CN-116949947-B - Method for rotating cast-in-situ beam across existing railway

CN116949947BCN 116949947 BCN116949947 BCN 116949947BCN-116949947-B

Abstract

The invention discloses a turning method for crossing an existing railway cast-in-situ beam, which comprises the steps of installing a turning system on a bearing platform, installing a monitoring device at the same time, constructing a cast-in-situ beam above the turning system after the turning system and the monitoring device are installed, then driving the turning system to rotate so as to drive the cast-in-situ beam to rotate to a preset angle, and monitoring the rotation angle of the cast-in-situ beam through the monitoring device in the turning process. Compared with the traditional swivel construction, the invention does not need to measure and calculate the swivel angle through combining a total station and a level gauge in the swivel process, saves time and labor, and can ensure the personal safety of constructors.

Inventors

GUO XIAOSONG
WU DONG
WANG HAILONG
WANG XIAOWEN
JIANG LIQING
Kong Fuyong
LI SHANGJUN
LI HUAN
WANG BING
WANG QINGQING

Assignees

中铁七局集团有限公司
中铁七局集团武汉工程有限公司

Dates

Publication Date: 20260505
Application Date: 20230613

Claims (8)

1. The method is characterized in that a monitoring device is arranged on a bearing platform while a swivel system is arranged, after the swivel system and the monitoring device are arranged, a cast-in-situ beam is constructed above the swivel system, then the swivel system is driven to rotate so as to drive the cast-in-situ beam to rotate to a preset angle, the rotation angle of the cast-in-situ beam is monitored by the monitoring device in the swivel process, and the construction of the cast-in-situ beam is completed; the swivel system comprises: the lower spherical hinge is arranged on the bearing platform, an upper spherical hinge is arranged above the lower spherical hinge, the upper spherical hinge is rotationally connected with the lower spherical hinge under the drive of the traction device, and the cast-in-situ beam is positioned above the upper spherical hinge; The monitoring device includes: The annular rubber ring is sleeved between the upper spherical hinge and the lower spherical hinge to seal a gap between the upper spherical hinge and the lower spherical hinge, the bottom of the annular rubber ring is fixedly connected with the outer side wall of the lower spherical hinge, and the annular rubber ring is provided with a mounting hole which is positioned above the lower spherical hinge; One end of the sleeve is fixedly arranged on the outer side wall of the annular rubber ring and is communicated with the mounting hole, the other end of the sleeve extends out of the annular rubber ring, and the extending direction of the sleeve is parallel to the tangential direction of the circumference of the upper spherical hinge; The metal wire comprises a first metal wire and a second metal wire which are sequentially connected, the first metal wire is fixedly arranged on the outer side wall of the upper spherical hinge along the circumferential direction of the upper spherical hinge and is positioned on the inner ring of the annular rubber ring, one end, far away from the first metal wire, of the second metal wire penetrates through the mounting hole and is coiled in the sleeve and then penetrates out of the sleeve, the second metal wire is fixedly connected with the inner side wall, far away from one end of the upper spherical hinge, of the sleeve, and the length of the second metal wire coiled in the sleeve is the sum of the angular displacement of the rotating body beam rotating to a preset angle and the length of the sleeve; one end of the first metal wire, which is far away from the second metal wire, is electrically connected with a power supply negative electrode, one end of the second metal wire, which is positioned outside the sleeve, is electrically connected with one end of a resistor and a central processing unit, and the other end of the resistor is electrically connected with a power supply positive electrode; And the automatic control system is electrically connected with the central processing unit and the traction device.
2. The swivel method of crossing an existing railway cast-in-place beam of claim 1, wherein the swivel system further comprises: the lower spherical hinge framework is fixedly arranged in the middle of the top surface of the bearing platform, the lower spherical hinge is arranged on the top surface of the lower spherical hinge framework, a positioning pin shaft is vertically fixed in the center of the lower spherical hinge, a plurality of polytetrafluoroethylene sliding sheets are distributed on the top surface of the lower spherical hinge, and the upper spherical hinge is rotatably arranged on the plurality of polytetrafluoroethylene sliding sheets through the positioning pin shaft; The lower turntable is horizontally arranged and integrally formed with the bearing platform, the lower spherical hinge framework and the lower spherical hinge, and the top surface of the lower spherical hinge is higher than the top surface of the lower turntable; The upper turntable is horizontally arranged and integrally formed with the upper spherical hinge, the bottom surface of the upper turntable is higher than the bottom surface of the upper spherical hinge, the cast-in-situ beam is positioned above the upper turntable, the traction device is connected with the upper turntable, and the monitoring device is positioned between the upper turntable and the lower turntable; the annular slide, its setting is in the periphery of lower spherical hinge skeleton and with lower carousel integrated into one piece, the fixed steel sheet that is equipped with of top surface of annular slide, the top surface of steel sheet is higher than the top surface of lower carousel, follow on the steel sheet a plurality of slides have been laid to the circumference interval of annular slide, fixed the spike that is equipped with on any slide, the spike passes through slide gliding setting is in on the steel sheet, the upper portion of spike with go up carousel integrated into one piece.
3. The method for turning over the existing railway cast-in-place beam according to claim 2, wherein the traction device comprises a plurality of traction ropes, the anchoring ends of the traction ropes are respectively embedded in the upper turntable through a plurality of anchors, the free ends of the traction ropes extend out of the upper turntable and are respectively connected with a plurality of tensioning jacks after being wound around the periphery of the upper turntable, the tensioning jacks are respectively fixedly arranged on a plurality of traction reaction seats, any one of the tensioning jacks is electrically connected with the automatic control system, and any one of the traction reaction seats is fixedly arranged on the top of the bearing platform.
4. The method for turning the existing railway cast-in-place beam across according to claim 1, wherein a limiting groove is fixedly formed in the inner side wall of the sleeve close to one end of the upper spherical hinge, the second metal wire penetrates into the limiting groove, the diameter of an inner hole of the limiting groove is the same as that of the second metal wire, and the inner bottom surface of the limiting groove and the position of the second metal wire fixed on the inner side wall of the sleeve are located at the same horizontal height.
5. The method of turning over an existing railway cast-in-place beam according to claim 1, wherein the monitoring device further comprises a bracket fixedly arranged on the outer side wall of the lower spherical hinge, and the sleeve is fixedly connected with the bracket.
6. The method of turning over an existing railway cast-in-place beam according to claim 2, wherein the monitoring device further comprises a plurality of hydraulic jacks arranged at intervals along the circumferential direction of the annular slideway, a fixed end of any hydraulic jack is connected with the steel plate, a telescopic end vertically upwards abuts against the bottom surface of the upper turntable, and the hydraulic jack is electrically connected with the automatic control system.
7. The swivel method of crossing an existing railway cast-in-place beam of claim 2, wherein the center of the annular slide and the center of the lower spherical hinge are located at the same position.
8. The method for turning a cast-in-situ beam across an existing railway as claimed in any one of claims 1 to 7, wherein the cast-in-situ beam turning construction comprises the following steps: s1, after construction of a bearing platform is completed, a lower spherical hinge framework, a lower spherical hinge and an annular slideway are arranged on the bearing platform; S2, pouring lower turntable concrete on a top surface vertical mould of the bearing platform, wherein the lower turntable concrete, the bearing platform, a lower spherical hinge framework, a lower spherical hinge and an annular slideway are integrally formed; s3, installing a positioning pin shaft in the center of the lower spherical hinge, installing a polytetrafluoroethylene sliding sheet on the surface of the lower spherical hinge, and hoisting the upper spherical hinge to be in butt joint with the lower spherical hinge; S4, installing a monitoring device at a gap between the upper spherical hinge and the lower spherical hinge; S5, casting traction counterforce seat concrete on an outer side vertical die at the top of the bearing platform and installing a tensioning jack; s6, embedding a traction cable, pouring upper turntable concrete by a vertical die, integrally forming the upper turntable concrete, an upper spherical hinge and the upper part of a supporting foot, and connecting the traction cable with a tensioning jack on a traction counterforce seat after winding the traction cable on the periphery of the upper turntable; s7, constructing a cast-in-situ beam on the top surface of the upper turntable; S8, driving the upper turntable to rotate through the tensioning jack and the traction rope, and performing test rotation on the cast-in-situ beam; And S9, formally carrying out the rotation of the cast-in-situ beam, monitoring the rotation angle of the cast-in-situ beam through a monitoring device, and driving a hydraulic jack to limit the upper turntable when the rotation of the cast-in-situ beam reaches a preset angle, so that the cast-in-situ Liang Zhuaiti is completed.

Description

Method for rotating cast-in-situ beam across existing railway Technical Field The invention relates to the field of swivel beam construction. More particularly, the invention relates to a swivel method for crossing an existing railway cast-in-place beam. Background At present, most bridge piece swivel construction processes are used for crossing existing railway lines, the requirements on the existing railway line construction safety management are strict, the approval procedures are complex, the construction is required to be completed within a given time, and otherwise, the transportation safety of the existing railway lines is affected. The traditional swivel construction precision control is that a technician performs measurement calculation on a swivel bridge piece by combining a total station with a level gauge, then informs site personnel to perform point control adjustment on a beam body, and because the measurement calculation needs to take a lot of time, the technician needs to hold a measuring instrument to go on a bridge to enter an existing line, certain potential safety hazards exist, and the defects of slow beam body adjustment measurement, labor and effort consumption, high construction cost and poor safety are overcome. Disclosure of Invention The invention also aims to provide a turning method for the cast-in-situ beam across the existing railway, which monitors the turning angle of the cast-in-situ beam through a monitoring device, compared with the traditional turning construction, the turning angle does not need to be measured and calculated through the combination of a total station and a level gauge in the turning process, so that time and labor are saved, and the personal safety of constructors can be ensured. To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method of turning a cast-in-place beam across an existing railway, installing a monitoring device while installing a turning system on a table, constructing a cast-in-place beam above the turning system after the turning system and the monitoring device are installed, then driving the turning system to rotate to drive the cast-in-place beam to rotate to a preset angle, and monitoring the rotation angle of the cast-in-place beam by the monitoring device during the turning process, wherein the construction of the cast-in-place beam is completed; the swivel system comprises: the lower spherical hinge is arranged on the bearing platform, an upper spherical hinge is arranged above the lower spherical hinge, the upper spherical hinge is rotationally connected with the lower spherical hinge under the drive of the traction device, and the cast-in-situ beam is positioned above the upper spherical hinge; The monitoring device includes: The annular rubber ring is sleeved between the upper spherical hinge and the lower spherical hinge to seal a gap between the upper spherical hinge and the lower spherical hinge, the bottom of the annular rubber ring is fixedly connected with the outer side wall of the lower spherical hinge, and the annular rubber ring is provided with a mounting hole which is positioned above the lower spherical hinge; One end of the sleeve is fixedly arranged on the outer side wall of the annular rubber ring and is communicated with the mounting hole, the other end of the sleeve extends out of the annular rubber ring, and the extending direction of the sleeve is parallel to the tangential direction of the circumference of the upper spherical hinge; The metal wire comprises a first metal wire and a second metal wire which are sequentially connected, the first metal wire is fixedly arranged on the outer side wall of the upper spherical hinge along the circumferential direction of the upper spherical hinge and is positioned on the inner ring of the annular rubber ring, one end, far away from the first metal wire, of the second metal wire penetrates through the mounting hole and is coiled in the sleeve and then penetrates out of the sleeve, the second metal wire is fixedly connected with the inner side wall, far away from one end of the upper spherical hinge, of the sleeve, and the length of the second metal wire coiled in the sleeve is the sum of the angular displacement of the rotating body beam rotating to a preset angle and the length of the sleeve; one end of the first metal wire, which is far away from the second metal wire, is electrically connected with a power supply negative electrode, one end of the second metal wire, which is positioned outside the sleeve, is electrically connected with one end of a resistor and a central processing unit, and the other end of the resistor is electrically connected with a power supply positive electrode; And the automatic control system is electrically connected with the central processing unit and the traction device. Preferably, the swivel system further comprises: the lower spherical hinge framework is fixedly a