blocks arranged in a crisscross pattern, wherein the first support blocks are arranged parallel to each other along the length direction of the frame culvert, and the second support blocks are arranged parallel to each other along the route of the frame culvert, and the number and position of the second support blocks correspond to the number of the guide wheels, and the upper surface of the second support blocks is flush with the ground; wherein, the top of the support column located below the bridge is reserved with a plurality of threaded steel bars protruding from its surface;

[0016] Step S4: After the frame culvert is maintained, the pushing mechanism, guide wheel assembly, first stopper, and second stopper are installed at corresponding positions on the surface of the frame culvert. After installation, the culvert is debugged and the position of each second support block is calibrated to ensure the accuracy of the travel route.

[0017] and actuating the guide wheels so that the frame culvert is lifted up for a certain distance.

[0018] Step S6: When the working end of each first telescopic cylinder is extended to the maximum stroke, the working end of each second telescopic cylinder is first controlled to reset, so that each guide wheel no longer contacts the surface of the second support block after rotating a certain angle, and one end surface of the frame culvert drops and abuts each second support block. Then, each first telescopic cylinder is controlled to reset, so that each support wheel no longer contacts the ground after rotating a certain angle, and the other end surface of the frame culvert drops and contacts the ground. At this time, the frame culvert is fixed in the current position under the action of its own weight. Then, abutment blocks are placed between each connecting frame and the retaining wall, and then the corresponding processes in steps S5 and S6 are repeated until the frame culvert is pushed to the bottom of the bridge. At the same time, the multiple filling holes reserved on the surface of the frame culvert correspond to the multiple support columns one by one.

[0019] Step S7: dismantle the components such as the pushing mechanism, the guide wheel assembly, the first stopper, and the second stopper installed on the surface of the frame culvert one by one, then tie steel bars in each filling hole and connect them with the threaded steel bars, and then pour concrete into each filling hole until the concrete fills the foundation pit and all the filling holes;

[0020] Step S8: remove the retaining wall, cure the concrete in the filling hole, clean the surrounding ground, and complete the jacking of the frame culvert.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention converts the sliding friction between the frame culvert and the ground into rolling friction by cooperating with the second telescopic cylinder and the guide wheel assembly, thereby reducing the jacking resistance, alleviating the pushing burden of the first telescopic cylinder, shortening the time of each jacking stroke, and significantly improving construction efficiency. At the same time, the guide wheel assembly adopts an "L"-shaped first rotating block to form a labor-saving lever structure, which amplifies the torque of the second telescopic cylinder, ensures a smooth jacking process of the frame culvert, and improves the overall stability during jacking. Through the coordinated action of the support wheel assembly and the guide wheel assembly, both ends of the frame culvert are lifted off the ground, achieving full-section rolling friction, further reducing friction, accelerating the jacking speed, and reducing equipment load.

[0023] 2. The symmetrically arranged retaining ring cooperates with the second support block on the ground, effectively limiting the travel route of the frame culvert and ensuring the accuracy of the frame culvert during the jacking process; the supporting piles and pre-buried threaded steel bars ensure the connection between the frame culvert and it after jacking, improving the integrity of the structure. The jacking mechanism adopts bolt connection for easy installation and disassembly; the segmented jacking combined with the filling hole pouring simplifies the later structural fixing process, shortens the construction period and ensures the construction quality.

[0024] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0026] Figure 1 This is a schematic diagram of the frame culvert and bridge structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the frame culvert structure of the present invention;

[0028] Figure 3 This is a side view of the frame culvert and bridge structure of the present invention;

[0029] Figure 4 for Figure 1 A in the middle is an enlarged schematic diagram;

[0030] Figure 5 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0031] Figure 6 for Figure 2 Enlarged schematic diagram at point C in the middle;

[0032] Figure 7 for Figure 3 The enlarged schematic diagram of point D in the middle;

[0033] Figure 8 It is a schematic diagram of the structure of the frame culvert after top pushing in the present invention.

[0034] The following are marked in the accompanying drawings:

[0035] 1 Bridge, 2 Frame culvert, 3 First telescopic cylinder, 4 Second telescopic cylinder, 5 Retaining wall, 6 Guide wheel group, 601 First support plate, 602 Second support plate, 603 First rotating block, 604 Guide wheel, 605 Retaining ring, 7 Connecting frame, 8 Support wheel group, 801 Second rotating block, 802 Support wheel, 9 Placement groove, 10 First stop block, 11 Second stop block, 12 Auxiliary connecting block, 13 Filling hole, 14 Foundation pit, 15 Support column, 16 First support block, 17 Second support block, 18 Threaded steel bar, 19 Abutment block, 20 Auxiliary support plate. DETAILED DESCRIPTION

[0036] like Figures 1 to 8 As shown,

[0037] A railway frame bridge construction structure includes an existing bridge 1, a frame culvert 2 cast in situ on one side of the bridge 1, and a jacking mechanism arranged on the surface of the frame culvert 2, wherein the frame culvert 2 includes two symmetrically arranged culverts, and the jacking mechanism includes three first telescopic cylinders 3 fixed on the surfaces of the two culverts of the frame culvert 2 and three second telescopic cylinders 4 arranged opposite to the first telescopic cylinders 3 (the first telescopic cylinders 3 and the second telescopic cylinders 4 are both hydraulically operated), wherein the first telescopic cylinders 3 are evenly spaced along the length direction of the frame culvert 2, and the surface of the frame culvert 2 is pre-embedded with bolts that match the first telescopic cylinders 3, and the first telescopic cylinders 3 are all horizontally arranged, and the working ends of the first telescopic cylinders 3 move toward the end away from the bridge 1. 2 is separated by a retaining wall 5 on one side thereof which is arranged opposite to the working end of each first telescopic cylinder 3, the length direction of the retaining wall 5 is parallel to the length direction of the bridge 1, and the travel route of the frame culvert 2 under the push of each first telescopic cylinder 3 is perpendicular to the length direction of the bridge 1; the number and position of each second telescopic cylinder 4 correspond one to one to the first telescopic cylinder 3, and the relatively arranged second telescopic cylinder 4 and first telescopic cylinder 3 are located on the same axis, and the working end of each second telescopic cylinder 4 is connected to a guide wheel group 6 facing the bridge 1, and the guide wheel group 6 is arranged on the side surface of the frame culvert 2 close to the bridge 1, and when the working end of the second telescopic cylinder 4 is extended, it synchronously drives the guide wheel group 6 to rotate and lifts the frame culvert 2 upward for a distance in the form of abutting the ground.

[0038] As shown in the figure, when it is necessary to push the frame culvert 2 toward the bridge 1, the working ends of the second telescopic cylinders 4 are controlled to extend synchronously first, and the extension will drive the guide wheel group 6 to rotate, so that the guide wheel group 6 after rotating to a certain angle contacts the ground and lifts the frame culvert 2 upward for a distance. At this time, the end of the frame culvert 2 close to the bridge 1 is spaced apart from the ground under the support of the guide wheel groups 6, and the sliding friction between the frame culvert 2 and the ground is converted into rolling friction, which effectively reduces the friction between the frame culvert 2 and the ground; then the working ends of the first telescopic cylinders 3 are synchronously controlled to extend toward the retaining wall 5. When the working ends of the first telescopic cylinders 3 abut the retaining wall 5, the frame culvert 2 will be pushed to move toward the bridge 1. Since the end of the frame culvert 2 close to the bridge 1 is supported by the guide wheel groups 6 rolls on the ground, thereby effectively reducing the pushing torque and burden of each first telescopic cylinder 3, and also reducing the time required for pushing the frame culvert 2, thereby improving construction efficiency; when the working end of each first telescopic cylinder 3 is extended to the maximum stroke, the frame culvert 2 stops moving. At this time, the working end of each second telescopic cylinder 4 is first controlled to reset, and at the same time, the guide wheel group 6 is driven to no longer abut against the ground, and the raised end of the frame culvert 2 is lowered and in contact with the ground, and then the working end of each first telescopic cylinder 3 is controlled to reset, and an abutment block 19 is placed between the working end of each first telescopic cylinder 3 and the retaining wall 5, and then the working ends of each second telescopic cylinder 4 and each first telescopic cylinder 3 are controlled to extend in turn, and continue to push the frame culvert 2 toward the direction of the bridge 1, and the above steps are repeated to push the frame culvert 2 to the bottom of the bridge 1;

[0039] Through the cooperation between each second telescopic cylinder 4 and the guide wheel group 6, the sliding friction between one end of the frame culvert 2 and the ground is converted into rolling friction, which can effectively shorten the time required for each pushing stroke. When the frame culvert 2 is pushed from the starting end to the bottom of the bridge 1, the time saved in each pushing stroke is accumulated, which undoubtedly effectively improves the pushing efficiency of the frame culvert 2.

[0040] In this embodiment, an auxiliary support plate 20 is fixed to a side surface of the frame culvert 2 facing the bridge 1 by bolts and nuts. The guide wheel group 6 includes a first support plate 601 fixed to a side surface of the frame culvert 2, two second support plates 602 vertically welded to the surface of the first support plate 601, and a first rotating block 603 hinged between the two second support plates 602. The first support plate 601 is fixedly connected to the auxiliary support plate 20 by bolts and nuts. The two second support plates 602 are symmetrically arranged about the axis in the longitudinal direction of the corresponding second telescopic cylinder 4. One end of the first rotating block 603 is hinged to the working end of the corresponding second telescopic cylinder 4, and the other end is hinged to the guide wheel 604. The vertical cross-section of the first rotating block 603 is "L"-shaped. The axial center distance between the rotation center of the first rotating block 603 and the hinged connection of the second telescopic cylinder 4 is greater than the axial center distance between the rotation center of the first rotating block 603 and the hinged connection of the guide wheel 604. The end of each second telescopic cylinder 4 away from the bridge 1 is hinged to the surface of the frame culvert 2 and rotates in a vertical plane.

[0041] As shown in the figure, bolts that match the auxiliary support plate 20 are pre-embedded on the surface of the side of the frame culvert 2 close to the bridge 1, and through holes that match the pre-embedded bolts are opened on the surface of the auxiliary support plate 20, and bolts that match the first support plates 601 are vertically welded and fixed on the surface of the auxiliary support plate 20; when it is necessary to lift the end surface of the frame culvert 2 close to the bridge 1 upward and away from the ground, the corresponding working end of the second telescopic cylinder 4 is controlled to extend, which will simultaneously drive one end of the first rotating block 603 to rotate, and the end of the first rotating block 603 away from the second telescopic cylinder 4 will move towards the ground The first rotating block 603 rotates in the plane direction until the guide wheel 604 contacts the ground and lifts the frame culvert 2 for a distance. Since the axial center distance between the rotation center of the first rotating block 603 and the hinge of the second telescopic cylinder 4 is larger than the axial center distance between the rotation center of the first rotating block 603 and the hinge of the guide wheel 604, a force-saving lever is formed. Therefore, the torque of the second telescopic cylinder 4 can be effectively amplified, so that the first rotating block 603 can lift the frame culvert 2 through the guide wheel 604 after rotation, which effectively improves the stability of the frame culvert 2 when being lifted, and also improves the efficiency of the frame culvert 2 when being pushed toward the bridge 1.

[0042] In this embodiment, one end face of each guide wheel 604 is integrally formed with a retaining ring 605 coaxially arranged therewith, and the diameter of the retaining ring 605 is larger than that of the guide wheel 604, wherein the three retaining rings 605 in each of the two culverts are symmetrically arranged about the axis in the width direction of the frame culvert 2.

[0043] As shown in the figure, the three retaining rings 605 mirror-set on the frame culvert 2 can effectively guide the travel route of the frame culvert 2 when cooperating with the second support block 17 subsequently installed on the ground to prevent deviation during the jacking process.

[0044] In this embodiment, the working ends of the three adjacent first telescopic cylinders 3 in the same culvert are commonly fixed with a connecting frame 7, and the connecting frame 7 is fixedly connected to each first telescopic cylinder 3 by bolts and nuts. Each of the connecting frames 7 is horizontally arranged along the length direction of the frame culvert 2, and the surface of each connecting frame 7 is hinged with three support wheel groups 8 that move in the vertical plane. The position and number of each support wheel group 8 correspond to the first telescopic cylinder 3 one by one. The support wheel group 8 includes a second rotating block 801 elastically hinged on the lower surface of the connecting frame 7 and a support wheel 802 hinged at the lower end of the second rotating block 801. (A torsion spring is provided between the second rotating block 801 and the connecting block, which is not shown in the figure), wherein the second rotating block 801 is vertically placed at one end close to the retaining wall 5 and abuts against the surface of the adjacent connecting frame 7, and the other end faces the ground and is hinged to the support wheel 802, and the length between the rotation center of the second rotating block 801 and its vertical surface is greater than the length between the rotation center of the second rotating block 801 and the support wheel 802, the number and position of each guide wheel 604 and the support wheel 802 correspond one to one, and the axes of the corresponding guide wheels 604 and support wheels 802 are all on the same straight line.

[0045] As shown in the figure, when the connecting frame 7 does not abut against the surface of the retaining wall 5, the vertical end of each second rotating block 801 is away from the connecting frame 7 and is tilted; when the working end of each first telescopic cylinder 3 drives the connecting frame 7 to move toward the retaining wall 5 and abut against each other, the vertical end of each second rotating block 801 first abuts against the surface of the retaining wall 5, and then the vertical end of the second rotating block 801 rotates toward the connecting frame 7. During the rotation of the second rotating block 801, it will synchronously drive the supporting wheel 802 to rotate toward the ground until each supporting force abuts against the ground and lifts the frame culvert 2 upward for a distance. At this time, the connecting frame 7 and the retaining wall 5 simultaneously abut against the surfaces on both sides of the vertical end of the second rotating block 801, so that each supporting wheel 802 keeps When the frame culvert 2 is jacked up, the sliding friction between the end face of the frame culvert 2 close to the retaining wall 5 and the ground is converted into rolling friction. Through the cooperation between each guide wheel 604 and each support wheel 802, the lower surface of the frame culvert 2 is separated from the ground, which further reduces the friction between the frame culvert 2 and the ground, indirectly improves the construction speed of each jacking process of the frame culvert 2, and greatly shortens the time required for the jacking process of the frame culvert 2; at the same time, because the length between the rotation center of the second rotating block 801 and its vertical surface is greater than the length between the rotation center of the second rotating block 801 and the support wheel 802, a force-saving lever is formed, which effectively improves the stability of each second rotating block 801 and the support wheel 802 during movement.

[0046] In this embodiment, three placement grooves 9 for placing the vertical surface of the second rotating block 801 are provided on one side surface of each connecting frame 7 close to the retaining wall 5, and when the second connecting block is matched with the placement groove 9, one side surface of the connecting frame 7 is flush with the vertical surface of the second connecting block and jointly abuts the retaining wall 5.

[0047] As shown in the figure, when the connecting frame 7 and the retaining wall 5 simultaneously abut the surface of the vertical end of the second rotating block 801, the surface of the vertical end of the second rotating block 801 is located in the placement groove 9 and is flush with the surface of the connecting frame 7. The connecting frame 7 and the second rotating block 801 jointly abut the surface of the retaining wall 5, which can effectively disperse the pressure between each second rotating block 801 and the retaining wall 5, thereby improving the stability of the frame culvert 2 during the pushing process.

[0048] In this embodiment, the ends of the multiple first telescopic cylinders 3 away from the retaining wall 5 are commonly connected to the first stop block 10, and the first stop blocks 10 are fixedly connected to the surface of the frame culvert 2 by bolts and nuts. The ends of the multiple second telescopic cylinders 4 away from the bridge 1 are commonly hinged to the second stop block 11, and the second stop blocks 11 are fixedly connected to the frame culvert 2 by bolts and nuts (the surface of the frame culvert 2 is pre-embedded with threaded steel bars 18 that match the first stop blocks 10 and the second stop blocks 11), and the number of the first stop blocks 10 and the second stop blocks 11 corresponds to each other and are parallel to each other. Three auxiliary connecting blocks 12 are commonly fixed between each first stop block 10 and the corresponding second stop block 11 by bolts and nuts, and the two ends of the auxiliary connecting blocks 12 are respectively abutted against the surfaces of the corresponding first stop blocks 10 and the second stop blocks 11 and are perpendicular to each other. Each of the auxiliary connecting blocks 12 is arranged at intervals along the length direction of the frame culvert 2.

[0049] As shown in the figure, through the mutual cooperation of the first stop block 10 and the second stop block 11, the first telescopic cylinder 3 and the second telescopic cylinder 4 can be effectively fixed, while improving their stability during operation and ensuring the accuracy of the frame culvert 2 when it is pushed forward.

[0050] A railway frame bridge construction method, applied to the railway frame bridge construction device, comprises the following implementation steps:

[0051] Step S1: Level the construction site, lay out the lines and measure, and determine the size and pushing direction of the frame culvert 2;

[0052] Step S2: A frame culvert 2 is fabricated on-site on one side of the bridge 1. During the casting of the frame culvert 2, eight through-filling holes 13 are reserved at the bottom of the frame culvert 2. During the fabrication of the frame culvert 2, a retaining wall 5 is constructed simultaneously, and the ground along the route is reinforced. (The construction process of the retaining wall 5 is conventional and will not be described in detail.)

[0053] Step S3: When strengthening the ground where the push passes, first excavate the surface along the route of the frame culvert 2 and form a foundation pit 14. Sixteen vertical support columns 15 are excavated and cast in the foundation pit 14 (the number of support columns 15 and the number of filling holes 13 are specifically set according to the size of the frame culvert 2 and the size of the foundation pit 14, and the number can be adjusted). The diameter of the support column 15 is smaller than the filling hole 13. Among them, a plurality of adjacent support columns 15 are commonly fixed with a plurality of first support blocks 16 and second support blocks 17 arranged in a crisscross pattern. The first support blocks 16 are arranged parallel to each other along the length direction of the frame culvert 2 and are pre-buried in each support column 15. The second support blocks 17 are arranged parallel to each other along the travel path of the frame culvert 2, and the number and position of each second support block 17 correspond one-to-one to each guide wheel 604. Each second support block 17 is fixed to the first support block 16 by bolts and nuts, and the upper surface of each second support block 17 is flush with the ground. Among them, the top of the support column 15 located below the bridge 1 is reserved with a plurality of threaded steel bars 18 protruding from its surface, and the upper end surface of the threaded steel bars 18 is less than or equal to the horizontal plane.

[0054] Step S4: After the maintenance of the frame culvert 2 is completed, the pushing mechanism, the guide wheel group 6, the first stopper 10, and the second stopper 11 and other components are installed at the corresponding positions on the surface of the frame culvert 2. After the installation is completed, they are debugged and the positions of the second support blocks 17 are calibrated to ensure the accuracy of the travel route;

[0055] Step S5, after all the preliminary preparations are completed, start pushing the frame culvert 2 toward the bridge 1, first synchronously control the working end of each second telescopic cylinder 4 to extend, and make each guide wheel 604 rotate toward the surface of the corresponding second support block 17, until each guide wheel 604 abuts against the surface of the corresponding second support block 17 (at the same time, one end face of each retaining ring 605 abuts against the side surface of the corresponding second support plate 602), and jointly push one end of the frame culvert 2 upward for a distance, then synchronously control the working end of each first telescopic cylinder 3 to extend, and drive the connecting frame 7 to abut against one side surface of the retaining wall 5, wherein, when the connecting frame 7 approaches and abuts against the retaining wall 5, the first The surface of the vertical end of the second rotating block 801 will first abut against the surface of the retaining wall 5 and rotate, while driving the supporting wheel 802 to rotate a certain angle and then abut against the ground and push one end of the frame culvert 2 upward for a distance. At this time, the frame culvert 2 is spaced apart from the ground under the joint action of the guide wheels 604 and the supporting wheels 802. As the working end of each first telescopic cylinder 3 continues to extend and abut against the retaining wall 5, each guide wheel 604 cooperates with the corresponding second supporting block 17, so that the frame culvert 2 moves toward the bridge 1. During the jacking process, the three retaining rings 605 arranged in a mirror image and cooperating with the guide wheels 604 can effectively limit the travel route of the frame culvert 2 to ensure the accuracy of jacking.

[0056] Step S6, when the working end of each first telescopic cylinder 3 is extended to the maximum stroke, the working end of each second telescopic cylinder 4 is first controlled to reset, so that each guide wheel 604 no longer contacts the surface of the second support block 17 after rotating a certain angle, and one end surface of the frame culvert 2 drops and abuts against each second support block 17, and then the first telescopic cylinder 3 is controlled to reset, so that each support wheel 802 no longer contacts the ground after rotating a certain angle, and the other end surface of the frame culvert 2 drops and contacts the ground. At this time, the frame culvert 2 is fixed in the current position under the action of its own weight, and then abutment blocks 19 are placed between each connecting frame 7 and the retaining wall 5, and then the corresponding processes in steps S5 and S6 are repeated until the frame culvert 2 is pushed to the bottom of the bridge 1. At the same time, the eight filling holes 13 reserved on the surface of the frame culvert 2 correspond one to one to the eight support columns 15 directly below it;

[0057] Step S7: Remove the components such as the pushing mechanism, the guide wheel assembly 6, the first stopper 10, and the second stopper 11 installed on the surface of the frame culvert 2 one by one. Then, tie steel bars in each filling hole 13 and connect them to the threaded steel bars 18. Then, pour concrete into each filling hole 13 until the concrete fills the foundation pit 14 and all filling holes 13 and covers all the previously tied steel bars. Then, cast the frame culvert 2 and the eight support columns 15 directly below it into an integral structure, effectively preventing the foundation from settling in the later stage.

[0058] Step S8: dismantle the retaining wall 5, cure the concrete in the filling hole 13, clean the surrounding ground, and complete the jacking of the frame culvert 2.

[0059] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A railway frame bridge construction structure, comprising a bridge (1), a frame culvert (2) cast in situ on one side of the bridge (1), and a jacking mechanism arranged on the surface of the frame culvert (2), characterized in that: The pushing mechanism includes a plurality of first telescopic cylinders (3) fixed on one side surface of the frame culvert (2) and a plurality of second telescopic cylinders (4) fixed on the other side surface of the frame culvert (2), wherein each of the first telescopic cylinders (3) is spaced apart along the length direction of the frame culvert (2), each of the first telescopic cylinders (3) is horizontally arranged, and the working end of each first telescopic cylinder (3) moves toward the end away from the bridge (1), and a retaining wall (5) is spaced apart on one side of the frame culvert (2) and is arranged opposite to the working end of each first telescopic cylinder (3), and the retaining wall (5) and the bridge (1) are parallel to each other, and the frame culvert (2) is spaced apart at each first telescopic cylinder (3). The travel route driven by a telescopic cylinder (3) is perpendicular to the length of the bridge (1); the second telescopic cylinder (4) is arranged opposite to the first telescopic cylinder (3), and the number and position of each second telescopic cylinder (4) correspond to the first telescopic cylinder (3) one by one, and the working end of each second telescopic cylinder (4) is connected to a guide wheel group (6) facing the bridge (1), and the guide wheel group (6) is arranged on a side surface of the frame culvert (2) close to the bridge (1), and when the working end of the second telescopic cylinder (4) is extended, it synchronously drives the guide wheel group (6) to rotate and lifts the frame culvert (2) upward for a distance in the form of abutting the ground.

2. The railway frame bridge construction structure according to claim 1, characterized in that: The guide wheel group (6) includes a first support plate (601) fixed on one side surface of the frame culvert (2), two second support plates (602) fixed vertically on the surface of the first support plate (601), and a first rotating block (603) hinged between the two second support plates (602), the two second support plates (602) are symmetrically arranged about the axis of the length direction of the corresponding second telescopic cylinder (4), one end of the first rotating block (603) is hinged to the working end of the corresponding second telescopic cylinder (4), and the other end is hinged to a guide wheel (604), wherein the axial center distance between the rotation center of the first rotating block (603) and the hinge point of the second telescopic cylinder (4) is greater than the axial center distance between the rotation center of the first rotating block (603) and the hinge point of the guide wheel (604), and the end of each second telescopic cylinder (4) away from the bridge (1) is hinged to the surface of the frame culvert (2) and rotates in a vertical plane.

3. The railway frame bridge construction structure according to claim 2, characterized in that: One end surface of each guide wheel (604) is fixed with a retaining ring (605) coaxially arranged therewith, and the diameter of the retaining ring (605) is larger than that of the guide wheel (604).

4. The railway frame bridge construction structure according to claim 3, characterized in that: A connecting frame (7) is fixed to the working ends of the adjacent plurality of first telescopic cylinders (3), each of the connecting frames (7) is horizontally arranged along the length direction of the frame culvert (2), and the surface of each connecting frame (7) is hinged with a plurality of support wheel groups (8) that move in a vertical plane, the position and number of each support wheel group (8) are one-to-one corresponding to the first telescopic cylinder (3), and the support wheel group (8) includes a second rotating block (801) elastically hinged to the surface of one side of the connecting frame (7) and a support wheel (802) hinged to the surface of the second rotating block (801), which In the embodiment, one end of the second rotating block (801) is vertically arranged near the retaining wall (5) and abuts against the surface of the adjacent connecting frame (7), and the other end faces the ground and is hinged to the support wheel (802), and the length between the rotation center of the second rotating block (801) and its vertical surface is greater than the length between the rotation center of the second rotating block (801) and the support wheel (802), the number and position of each guide wheel (604) and the support wheel (802) correspond one to one, and the axes of the corresponding guide wheels (604) and support wheels (802) are all on the same straight line.

5. The railway frame bridge construction structure according to claim 4, characterized in that: A plurality of placement grooves (9) for placing the vertical surface of the second rotating block (801) are provided on a side surface of the connecting frame (7) close to the retaining wall (5), and when the second connecting block is matched with the placement grooves (9), a side surface of the connecting frame (7) is flush with the vertical surface of the second connecting block and they abut against the retaining wall (5).

6. The railway frame bridge construction structure according to claim 5, characterized in that: The ends of the plurality of first telescopic cylinders (3) away from the retaining wall (5) are commonly connected to a first block (10), and the first blocks (10) are all fixedly connected to the frame culvert (2). The ends of the plurality of second telescopic cylinders (4) away from the bridge (1) are commonly hinged to a second block (11), and the second blocks (11) are all fixedly connected to the frame culvert (2). The first blocks (10) and the second blocks (11) correspond in number to each other and are parallel to each other. A plurality of auxiliary connection blocks (12) are commonly fixed between each of the first blocks (10) and the corresponding second blocks (11), and the two ends of the auxiliary connection blocks (12) are respectively in contact with the surfaces of the corresponding first block (10) and the second block (11) and are perpendicular to each other. The auxiliary connection blocks (12) are all spaced apart along the length direction of the frame culvert (2).

7. A railway frame bridge construction method, applied to a railway frame bridge construction device according to claims 1-6, characterized in that: The implementation steps include the following: Step S1, leveling the construction site and determining the size and pushing direction of the frame culvert (2); Step S2: a frame culvert (2) is fabricated on site on one side of the bridge (1). During the casting of the frame culvert (2), a plurality of through-filling holes (13) are reserved at the bottom of the frame culvert (2). During the fabrication of the frame culvert (2), a retaining wall (5) is constructed simultaneously and the ground along the route is reinforced. Step S3, when strengthening the ground, first excavate the surface along the route of the frame culvert (2) and form a foundation pit (14), excavate and cast a plurality of vertical support columns (15) in the foundation pit (14), the diameter of the support columns (15) is smaller than the filling hole (13), wherein a plurality of adjacent support columns (15) are fixed with a plurality of first support blocks (16) and second support blocks (17) arranged in a crisscross pattern, each of the first support blocks (16) is arranged parallel to each other along the length direction of the frame culvert (2), each of the second support blocks (17) is arranged parallel to each other along the route of the frame culvert (2), and the number and position of each second support block (17) corresponds to each guide wheel (604), and the upper surface of each second support block (17) is flush with the ground; wherein, a plurality of threaded steel bars (18) protruding from the surface are reserved at the top of the support column (15) located below the bridge (1); Step S4: After the maintenance of the frame culvert (2) is completed, the pushing mechanism, the guide wheel group (6), the first stopper (10) and the second stopper (11) and other components are installed at the corresponding positions on the surface of the frame culvert (2). After the installation is completed, the components are debugged and the positions of the second support blocks (17) are calibrated to ensure the accuracy of the travel route; Step S5: After all the preparatory steps are completed, the frame culvert (2) is pushed toward the bridge (1). First, the working end of each second telescopic cylinder (4) is synchronously controlled to extend, and each guide wheel (604) is rotated toward the surface of the corresponding second support block (17) until each guide wheel (604) abuts against the surface of the corresponding second support block (17), and together pushes one end of the frame culvert (2) upward for a distance. Then, the working end of each first telescopic cylinder (3) is synchronously controlled to extend, and the connecting frame (7) is driven to abut against the side surface of the retaining wall (5). When the connecting frame (7) is moved toward the retaining wall ( 5) In the process of approaching and abutting in the direction, the surface of the vertical end of the second rotating block (801) will first abut against the surface of the retaining wall (5) and rotate, and at the same time drive the supporting wheel (802) to rotate a certain angle and then abut against the ground and push one end of the frame culvert (2) upward for a distance. At this time, the frame culvert (2) is spaced apart from the ground under the joint action of each guide wheel (604) and the supporting wheel (802). As the working end of each first telescopic cylinder (3) continues to extend and abut against the retaining wall (5), each guide wheel (604) cooperates with the corresponding second supporting block (17), so that the frame culvert (2) moves toward the bridge (1); Step S6, when the working end of each first telescopic cylinder (3) is extended to the maximum stroke, the working end of each second telescopic cylinder (4) is first controlled to reset, so that each guide wheel (604) is no longer in contact with the surface of the second support block (17) after rotating a certain angle, and one end face of the frame culvert (2) is lowered and abuts against each second support block (17), and then each first telescopic cylinder (3) is controlled to reset, so that each support wheel (802) is no longer in contact with the ground after rotating a certain angle, and the other end face of the frame culvert (2) is lowered and abuts against the ground. At this time, the frame culvert (2) is fixed in the current position under the action of its own weight, and then abutment blocks (19) are placed between each connecting frame (7) and the retaining wall (5), and then the corresponding processes in steps S5 and S6 are repeated until the frame culvert (2) is pushed to the bottom of the bridge (1). At the same time, the multiple filling holes (13) reserved on the surface of the frame culvert (2) correspond one to one with the multiple support columns (15); Step S7, dismantle the components such as the pushing mechanism, the guide wheel assembly (6), the first stopper (10) and the second stopper (11) installed on the surface of the frame culvert (2) one by one, then tie steel bars in each filling hole (13) and connect them with the threaded steel bars (18), and then pour concrete into each filling hole (13) until the concrete fills the foundation pit (14) and all the filling holes (13); Step S8: remove the retaining wall (5), maintain the concrete in the filling hole (13), clean the surrounding ground, and complete the jacking of the frame culvert (2).

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