CN113513630A - Pipeline crossing pushing system for narrow deep valley or wide river and process thereof - Google Patents
Pipeline crossing pushing system for narrow deep valley or wide river and process thereof Download PDFInfo
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- CN113513630A CN113513630A CN202110481516.2A CN202110481516A CN113513630A CN 113513630 A CN113513630 A CN 113513630A CN 202110481516 A CN202110481516 A CN 202110481516A CN 113513630 A CN113513630 A CN 113513630A
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- truss
- spanning
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- span
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/0243—Laying or reclaiming pipes on land, e.g. above the ground above ground
- F16L1/0246—Laying or reclaiming pipes on land, e.g. above the ground above ground at a certain height off the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/24—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with a special member for attachment to profiled girders
Abstract
The invention provides a pipeline crossing pushing system for narrow and deep valleys or wide rivers and a process thereof. The span structure is connected with the first truss spanning truss, the temporary holding structure is connected among the trusses, the transverse pushing device can push forwards or pull backwards to span the trusses, the hinge device is connected between the transverse pushing device and the tail end of the last truss spanning truss, the vertical jacking device can provide vertical upward or downward thrust for the spanning trusses, and the sending rollers are arranged on the left side and the right side of the top of the pushing track and the buttresses. The invention solves the problem that the truss cannot be hoisted to complete the span on a narrow valley or a wide river, not only meets the requirement of safe installation of the truss, but also expands the applicability of pipeline installation in mountainous areas.
Description
Technical Field
The invention relates to the technical field of installation and construction of large-scale crossing of oil and gas pipelines, in particular to a pipeline crossing pushing system for narrow deep valleys or wide rivers and a process thereof.
Background
Oil and gas pipeline truss span is an engineering structure which adopts a mode similar to a bridge truss structure to bear oil and gas pipelines to pass through regions such as canyons, rivers and the like.
Generally, oil and gas pipelines are spanned by main structural forms such as suspension cable type, inclined pull cable type, truss type and the like, wherein the truss type is a pipeline spanning structural form which is relatively common in domestic and foreign application and has relatively low investment. The structure mainly comprises a lower structure (spanning foundation), an upper structure (truss bridge), an oil and gas pipeline and the like. The main load bearing structure is a truss type steel structure, the truss type steel structure is connected with the pipeline through a vertical constraint relieving structure (roller support), and therefore when external loads such as gravity, earthquake and strong wind are applied to spanning, the truss structure can bear most of loads, and stress safety of the oil-gas pipeline is guaranteed.
The truss spans three main structures: namely a truss foundation, a steel structure truss and an oil and gas pipeline. Wherein the truss foundation is located at a stable position across the section, such as a mountain or river bed stable region of a mountain canyon; the steel structure truss is formed by steel pipes or steel members with rectangular sections or triangular sections, and is placed on a truss foundation in a cross-over mode in a vertical constraint mode; the oil and gas pipeline passes through the spanning section by utilizing the supporting function of the roller wheel bracket on the truss bridge body.
The existing oil and gas pipeline truss spans, after a truss foundation is finished, the truss is usually prefabricated in a prefabricated field, transported to the position of the span section of the truss foundation, and hoisted one by one onto the truss foundation by two or one large hoisting device, so that installation is finished.
The prior art can only meet the implementation of crossing a flat and wide area, and can only adopt auxiliary measures for independently erecting auxiliary steel edge bridges or full-space pipe erection for wide water rivers and narrow deep valley areas, and the auxiliary measures have the advantages of large installation and removal investment, long construction time, wide occupied area and great pressure on the economical efficiency of construction, so that great influence can be brought to the early-stage pipeline routing and project research. Therefore, the effective, fast and economical oil and gas pipeline truss crossing construction mode is an urgent problem to be solved in mountainous area pipeline laying.
Disclosure of Invention
For the single-span or multi-span truss span in the mountain deep V valley and river areas, the truss span is large, the self weight is also large, but the site terrain is narrow and small, no effective hoisting equipment station site exists, and the truss cannot be directly prefabricated and hoisted in place.
The inventor finds out through research that: by combining the structural characteristics of crossing of the pipeline truss, the problem that the large-span truss cannot be hoisted in place by large-scale hoisting equipment in a narrow mountain area or a wide river section at one time can be effectively solved by adopting the pushing process of the truss, the building requirements of the large-scale equipment entering road and the prefabricated in-place field can be effectively reduced, and the quick, safe and quick truss crossing installation is finally achieved. After the oil and gas pipeline truss is integrally prefabricated, the oil and gas pipeline truss can be sent to pass through a deep valley or a wide river in a mode of pushing outside the crossing section. That is to say, the whole construction process only adopts small-size lifting device cooperation truss whole prefabrication and with the truss install on sending the frame in place can, need not adopt large-scale lifting device to carry out the hoist and mount of truss and take one's place.
Furthermore, the inventors have found that: the first truss is heavy, and the gravity center can move to the range of the cross section in the process of being sent to the opposite side of the cross section, so that the trend of falling is generated, and the success of sending is influenced.
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, an object of the present invention is to provide a pipeline crossing pushing system and a process thereof, which can rapidly and economically perform oil and gas pipeline truss crossing construction in a narrow deep valley (or deep V canyon) with a width-to-depth ratio of less than 1:2, a large truss span and a large self weight (for example, the truss span is between 50m and 90m, the self weight is between 30t and 100t, and truss piers that can be arranged in the narrow deep valley are not more than 90m), and a region with a narrow field and no effective hoisting equipment standing site.
Another object of the present invention is to provide a pipe crossing pushing system and a process thereof, which can rapidly and economically complete oil and gas pipe truss crossing construction in a wide river area with a width-depth ratio of more than 1:2, in an area where a truss span is large and a self weight is also large (for example, a truss span is between 50m and 90m and a self weight is between 30t and 100t, and a truss pier which can be arranged in a wide river is not more than 90m), and in an area where a site is narrow and has no effective hoisting equipment standing site.
In order to achieve the above object, the present invention provides, in one aspect, a pipe crossing pushing system for a narrow deep valley or a wide river, the pipe crossing pushing system including a sending platform, a pushing track, a leading structure, a plurality of temporary grasping structures, a transverse pushing device, a hinge device, a plurality of vertical jacking devices, and a plurality of sending rollers, wherein the sending platform is installed at one side of the narrow deep valley having a width-to-depth ratio of less than 1:2 or the wide river having a width-to-depth ratio of more than 1:2, and the sending platform is disposed adjacent to a first truss pier and has a working surface parallel to an upper surface of the first truss pier; the pushing track is laid on the sending platform and can provide a sliding track for the spanning truss to move from the sending platform to the first truss pier; the span structure is provided with a first end connected with the first span truss and a second end contacted with the truss pier, and the height of the span structure is gradually reduced from the first end to the second end; the temporary handshake structure can connect the upper chord main limb of each spanning truss to transfer bending moment; the transverse pushing device is connected to the pushing track, can provide horizontal pushing force in the upstream direction for the spanning truss so that the spanning truss and the span-leading structure can sequentially slide through the truss buttresses along a preset route, and can also provide horizontal pulling force in the downstream direction for the spanning truss so as to adjust the position offset of the spanning truss and the span-leading structure in the pushing sliding process; the hinge device is connected between the transverse pushing device and the tail end of the last truss spanning truss, and can transmit thrust to adjust the deviation of the spanning truss in the upward and downward directions in the pushing and sliding processes under the condition that the transverse pushing device provides horizontal thrust in the upward and downward directions for the spanning truss; the plurality of vertical jacking devices are respectively arranged on the left side and the right side of the top of each truss pier and can provide vertical upward or downward thrust for the spanning truss, so that the spanning truss can be vertically located on the supporting seat of each truss pier; the plurality of sending rollers are detachably connected to the left side and the right side of the pushing track and the left side and the right side of the top of each truss buttress respectively.
In an exemplary embodiment of the pipe-spanning jacking system for narrow deep valleys or wide rivers according to the present invention, the span of the spanning truss may be 50m to 90m, the width may be less than 3m, the height may be less than 4m, and the self weight of the spanning truss may be 30t to 100t, and the distance between truss buttresses provided in the narrow deep valley having the width-to-depth ratio of less than 1:2 or the wide river having the width-to-depth ratio of more than 1:2 may be less than or equal to 90 m.
In an exemplary embodiment of the pipe-crossing jacking system for narrow deep valleys or wide rivers according to the present invention, the pipe-crossing jacking system may include a plurality of limit adjusting roller frames respectively disposed on both upstream and downstream sides of the top of each truss pier, and capable of adjusting the deviation of the crossing truss in the upstream and downstream directions during jacking slip.
In an exemplary embodiment of the pipe spanning pushing system for narrow deep valleys or wide rivers according to the present invention, the pipe spanning pushing system may include a clamping base disposed on the pushing rail and connected to the lateral pushing device, and the clamping base may clamp the pushing rail to reversely stabilize the spanning truss in a case where the lateral pushing device provides a horizontal pulling force in a downstream direction to the spanning truss.
In an exemplary embodiment of the pipe spanning pushing system for narrow deep valleys or wide rivers according to the present invention, the pipe spanning pushing system may include a clamping device, the transverse pushing device is connected to the pushing rail through the clamping device, the clamping device can clamp the pushing rail in a process that the transverse pushing device pushes each spanning truss, and can loosen the pushing rail after the transverse pushing device pushes each spanning truss to a proper position.
In one exemplary embodiment of the pipe-over jacking system for narrow deep valleys or wide rivers of the present invention, the lateral jacking device may comprise a jacking jack.
In one exemplary embodiment of the pipe-spanning jacking system for narrow deep valleys or wide rivers of the present invention, the vertical jacking device may comprise a jacking jack.
In one exemplary embodiment of the pipe-spanning jacking system for narrow deep valleys or wide rivers of the present invention, the temporary gripping structure may be a seamless steel pipe or a profiled steel.
In another aspect, the present invention provides a process for a pipe-spanning jacking system for narrow deep valleys or wide rivers, the process comprising the steps of: s1, designing and calculating the size of the span-leading structure and the required jacking force of the truss structure in each typical jacking installation process according to the span and the weight of the span-crossing truss and different working conditions of the jacking installation stage; s2, erecting a pushing track on the sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span introduction structure, placing a first spanning truss on the sending rollers of the pushing track, and hoisting the span introduction structure and connecting the front end of the first spanning truss in place; s3, connecting the transverse pushing device with the tail end of the first truss spanning truss through the hinge device, starting the transverse pushing device, and pushing and sending the first truss spanning truss and the span introduction structure to a spanning section between the first truss buttress and the second truss buttress through the transverse pushing device; s4, placing a second spanning truss on a sending roller of the pushing track, connecting the second spanning truss with the first spanning truss through a temporary handshake structure, pushing and sending the second spanning truss to a spanning section between a first truss pier and a second truss pier by using a transverse pushing device, pulling the spanning truss back to a sending platform by using the transverse pushing device and pushing and sending again if the spanning truss deviates more than 30 degrees in the upstream direction in the pushing and sliding process, and moving the transverse pushing device by a preset stroke in the upstream direction after the spanning truss is pushed to the right position; s5, repeating the step S4, continuously connecting other spanning trusses with the last spanning truss in sequence, pushing and sending the trusses to a spanning section between a first truss pier and a second truss pier, and removing a spanning structure connected with the first spanning truss and a temporary shaking structure connected between every two spanning trusses after all spanning trusses are pushed and sent to a preset spanning section; and S6, starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, removing the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
In an exemplary embodiment of the present process for a pipe-over-pushing system for narrow deep valleys or wide rivers, the process may further comprise the steps of:
s1', designing and calculating the size of the span-leading structure and the required jacking force of the truss structure in each typical jacking installation process according to the span and the weight of the span-crossing truss and different working conditions of the jacking installation stage;
s2', erecting a pushing track on a sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span leading structure, connecting upper chord main limbs of each spanning truss through a temporary shaking structure to form a full-span truss, placing the full-span truss on the sending rollers of the pushing track, connecting the transverse pushing device with the tail end of the last spanning truss through a hinge device, and hoisting the span leading structure to be connected with the front end of the first spanning truss in place;
s3', starting a transverse pushing device, controlling a clamping device to clamp a pushing track, pushing and sending a first spanning truss and a leading span structure to a spanning section between a first truss pier and a second truss pier through the transverse pushing device, adjusting the offset of the spanning truss in the upstream and downstream directions in the pushing and sliding process through a limiting adjusting roller frame if the spanning truss generates an offset smaller than or equal to 30 degrees in the upstream and downstream directions in the pushing and sliding process, pulling the first spanning truss and the leading span structure back to a sending platform through the transverse pushing device and pushing and sending again if the spanning truss generates an offset larger than 30 degrees in the upstream and downstream directions in the pushing and sliding process, and controlling the clamping device to loosen the pushing track after the pushing is in place, and moving the transverse pushing device for a preset stroke in the upstream direction;
s4 'and repeating the step S3', continuously pushing and sending other spanning trusses to a spanning section between the first truss pier and the second truss pier in sequence, and after each spanning truss is pushed and sent to the spanning section between the appointed truss piers, detaching a spanning structure connected with the first spanning truss and a temporary handshake structure connected between the spanning trusses;
and S5', starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, dismantling the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
Compared with the prior art, the beneficial effects and advantages of the invention comprise at least one of the following:
(1) the crossing of the oil and gas pipeline truss has the characteristic of small section (usually the width is less than 3m, and the height is less than 4m), the total width-span ratio (for example, the width-span ratio of the crossing of the pipeline truss is 1/100-1/25) is greatly smaller than that of a road truss and a railway truss (for example, the width-span ratio of the crossing of the road truss and the railway truss is more than 1/20), so the structure flexibility of the crossing of the oil and gas pipeline truss is larger, the invention realizes the smooth pushing of the truss at the design position of the truss pier through a crossing structure and a transverse pushing device, and simultaneously, in order to adapt to the flexibility characteristic of the crossing truss in the pushing process, the safety control capability is increased, the transverse pushing device adopted by the invention not only has the pushing effect, but also can keep the pulling effect, can be adjusted according to the deviation of the upstream direction and the downstream direction in the pushing process of the flexible truss, and ensures that the truss can be accurately positioned at the design position of the truss pier, in addition, the limiting and adjusting roller frame can also be adjusted according to the upstream and downstream direction offset in the pushing process of the flexible truss, so that the truss is always in the correct direction in the pushing process;
(2) the pipeline crossing pushing system can combine the clamping base connected with the pushing track through the transverse pushing device and the hinge device connected with the tail of the crossing truss through the transverse pushing device, so that the pipeline crossing pushing system can combine the stress condition of the crossing structure in the pushing process under the action of pushing force and pulling force to play a role of reverse stabilization;
(3) the pipeline crossing pushing system can quickly and economically finish the oil and gas pipeline truss crossing construction in narrow deep valleys or wide rivers, and can effectively solve the technical problem that large hoisting equipment cannot be effectively provided for truss hoisting operation by adopting a traditional method when a truss is erected on the narrow deep valleys with the width-depth ratio of less than 1:2 or the wide rivers with the width-depth ratio of more than 1: 2;
(4) the invention can meet the requirement of safe installation of the truss, reduce the construction of the approach road and the temporary land consumption and reduce the influence on the environment;
(5) the method can provide reference for project grindable routing and site selection work, and the applicability of pipeline installation in mountainous areas is expanded.
Drawings
FIG. 1 shows a schematic structural view of a pipe-over jacking system for narrow deep valleys or wide rivers according to the present invention;
fig. 2 shows a schematic flow diagram of the process of the pipe-span jacking system for narrow deep valleys or wide rivers of the present invention.
The reference numerals are explained below:
the device comprises a 1-sending platform, a 2-first truss pier, a 3-pushing track, a 4-pushing jack, a 5-sending roller, a 6-first truss spanning structure, a 7-span guiding structure, an 8-pushing jack, a 9-temporary shaking structure, a 10-clamping device, an 11-hinging device, a 12-clamping base and a 13-limiting adjusting roller frame.
Detailed Description
Hereinafter, the pipe-span jacking system for narrow deep valleys or wide rivers and the process thereof according to the present invention will be described in detail with reference to the exemplary embodiments and the accompanying drawings. Herein, the terms "first" and "second" are used merely for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance or a strict order of magnitude.
The invention adopts a small-section light structure, namely a pipeline truss pushing and sending span-leading structure which is arranged at the front end of a first truss, so that the span-leading structure is already positioned on a truss pier at the front end of a cross section before the center of gravity moves to the cross section range in the sending process of the first truss, and the subsequent truss can be continuously pushed to a designed position in place. The pushing system designed by the characteristics of the truss is adopted in the whole process of sending the spanning structure, so that the spanning structure is gradually positioned at the designed position under the jacking force of the pushing device when being led to the installation of the truss body.
In one aspect, the present invention provides a pipe-crossing jacking system for narrow deep valleys or wide rivers.
In an exemplary embodiment of the present invention, a pipe-crossing jacking system for narrow deep valleys or wide rivers may include a launching platform, a jacking track, a spanning structure, a plurality of temporary grips, a lateral jacking device, an articulation device, a plurality of vertical jacking devices, and a plurality of launching rollers.
Specifically, the sending platform is installed on one side of a narrow valley with a width-to-depth ratio of less than 1:2 or a wide river with a width-to-depth ratio of more than 1:2, is arranged next to the first truss pier, and has a working surface parallel to the upper surface of the first truss pier. The sending platform is used for placing the prefabricated spanning truss and continuously pushing and sending the spanning truss to the opposite side of the spanning section, so that the height of the position where the sending platform is located is consistent with the height of the truss pier. In addition, the sending platform can be built in a flat and wide area, so that construction operation is facilitated.
The pushing track is laid on the sending platform and can provide a sliding track for the spanning truss to move from the sending platform to the first truss pier.
The span structure is provided with a first end connected with the first span truss and a second end contacted with the truss pier, and the height of the span structure is gradually reduced from the first end to the second end. The span structure can be made of section steel on site.
The temporary holding structure can be connected with the upper chord main limb of each spanning truss to transfer bending moment, and the temporary holding structure can adopt a seamless steel pipe or profile steel welding mode. Here, the pushing of multiple spanning trusses also requires a temporary holding structure to be arranged between each spanning truss because: the single truss is designed to be independently loaded in a use state, namely each truss independently supports the truss and is responsible for supporting the gravity of the pipeline part, and bears independent bending load; each spanning truss needs to be subjected to bending moment added by the front truss and the rear truss and the span-leading structure in the pushing installation construction process, and under the influence of the bending moment, the overall rigidity is low due to the design principle that the supporting load of the pipeline spanning truss is small and the weight is reduced; therefore, a temporary welding and holding mechanism is needed to be welded between the independent spanning trusses for each truss, and the temporary welding and holding mechanism mainly plays a role in connecting the upper chord main limbs of each truss and transmitting bending moment. And (4) removing the temporary holding structure before each spanning truss is pushed and vertically placed on the permanent support of the buttress.
The transverse pushing device is connected to the pushing track in a sliding mode and can provide horizontal pushing force for the spanning truss, so that the spanning truss and the span guiding structure can slide through the truss buttresses together along a preset route in sequence.
The transverse pushing device is connected to the pushing track and can provide horizontal pushing force in the upstream direction for the spanning truss so that the spanning truss and the span-leading structure can slide through the truss buttresses together along a preset route in sequence; and horizontal pulling force in the downstream direction can be provided for the spanning truss so as to adjust the position offset of the spanning truss and the spanning structure in the pushing and sliding process. Two groups of transverse pushing devices can be arranged and are respectively arranged at the left side and the right side of the pushing track. For example, the lateral thrusters may be jacking jacks. After the spanning truss is prefabricated and is located on the outer side of the first truss pier, the pushing jack can be in contact with one end of the spanning truss and generates thrust, and the spanning truss moves in the upstream direction along the pushing track. Here, the upstream direction refers to a direction moving forward to the truss pier from the launch platform across the truss, and the downstream direction refers to a direction moving backward to the launch platform from the truss pier across the truss.
The hinge device is connected between the transverse pushing device and the tail end of the last truss spanning truss, and can transmit thrust to adjust the deviation of the truss spanning truss in the upward and downward directions in the pushing sliding process under the condition that the transverse pushing device provides horizontal thrust in the upward direction to the truss spanning.
The vertical jacking devices are respectively arranged on the left side and the right side of the top of each truss pier and can provide vertical upward or downward thrust for the crossing truss, so that the crossing truss can be vertically located on the supporting seat of each truss pier after the full-span jacking is completed. For example, the vertical jacking device may be a jacking jack, and the jacking jack may be respectively provided at the left and right sides of the top of each truss buttress, or may be provided at four vertices of the top of each truss buttress.
The plurality of sending rollers are detachably connected to the left side and the right side of the pushing track and the left side and the right side of the top of each truss buttress respectively. The sending roller is used for reducing friction between the spanning truss and the pushing track and the truss pier in the sliding process, and the pushing construction speed and efficiency are improved.
In this embodiment, the pipe spanning pushing system may include a plurality of spacing adjustment roller frames. The limiting adjusting roller frames are respectively arranged on the upstream side and the downstream side of the top of each truss pier, and the deviation of the crossing truss in the upstream and downstream directions in the pushing and sliding process can be adjusted. For example, a set of limiting and adjusting roller frames can be mounted on the top of each buttress in the upstream and downstream directions, arc-shaped polyurethane rollers of the limiting and adjusting roller frames are in contact with the main limbs of the lower chord steel pipe spanning the upstream and downstream directions of the truss, adjustment is carried out according to the upstream and downstream offset of the flexible truss in the pushing process, and the truss is ensured to be always in the correct direction in the pushing process.
In this embodiment, the pipe-spanning jacking system may include a clamping base. The clamping base is arranged on the pushing track and connected with the transverse pushing device, and can clamp the pushing track to reversely and stably cross the truss under the condition that the transverse pushing device provides horizontal pulling force in the downstream direction for the crossing truss. Based on the characteristic of larger crossing flexibility of the oil-gas pipeline truss, in order to adapt to the flexibility characteristic in the pushing process and increase the safety control capability, the pipeline crossing pushing system can be combined with a clamping base connected with the transverse pushing device and the pushing track and a hinge device connected with the transverse pushing device and the tail part of the crossing truss besides being provided with the transverse pushing device, so that the pushing effect can be met, the pulling effect can be kept, and the reverse stabilizing effect can be realized by combining the stress condition of the crossing structure in the pushing process.
In this embodiment, the pipe-spanning jacking system may include a clamping device. The transverse pushing device is connected with the pushing track through a clamping device, the clamping device can clamp the pushing track in the process that the transverse pushing device pushes each spanning truss, and the pushing track can be released after the transverse pushing device pushes each spanning truss in place. Under the state that the clamping device is loosened, the transverse pushing device can automatically move to the upstream direction for a preset stroke under the action of pulling force. For example, the predetermined stroke of moving one transverse pushing device each time may be 800mm, in the pushing process of each truss spanning, the clamping device clamps the pushing rail, after pushing is finished, the clamping device releases the pushing rail, the transverse pushing device moves forward by 800mm and then clamps the pushing rail again, and the next pushing step is continued.
In this embodiment, the span of the spanning truss may be 50m to 90m, the width may be less than 3m, the height may be less than 4m, the self weight of the spanning truss may be 30t to 100t, and the distance between truss buttresses disposed in a narrow valley with a width-to-depth ratio of less than 1:2 or a wide river with a width-to-depth ratio of more than 1:2 may be less than or equal to 90 m. For example, the canyon depth of a narrow deep valley may be 40m to 100m, and the river width of a wide river may be 100m to 1000 m. Here, the aspect ratio of the narrow deep valley refers to a ratio between the total length of the spanning truss installed between two canyons and the depth of the canyon, and the aspect ratio of the wide river refers to a ratio between the total length of the spanning truss connecting both banks of the river and the depth of the river.
For example, as shown in fig. 1, a pipe crossing pushing system for narrow deep valleys or wide rivers may include a sending platform 1, a pushing track 3, a pushing jack 4, a sending roller 5, a crossing structure 7, a jacking jack 8, a temporary grasping structure 9, a clamping device 10, an articulation device 11, a clamping base 12, and a limit adjusting roller frame 13. The delivery platform 1 is arranged close to the first truss pier 2, the pushing track 3 is laid on the delivery platform 1, and the pushing jack 4 is placed on the pushing track 3 and is in sliding connection with the pushing track 3. One end of a first spanning truss 6 is connected with a spanning structure 7 and is placed on the pushing track 3. The pushing jack 4 is positioned at the other end of the first spanning truss 6 and used for pushing and sending the spanning truss to the spanning section. Jacking jacks 8 are respectively arranged at the top of each truss pier, and the crossing truss can be vertically moved through the jacking jacks 8. And the top of each truss pier is provided with a sending roller 5 for supporting the spanning truss in the sending process. A plurality of sending rollers 5 are also arranged on the tracks on the two sides of the pushing track 3 and used for reducing the friction resistance between the spanning truss and the tracks. The temporary holding structure 9 is connected between every two spanning trusses and used for connecting the upper chord main limbs of every two trusses to transfer bending moment. The clamping device 10 is arranged on the pushing jack 4 and used for clamping the pushing track 3 in the process that the pushing jack 4 pushes each spanning truss, and loosening the pushing track 3 after each spanning truss is pushed to the right position by the pushing jack 4. The hinging device 11 is connected between the pushing jack 4 and the spanning truss tail connection, the clamping base 12 is arranged on the pushing track 3 and connected with the pushing jack 4, the pushing system can also keep the pulling effect while meeting the pushing effect due to the arrangement of the two devices, and the reverse stabilizing effect can be achieved by combining the stress condition of the spanning structure in the pushing process. Meanwhile, the limiting adjusting roller carrier 13 is arranged in the upstream direction and the downstream direction of the top of each truss pier, the limiting adjusting roller carrier 13 is in contact with the main limbs of the lower chord steel tube spanning the upstream direction and the downstream direction of the truss, adjustment can be carried out according to the upstream and downstream direction deviation in the flexible truss pushing process, and the truss spanning in the pushing process is ensured to be always in the correct direction.
In another aspect, the invention provides a process for a pipe-crossing jacking system for narrow deep valleys or wide rivers.
In an exemplary embodiment of the invention, a process for a pipe-over-pushing system for narrow deep valleys or wide rivers may include the steps of:
and S1, designing and calculating the size of the spanning structure and the required jacking force of the truss structure in each typical jacking installation process according to the span and the weight of the spanning truss and different working conditions in the jacking installation stage.
Here, the determination of the span structure needs to be determined according to the weight and the width of the first span truss, and the bending moment which needs to be balanced in the process from the first truss pier to the next pier in the pushing process of the first span truss. That is, the spanning structure is mainly used for resisting the falling tendency of the truss in the spanning truss pushing process.
The span-leading structure mainly comprises a nose at the front end, a span-leading truss sheet and a transverse connecting beam. The nose at the front end compensates the downwarping size in the process of drawing span and pushing, and the drawing span crossing truss sheets and the connecting beams form a drawing span main body which plays a main role in guiding and gravity compensation for the drawing span and pushing. The section width and length of the span structure and the specification of the member section are calculated according to the calculation process. The length of the spanning structure can be 2/3 which is the total length of a single truss spanning. According to the characteristics of light weight, small member section and large single-span flexibility of the pipeline crossing truss structure, the crossing section can adopt a trapezoidal mode with a small front part and a large rear part, the bending resistance is provided, and meanwhile, the self weight of the crossing structure can be effectively controlled, so that the stress of the crossing structure on an additional structure in the whole pushing process can be reduced. The approach span of the pipeline truss is generally welded and manufactured by adopting a planar steel pipe truss mode, and the process can be calculated by adopting typical working conditions that the front end of the approach span of the modeling simulation is separated from one buttress to be pushed to the next buttress and the approach span truss is separated from one buttress to be pushed to the next buttress. The calculation of the jacking force can be determined according to the sum of the rolling friction of the full span and the roller supporting part and the component force of the full span truss in the horizontal direction under the action of gravity in the spanning jacking process under each typical working condition state.
S2, erecting a pushing track on the sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span introduction structure, placing a first spanning truss on the sending rollers of the pushing track, and hoisting the span introduction structure and connecting the front end of the first spanning truss in place.
And S3, connecting the transverse pushing device with the tail end of the first truss spanning truss through the hinge device, starting the transverse pushing device, and pushing and sending the first truss spanning truss and the span introduction structure to a spanning section between the first truss buttress and the second truss buttress through the transverse pushing device.
S4, placing the second spanning truss on a sending roller of the pushing track, connecting the second spanning truss with the first spanning truss through a temporary handshake structure, pushing and sending the second spanning truss to a spanning section between the first truss pier and the second truss pier by using a transverse pushing device, pulling the spanning truss back to a sending platform by using the transverse pushing device and pushing and sending again if the spanning truss deviates more than 30 degrees in the upstream direction in the pushing and sliding process, and moving the transverse pushing device by a preset stroke in the upstream direction after the spanning truss is pushed to the right position.
And S5, repeating the step S4, continuously connecting other spanning trusses with the last spanning truss in sequence, pushing and sending the other spanning trusses to a spanning section between the first truss pier and the second truss pier, and removing a spanning structure connected with the first spanning truss and a temporary shaking structure connected between every two spanning trusses after all the spanning trusses are pushed and sent to a preset spanning section.
And S6, starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, removing the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
In an embodiment, the process may further comprise the steps of:
s1', according to the span and the weight of the spanning truss and different working conditions of the pushing installation stage, the size of the spanning structure and the pushing force required by the truss structure in each typical pushing installation process are designed and calculated.
S2', erecting a pushing track on a sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span leading structure, connecting upper chord main limbs of each spanning truss through a temporary shaking structure to form a full-span truss, placing the full-span truss on the sending rollers of the pushing track, connecting the transverse pushing device with the tail end of the last spanning truss through a hinge device, and hoisting the span leading structure to be connected with the front end of the first spanning truss in place.
S3', starting a transverse pushing device, controlling a clamping device to clamp a pushing track, pushing and sending a first spanning truss and a leading span structure to a spanning section between a first truss pier and a second truss pier together by using the transverse pushing device, adjusting the offset of the spanning truss in the upward and downward directions in the pushing and sliding process by using a limiting adjusting roller frame if the spanning truss generates an offset smaller than or equal to 30 degrees in the upward and downward directions in the pushing and sliding process, pulling the first spanning truss and the leading span structure back to a sending platform by using the transverse pushing device and pushing and sending again if the spanning truss generates an offset larger than 30 degrees in the upward and downward directions in the pushing and sliding process, after the pushing is in place, controlling the clamping device to loosen the pushing track, and moving the transverse pushing device by a preset stroke in the upstream direction.
And S4 'repeating the step S3', continuously pushing and sending other spanning trusses to the spanning section between the first truss pier and the second truss pier in sequence, and after each spanning truss is pushed and sent to the spanning section between the appointed truss piers, detaching a spanning structure connected with the first spanning truss and a temporary handshake structure connected between the spanning trusses.
And S5', starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, dismantling the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
For example, a certain pipeline truss needs to span a wide river surface continuously, and a large hoisting machine cannot be provided to hoist the traditional pipeline truss spanning structure due to the wide river surface, so that the pushing mode is adopted to carry out operation, and the installation of a truss with the span of 5 m and the total length of 300m is realized by prefabricating on the bank and continuously pushing. Fig. 2 shows a schematic flow chart of an installation process of an oil and gas pipeline truss spanning pushing and slipping system, wherein a1 represents a first truss pier, a2 represents a second truss pier, A3 represents a third truss pier, a4 represents a fourth truss pier, a5 represents a fifth truss pier, a6 represents a sixth truss pier, B1 represents a first spanning truss, B2 represents a second spanning truss, B3 represents a third spanning truss, B4 represents a fourth spanning truss, B5 represents a fifth spanning truss, and C represents a spanning structure.
As shown in fig. 2, the installation process of the oil and gas pipeline truss spanning pushing slip system may include the following steps:
(1) according to the span and the weight of the spanning truss and different working conditions of the pushing installation stage, the size of the spanning structure and the pushing force required by the truss structure in each typical pushing installation process are designed and calculated.
(2) Erecting a pushing track on a sending platform, installing a transverse pushing jack, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a leading structure, placing a first spanning truss B1 on the sending rollers of the pushing track, and hoisting the leading structure C and the front end of the first spanning truss B1 by using hoisting equipment to be connected in place (as shown in fig. 2 (a)).
(3) And (3) connecting the transverse pushing jack with the tail end of the first spanning truss B1 through a hinge device, starting the transverse pushing jack, and pushing and sending the first spanning truss B1 and the span-leading structure C to a spanning section between the first truss pier A1 and the second truss pier A2 by utilizing the transverse pushing jack (as shown in fig. 2 (B)). In the pushing process, if the crossing truss deviates more than 30 degrees in the upstream direction and the downstream direction in the pushing and sliding process, the crossing truss is pulled back to the sending platform by using the transverse pushing jack and pushed and sent again, and after the pushing is in place, the transverse pushing jack moves forwards by 800 mm.
(4) A second spanning truss B2 is placed on a sending roller of the pushing track and is connected with a first spanning truss B1 through a temporary shaking structure, a transverse pushing jack is connected with the tail end of the second spanning truss B2 through a hinge device, and then the second spanning truss B2 is pushed and sent to a spanning section between a first truss pier A1 and a second truss pier A2 through the transverse pushing jack, so that the first spanning truss B1 and the leading structure C are pushed and sent to the spanning section between a second truss pier A2 and a third truss pier A3 together (as shown in (C) of FIG. 2). In the pushing process, if the crossing truss deviates more than 30 degrees in the upstream direction and the downstream direction in the pushing and sliding process, the crossing truss is pulled back to the sending platform by using the transverse pushing jack and pushed and sent again, and after the pushing is in place, the transverse pushing jack moves forwards by 800 mm.
(5) A third spanning truss B3 is placed on a sending roller of a pushing track and connected with a second spanning truss B2 through a temporary shaking structure, a transverse pushing jack is connected with the tail end of the third spanning truss B3 through a hinge device, then the third spanning truss B3 is pushed and sent to a spanning section between a first truss pier A1 and a second truss pier A2 through the transverse pushing jack, and therefore the second spanning truss B2 is pushed and sent to the spanning section between the second truss pier A2 and the third truss pier A3, and the first spanning truss B1 and a leading structure C are jointly pushed and sent to the spanning section between the third truss pier A3 and a fourth truss pier A4 (as shown in fig. 2 (d)). In the pushing process, if the crossing truss deviates more than 30 degrees in the upstream direction and the downstream direction in the pushing and sliding process, the crossing truss is pulled back to the sending platform by using the transverse pushing jack and pushed and sent again, and after the pushing is in place, the transverse pushing jack moves forwards by 800 mm.
(6) A fourth spanning truss B4 is placed on a sending roller of the pushing track and is connected with a third spanning truss B3 through a temporary holding structure, the transverse pushing jack is connected with the tail end of a fourth spanning truss B4 through a hinge joint device, then a transverse pushing jack is used for pushing and sending a fourth spanning truss B4 to a spanning section between the first truss pier A1 and the second truss pier A2, therefore, the third spanning truss B3 is pushed and sent to the spanning section between the second truss pier a2 and the third truss pier A3, the second spanning truss B2 is pushed and sent to the spanning section between the third truss pier A3 and the fourth truss pier a4, and the first spanning truss B1 and the lead structure C are jointly pushed and sent to the spanning section between the fourth truss pier a4 and the fifth truss pier a5 (as shown in fig. 2 (e)). In the pushing process, if the crossing truss deviates more than 30 degrees in the upstream direction and the downstream direction in the pushing and sliding process, the crossing truss is pulled back to the sending platform by using the transverse pushing jack and pushed and sent again, and after the pushing is in place, the transverse pushing jack moves forwards by 800 mm.
(7) Placing a fifth spanning truss B5 on a sending roller of a pushing track, connecting the fifth spanning truss B4 with a temporary shaking structure, connecting a transverse pushing jack with the tail end of a fifth spanning truss B5 through a hinge device, pushing and sending a fifth spanning truss B5 to a spanning section between a first truss pier A1 and a second truss pier A2 by using the transverse pushing jack, pushing and sending a fourth spanning truss B4 to a spanning section between a second truss pier A2 and a third truss pier A3, pushing and sending a third spanning truss B3 to a spanning section between A3 and A4 of a third truss, pushing and sending a second spanning truss B2 to a spanning section between A4 of the fourth truss pier and a5, pushing and sending a first spanning truss B2 to a spanning section between a 3985 of the fourth truss pier and a5, pushing and sending a first spanning truss B1 to a spanning section between a third truss pier A3985 and a fifth spanning pier C In the cross-section between piers a6 (as shown in fig. 2 (f)). In the pushing process, if the crossing truss deviates more than 30 degrees in the upstream direction and the downstream direction in the pushing and sliding process, the crossing truss is pulled back to the sending platform by using the transverse pushing jack and pushed and sent again, and after the pushing is in place, the transverse pushing jack moves forwards by 800 mm.
(8) After all the spanning trusses are pushed and sent to the preset spanning section, a spanning structure C connected with a first spanning truss B1 and a temporary holding structure connected between the spanning trusses are removed (as shown in fig. 2 (g)).
(9) And starting the vertical jacking jacks, jacking the crossing truss on each truss buttress by utilizing 2 sets of vertical jacking jacks on each truss buttress, dismantling the sending rollers on each truss buttress, then, falling down the vertical jacking jacks, positioning the crossing truss on the formal supporting seat, and fixedly connecting the crossing truss with the supporting seat (as shown in fig. 2 (g)).
In summary, the beneficial effects of the invention can include at least one of the following:
(1) the crossing of the oil and gas pipeline truss has the characteristic of smaller section, the total width span ratio (for example, the width span ratio of the crossing of the pipeline truss is 1/100-1/25) is greatly smaller than that of a road truss and a railway truss (for example, the width span ratio of the crossing of the pipeline truss is larger than 1/20), so the structure flexibility of the crossing of the oil and gas pipeline truss is larger, the invention realizes the smooth pushing of the truss at the design position of the truss pier through a cross-leading structure and a transverse pushing device, and simultaneously, in order to adapt to the flexible characteristic of the crossing truss in the pushing process and increase the safety control capability, the transverse pushing device adopted by the invention has the pushing effect and can also keep the pulling effect, can be adjusted according to the deviation of the upstream direction and the downstream direction in the pushing process of the flexible truss, and ensures that the truss can be accurately positioned at the design position of the truss pier, in addition, the limiting and adjusting roller frame provided by the invention can also be adjusted according to the upstream and downstream direction offset in the pushing process of the flexible truss, so that the truss is always in the correct direction in the pushing process.
(2) The pipeline crossing pushing system can combine the clamping base connected with the pushing track through the transverse pushing device and the hinge device connected with the tail of the crossing truss through the transverse pushing device, and can combine the stress condition of the crossing structure in the pushing process to play a role in reverse stabilization under the action of pushing force and pulling force.
(3) The pipeline crossing pushing system can quickly and economically finish oil and gas pipeline truss crossing construction in narrow deep valleys or wide rivers, and can effectively solve the technical problem that large-scale hoisting equipment cannot be effectively provided for truss hoisting operation by adopting a traditional method when a truss is erected on the narrow deep valleys with the width-depth ratio of less than 1:2 or the wide rivers with the width-depth ratio of more than 1:2 for crossing.
(4) The invention can meet the requirement of safe installation of the truss, reduce the construction of the approach road and temporary land consumption and reduce the influence on the environment.
(5) The method can provide reference for project grindable routing and site selection work, and the applicability of pipeline installation in mountainous areas is expanded.
Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (10)
1. A pipeline crossing pushing system for narrow deep valleys or wide rivers is characterized by comprising a sending platform, a pushing track, a crossing guiding structure, a plurality of temporary holding structures, a transverse pushing device, a hinging device, a plurality of vertical lifting devices and a plurality of sending rollers, wherein,
the sending platform is arranged on one side of a narrow valley with the width-depth ratio smaller than 1:2 or a wide river with the width-depth ratio larger than 1:2, is close to the first truss pier and is provided with a working surface parallel to the upper surface of the first truss pier;
the pushing track is laid on the sending platform and can provide a sliding track for the spanning truss to move from the sending platform to the first truss pier;
the span structure is provided with a first end connected with the first span truss and a second end contacted with the truss pier, and the height of the span structure is gradually reduced from the first end to the second end;
the temporary handshake structure can connect the upper chord main limb of each spanning truss to transfer bending moment;
the transverse pushing device is connected to the pushing track, can provide horizontal pushing force in the upstream direction for the spanning truss so that the spanning truss and the span-leading structure can sequentially slide through the truss buttresses along a preset route, and can also provide horizontal pulling force in the downstream direction for the spanning truss so as to adjust the position offset of the spanning truss and the span-leading structure in the pushing sliding process;
the hinge device is connected between the transverse pushing device and the tail end of the last truss spanning truss, and can transmit thrust to adjust the deviation of the spanning truss in the upward and downward directions in the pushing and sliding processes under the condition that the transverse pushing device provides horizontal thrust in the upward and downward directions for the spanning truss;
the plurality of vertical jacking devices are respectively arranged on the left side and the right side of the top of each truss pier and can provide vertical upward or downward thrust for the spanning truss, so that the spanning truss can be vertically located on the supporting seat of each truss pier;
the plurality of sending rollers are detachably connected to the left side and the right side of the pushing track and the left side and the right side of the top of each truss buttress respectively.
2. The pipe crossing pushing system for narrow deep valleys or wide rivers according to claim 1, wherein the span of the crossing truss is 50-90 m, the width is less than 3m, the height is less than 4m, the self weight of the crossing truss is 30-100t, and the distance between truss buttresses arranged in the narrow deep valley or wide river with the width-to-depth ratio of less than 1:2 is greater than 1:2 and is less than or equal to 90 m.
3. The pipe spanning jacking system for narrow deep valleys or wide rivers according to claim 1, wherein the pipe spanning jacking system comprises a plurality of limiting adjustment roller frames, which are respectively disposed at both upstream and downstream sides of the top of each truss pier, and can adjust the offset of the spanning truss in the upstream and downstream directions during jacking slip.
4. The pipe spanning jacking system for narrow deep valleys or wide rivers according to claim 1, wherein the pipe spanning jacking system comprises a clamping base which is disposed on the jacking track and connected with the lateral jacking device, and which can clamp the jacking track to reversely stabilize the spanning truss in the case that the lateral jacking device provides a horizontal pulling force in a downstream direction to the spanning truss.
5. The pipe spanning pushing system for narrow deep valleys or wide rivers according to claim 1, wherein the pipe spanning pushing system comprises a clamping device, the transverse pushing device is connected with the pushing track through the clamping device, the clamping device can clamp the pushing track in the process that the transverse pushing device pushes each spanning truss, and the pushing track can be loosened after the transverse pushing device pushes each spanning truss in place.
6. The pipe-over jacking system for narrow deep valleys or wide rivers of claim 1, wherein said lateral jacking device comprises a jacking jack.
7. The pipe-spanning jacking system for narrow deep valleys or wide rivers according to claim 1, wherein said vertical jacking device comprises a jacking jack.
8. The pipe-spanning jacking system for narrow deep valleys or wide rivers of claim 1, wherein said temporary gripping structure is a seamless steel pipe or a section steel.
9. A process for a pipe-over jacking system for narrow deep valleys or wide rivers, comprising the steps of:
s1, designing and calculating the size of the span-leading structure and the required jacking force of the truss structure in each typical jacking installation process according to the span and the weight of the span-crossing truss and different working conditions of the jacking installation stage;
s2, erecting a pushing track on the sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span introduction structure, placing a first spanning truss on the sending rollers of the pushing track, and hoisting the span introduction structure and connecting the front end of the first spanning truss in place;
s3, connecting the transverse pushing device with the tail end of the first truss spanning truss through the hinge device, starting the transverse pushing device, and pushing and sending the first truss spanning truss and the span introduction structure to a spanning section between the first truss buttress and the second truss buttress through the transverse pushing device;
s4, placing a second spanning truss on a sending roller of the pushing track, connecting the second spanning truss with the first spanning truss through a temporary handshake structure, pushing and sending the second spanning truss to a spanning section between a first truss pier and a second truss pier by using a transverse pushing device, pulling the spanning truss back to a sending platform by using the transverse pushing device and pushing and sending again if the spanning truss deviates more than 30 degrees in the upstream direction in the pushing and sliding process, and moving the transverse pushing device by a preset stroke in the upstream direction after the spanning truss is pushed to the right position;
s5, repeating the step S4, continuously connecting other spanning trusses with the last spanning truss in sequence, pushing and sending the trusses to a spanning section between a first truss pier and a second truss pier, and removing a spanning structure connected with the first spanning truss and a temporary shaking structure connected between every two spanning trusses after all spanning trusses are pushed and sent to a preset spanning section;
and S6, starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, removing the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
10. The process for a pipe-over-pushing system for narrow deep valleys or wide rivers according to claim 9, further comprising the steps of:
s1', designing and calculating the size of the span-leading structure and the required jacking force of the truss structure in each typical jacking installation process according to the span and the weight of the span-crossing truss and different working conditions of the jacking installation stage;
s2', erecting a pushing track on a sending platform, installing a transverse pushing device, installing a plurality of sending rollers on two sides of the pushing track and the top of each truss pier, prefabricating a spanning truss and a span leading structure, connecting upper chord main limbs of each spanning truss through a temporary shaking structure to form a full-span truss, placing the full-span truss on the sending rollers of the pushing track, connecting the transverse pushing device with the tail end of the last spanning truss through a hinge device, and hoisting the span leading structure to be connected with the front end of the first spanning truss in place;
s3', starting a transverse pushing device, controlling a clamping device to clamp a pushing track, pushing and sending a first spanning truss and a leading span structure to a spanning section between a first truss pier and a second truss pier through the transverse pushing device, adjusting the offset of the spanning truss in the upstream and downstream directions in the pushing and sliding process through a limiting adjusting roller frame if the spanning truss generates an offset smaller than or equal to 30 degrees in the upstream and downstream directions in the pushing and sliding process, pulling the first spanning truss and the leading span structure back to a sending platform through the transverse pushing device and pushing and sending again if the spanning truss generates an offset larger than 30 degrees in the upstream and downstream directions in the pushing and sliding process, and controlling the clamping device to loosen the pushing track after the pushing is in place, and moving the transverse pushing device for a preset stroke in the upstream direction;
s4 'and repeating the step S3', continuously pushing and sending other spanning trusses to a spanning section between the first truss pier and the second truss pier in sequence, and after each spanning truss is pushed and sent to the spanning section between the appointed truss piers, detaching a spanning structure connected with the first spanning truss and a temporary handshake structure connected between the spanning trusses;
and S5', starting the vertical jacking device, jacking the crossing truss on each truss pier by using the vertical jacking device, dismantling the sending rollers on each truss pier, vertically positioning the crossing truss on the supporting seat of each truss pier by using the vertical jacking device, and fixedly connecting the crossing truss with the supporting seat.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802860A (en) * | 2021-10-29 | 2021-12-17 | 中石化石油工程技术服务有限公司 | Truss crossing, pushing, installing and constructing method |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278114A (en) * | 2002-03-26 | 2003-10-02 | Nippon Sharyo Seizo Kaisha Ltd | Incremental launching method for bridge girder |
| JP2004107972A (en) * | 2002-09-18 | 2004-04-08 | Mitsubishi Heavy Ind Ltd | Launching method and launching machine for bridge |
| RU2242559C1 (en) * | 2004-02-19 | 2004-12-20 | Открытое акционерное общество "Мостотрест" | Method for cyclic movement of solid reinforced concrete bridge span in longitudinal direction |
| CN201574358U (en) * | 2009-11-24 | 2010-09-08 | 中交第二航务工程局有限公司 | Walking type translation thruster |
| CN102199915A (en) * | 2010-03-23 | 2011-09-28 | 柳州欧维姆机械股份有限公司 | Walking type incremental launching device and bridge incremental launching construction method using same |
| CN102493348A (en) * | 2011-12-14 | 2012-06-13 | 中铁大桥局股份有限公司 | Transverse limitation and correction device for incremental launching of bridge |
| CN103266566A (en) * | 2013-04-24 | 2013-08-28 | 中交武汉港湾工程设计研究院有限公司 | Walk-type continuous pushing system and construction method |
| CN203498761U (en) * | 2013-09-16 | 2014-03-26 | 中铁十七局集团第二工程有限公司 | Lateral position-specified and deviation rectifying device for box girder pushing |
| CN203583371U (en) * | 2013-11-01 | 2014-05-07 | 鞍山东方钢构桥梁有限公司 | Box girder self-locking synchronous pushing system of variable-cross-section cantilever bridge |
| CN205711778U (en) * | 2016-06-14 | 2016-11-23 | 郑州铁路工程有限公司 | A kind of lateral limiting device for continuous beam pushing tow and system |
| CN206784190U (en) * | 2017-06-09 | 2017-12-22 | 中铁建大桥工程局集团第五工程有限公司 | Large-span Steel Box Beam liftable self-propelled successively incremeantal launching method system |
| CN207079483U (en) * | 2017-08-08 | 2018-03-09 | 云南公投建设集团第六工程有限公司 | Guiding and deviation correcting device available for Large-span Steel Box Beam construction |
| CN108867383A (en) * | 2018-06-25 | 2018-11-23 | 中铁三局集团有限公司 | A kind of across the steel case trusses cable-stayed bridge rapid constructing method of double tower five |
| CN108978496A (en) * | 2018-08-07 | 2018-12-11 | 湖南联智智能科技有限公司 | A kind of bridge intelligence incremental launching construction system and its push construction method |
| CN110761201A (en) * | 2019-10-31 | 2020-02-07 | 中交第二航务工程局有限公司 | Steel approach bridge pushing equipment and construction method adopting same |
| CN210152292U (en) * | 2019-05-28 | 2020-03-17 | 湖南省第四工程有限公司 | Horizontal sliding device |
| CN210341678U (en) * | 2019-07-23 | 2020-04-17 | 安徽省路港工程有限责任公司 | Pushing device for construction of large-span steel arch bridge of inland waterway |
| CN111749145A (en) * | 2019-03-27 | 2020-10-09 | 中亿丰建设集团股份有限公司 | Incremental launching construction method |
| CN112195795A (en) * | 2020-10-30 | 2021-01-08 | 中铁大桥局集团第八工程有限公司 | Continuous beam pushing device, using method and construction method of continuous beam |
-
2021
- 2021-04-30 CN CN202110481516.2A patent/CN113513630A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278114A (en) * | 2002-03-26 | 2003-10-02 | Nippon Sharyo Seizo Kaisha Ltd | Incremental launching method for bridge girder |
| JP2004107972A (en) * | 2002-09-18 | 2004-04-08 | Mitsubishi Heavy Ind Ltd | Launching method and launching machine for bridge |
| RU2242559C1 (en) * | 2004-02-19 | 2004-12-20 | Открытое акционерное общество "Мостотрест" | Method for cyclic movement of solid reinforced concrete bridge span in longitudinal direction |
| CN201574358U (en) * | 2009-11-24 | 2010-09-08 | 中交第二航务工程局有限公司 | Walking type translation thruster |
| CN102199915A (en) * | 2010-03-23 | 2011-09-28 | 柳州欧维姆机械股份有限公司 | Walking type incremental launching device and bridge incremental launching construction method using same |
| CN102493348A (en) * | 2011-12-14 | 2012-06-13 | 中铁大桥局股份有限公司 | Transverse limitation and correction device for incremental launching of bridge |
| CN103266566A (en) * | 2013-04-24 | 2013-08-28 | 中交武汉港湾工程设计研究院有限公司 | Walk-type continuous pushing system and construction method |
| CN203498761U (en) * | 2013-09-16 | 2014-03-26 | 中铁十七局集团第二工程有限公司 | Lateral position-specified and deviation rectifying device for box girder pushing |
| CN203583371U (en) * | 2013-11-01 | 2014-05-07 | 鞍山东方钢构桥梁有限公司 | Box girder self-locking synchronous pushing system of variable-cross-section cantilever bridge |
| CN205711778U (en) * | 2016-06-14 | 2016-11-23 | 郑州铁路工程有限公司 | A kind of lateral limiting device for continuous beam pushing tow and system |
| CN206784190U (en) * | 2017-06-09 | 2017-12-22 | 中铁建大桥工程局集团第五工程有限公司 | Large-span Steel Box Beam liftable self-propelled successively incremeantal launching method system |
| CN207079483U (en) * | 2017-08-08 | 2018-03-09 | 云南公投建设集团第六工程有限公司 | Guiding and deviation correcting device available for Large-span Steel Box Beam construction |
| CN108867383A (en) * | 2018-06-25 | 2018-11-23 | 中铁三局集团有限公司 | A kind of across the steel case trusses cable-stayed bridge rapid constructing method of double tower five |
| CN108978496A (en) * | 2018-08-07 | 2018-12-11 | 湖南联智智能科技有限公司 | A kind of bridge intelligence incremental launching construction system and its push construction method |
| CN111749145A (en) * | 2019-03-27 | 2020-10-09 | 中亿丰建设集团股份有限公司 | Incremental launching construction method |
| CN210152292U (en) * | 2019-05-28 | 2020-03-17 | 湖南省第四工程有限公司 | Horizontal sliding device |
| CN210341678U (en) * | 2019-07-23 | 2020-04-17 | 安徽省路港工程有限责任公司 | Pushing device for construction of large-span steel arch bridge of inland waterway |
| CN110761201A (en) * | 2019-10-31 | 2020-02-07 | 中交第二航务工程局有限公司 | Steel approach bridge pushing equipment and construction method adopting same |
| CN112195795A (en) * | 2020-10-30 | 2021-01-08 | 中铁大桥局集团第八工程有限公司 | Continuous beam pushing device, using method and construction method of continuous beam |
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| CN113802860A (en) * | 2021-10-29 | 2021-12-17 | 中石化石油工程技术服务有限公司 | Truss crossing, pushing, installing and constructing method |
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