CN116876371A - Bridge support adjusting device and method for bridge construction - Google Patents
Bridge support adjusting device and method for bridge construction Download PDFInfo
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- CN116876371A CN116876371A CN202311125990.7A CN202311125990A CN116876371A CN 116876371 A CN116876371 A CN 116876371A CN 202311125990 A CN202311125990 A CN 202311125990A CN 116876371 A CN116876371 A CN 116876371A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The application relates to a bridge support adjusting device and a bridge support adjusting method for bridge construction, which belong to the technical field of bridge engineering and comprise a bottom platform, a stay cable steel frame structure, a central load table, a hydraulic adjusting cylinder, a pressure-relieving supporting mechanism, a supporting platform and a height fine adjusting mechanism. According to the bridge support adjusting device and the bridge support adjusting method for bridge construction, through the height fine adjustment mechanism, the arranged adjusting push block can be matched with the heightening seat to serve as the heightening block of the adjusting block, fine adjustment of the support height is further completed, meanwhile, the arranged adjusting push block can be replaced according to actual use conditions, fine adjustment heightening of different heights is further achieved, a flexible height adjustment scheme can be provided to adapt to different conditions, stability and safety of a bridge are guaranteed, meanwhile, cost in bridge construction and maintenance can be reduced through the use of the height fine adjustment mechanism, and compared with a traditional adjusting method, if a temporary support or a bridge structure is used, the height fine adjustment mechanism can more economically complete a height adjustment task.
Description
Technical Field
The application relates to the technical field of bridge engineering, in particular to a bridge support adjusting device and a bridge support adjusting method for bridge construction.
Background
With the progress of the current living standard and the development of technology, the requirements of people on travel are higher and higher, the basic construction of bridges, roads and the like is widely distributed, and the bridges are generally structures which are erected on rivers, lakes and seas and enable vehicles, pedestrians and the like to pass smoothly. In order to adapt to the traffic industry of modern high-speed development, bridges are also spreading to span mountain stream, poor geology or buildings which are erected to meet other traffic needs and enable the traffic to be more convenient. The bridge is generally composed of an upper structure, a lower structure, a support and an accessory structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting position of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structure is a bridge head butt strap, a conical slope protection, a shore protection, a diversion project and the like, and the bridge can greatly facilitate travel of people and improve travel efficiency.
The bridge is often required to carry out auxiliary support adjustment to the bottom or the outside of the bridge in the construction process, the common bridge support is mostly to complete the support of the bridge body through setting up steel frame structure cooperation support, when the bridge section is in support construction, in order to be able to cope with the different horizontal heights between bridge and the ground and the high influence that ground subsides brought, steel frame is often required to independently support the bridge section, and the steel frame structure after setting up is difficult to finely tune the height of the bridge section, make steel frame structure set up very inconvenient, support effect is poor in the construction, it is difficult to calibrate according to the level of the bridge body, influence construction quality, inconvenience moves the assigned position, simultaneously, current steel frame bridge body support lacks to draw to one side, and lack the strutting arrangement who draws to one side when the transverse and longitudinal load of bridge should be dealt with, stability is unable to produce sufficient shear stress and pulling force and balanced bridge load that receives, when meetting weather, the strutting arrangement that lacks to draw to one side can lead to the support frame to warp, and adjust speed is slower, and then influence the stable support of bridge, and influence frame life, therefore, a support device and the bridge is put forward and its use and its method to solve the above-mentioned problem.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a bridge support adjusting device for bridge construction and a method thereof, which have the advantages of stable support, capability of finely adjusting the support height according to different ground heights, and the like, and solve the problems that the existing bridge support device is unstable in support and is difficult to adapt to adjustment when the ground heights change.
In order to achieve the above purpose, the present application provides the following technical solutions: a bridge support adjusting device and a method thereof for bridge construction comprise a bottom platform, a stay cable steel frame structure, a central load table, a hydraulic adjusting cylinder, a pressure-relieving supporting mechanism, a supporting platform and a height fine-tuning mechanism;
the bottom platform is borne on the ground, two groups of stay cable steel frame structures are arranged on the upper end face of the bottom platform in parallel, the central load table is arranged between the two groups of stay cable steel frame structures, two sides of the central load table are propped against the stay cable steel frame structures, and a plurality of hydraulic adjusting cylinders are arranged at equal intervals along the transverse axis of the central load table;
the pressure-relieving supporting mechanisms are equidistantly arranged at the upper ends of the two groups of stay cable steel frame structures along the transverse axis of the central load table;
the upper end surfaces of the pressure-relieving supporting mechanisms on the same side are respectively provided with a cross beam, and the two cross beams and the output ends of the hydraulic adjusting cylinders jointly support the supporting platform;
the height fine adjustment mechanisms are equidistantly arranged on the upper end face of the supporting platform along the transverse axis of the supporting platform.
Further, the stay cable steel frame structure is fixed in including being fixed in the first keel frame of bottom platform up end, first keel frame up end equidistance welding is equipped with a plurality of vertical keel frames, and a plurality of vertical keel frame up end has supported the second keel frame jointly.
Further, a plurality of vertical keel frames and second keel frames and first keel frames at two ends of the vertical keel frames form a plurality of rectangular frames, the four corners in the same rectangular frame are fixedly provided with basket bolts, and a steel cable is arranged between the two opposite basket bolts along the central oblique angle in a pulling manner.
Further, two groups of triangular supports are arranged on one side of the joint of the second keel frame, the first keel frame and the vertical keel frame, and the two groups of triangular supports are arranged up and down and respectively propped against one side of the central load table.
Further, a plurality of through grooves are formed in the central load table.
Further, the pressure-relieving supporting mechanism comprises a pressure seat fixed on the second keel frame, holes are formed in two sides of the pressure seat in a penetrating mode, positioning bolts are arranged in the holes, and the positioning bolts penetrate through the second keel frame and the pressure seat.
Further, the upper end face of the pressing seat is provided with a plurality of positioning shafts, a plurality of discs are fixedly arranged on the outer circumferential surfaces of the positioning shafts, a plurality of support seats are arranged on the outer circumferential surfaces of the positioning shafts in a sliding mode, and nuts are connected to the top ends of the positioning shafts in a threaded mode.
Further, the height fine adjustment mechanism comprises a supporting seat fixed on the upper end face of the supporting platform, a guide rod cylinder is fixed on the upper end face of the supporting seat through a cylinder seat, a cylinder push rod is fixedly connected to the output end of the guide rod cylinder, an adjusting push block is fixedly arranged at the other end of the cylinder push rod through a bolt piece, and a chamfer is arranged at the corner of the end part of the adjusting push block and is provided with round corner treatment.
Further, the supporting seat up end is fixed and is equipped with two reference columns, two reference column outer periphery all slides and is equipped with the sliding sleeve, two the outside joint of sliding sleeve is fixed with a flat seat jointly, flat seat up end is fixed and is equipped with the regulating block, flat seat lower terminal surface is fixed and is equipped with the bed hedgehopping seat, bed hedgehopping seat tip corner has the chamfer setting and has the fillet processing simultaneously, bed hedgehopping seat with the regulation push block is perpendicular relative.
On the basis, the application also provides a bridge support adjusting device adjusting method for bridge construction, which comprises the following steps:
s1, constructing a stay cable steel frame structure, fixing the stay cable steel frame structure at a joint by welding, and determining the minimum safety coefficient and the load requirement required by the stay cable steel frame structure according to the bridge design standard requirement to determine the number of steel strands used;
s2, when the weight of the bridge acts on the supporting platform and the height fine adjustment mechanism, the supporting platform can be pressed downwards, partial bearing force brought by the downward pressing of the bridge to the stay cable steel frame structure can be reduced through the bearing deformation of the pressure-relieving supporting mechanism, and then the load pressure acted on the stay cable steel frame structure is reduced;
s3, providing an external air source and an output pressure value for the arranged hydraulic adjusting cylinder, so that a hydraulic guide rod of the arranged hydraulic adjusting cylinder can be matched with a central load table to stably support the bridge main body;
and S4, providing an external air source for the height fine adjustment mechanism, so that the height fine adjustment mechanism can realize lifting change of the height, and further fine adjustment of the supporting height is realized by matching with the hydraulic adjusting cylinder, so that the supporting height is adjusted.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. according to the bridge support adjusting device and the method for bridge construction, through mutual matching of the components in the inclined cable steel frame structure, the inclined cable traction device can be used for adjusting the size and the direction of traction force, so that the bridge support frame structure can be more flexibly adapted to different load conditions, the design of the bridge support frame can be effectively optimized, the bearing capacity and the safety of the bridge support frame are improved, the inclined cable force can be adjusted according to actual conditions, the bridge support frame can better adapt to the influence of external environments such as earthquake, wind load and temperature change, meanwhile, the inclined cable traction device can be used for realizing stable inclined cable traction on the inclined cable steel frame structure, the inclined cable traction can be used for effectively reducing the frame deformation in the inclined cable steel frame structure, the inclined cable steel frame structure can keep smaller deformation when bearing load, the service life and the safety of the bridge support frame can be improved, the influence of the bridge load on the frame can be reduced, the repeated utilization of the frame is higher, the horizontal force and the vertical force of the inclined cable support frame can be effectively balanced, the inclined cable support frame can be particularly used for providing a stable inclined cable, and the vibration stability can be better provided for the whole inclined cable, and the vibration stability can be better supported in the whole bridge.
2. According to the bridge support adjusting device and the bridge support adjusting method for bridge construction, through interaction cooperation of the components in the set pressure-relieving supporting mechanism, load pressure on the stayed cable steel frame structure is reduced, a steel cable in the stayed cable steel frame structure is matched to draw in a stayed mode, load values born by the set stayed cable steel frame structure are small, and accordingly the fact that the stayed cable steel frame structure bears stably on two sides is ensured, meanwhile, a plurality of groups of hydraulic adjusting cylinders are arranged on a central load table, an external air source and an output pressure value are provided for the set hydraulic adjusting cylinders, a bridge main body can be stably supported by the hydraulic guide rods of the set hydraulic adjusting cylinders in cooperation with the central load table, and meanwhile the load is absorbed by the set pressure-relieving supporting mechanism, so that the whole bridge can be better supported by the supporting device.
3. According to the bridge support adjusting device and the bridge support adjusting method for bridge construction, through mutual movement coordination of a plurality of components in the height fine adjustment mechanism, the arranged adjusting pushing block can be matched with the heightening seat to serve as the heightening block of the adjusting block, fine adjustment of the support height is further completed, meanwhile, the arranged adjusting pushing block can be replaced according to actual use conditions, fine adjustment heightening of different heights is further achieved, a flexible height adjusting scheme can be provided, so that different conditions are adapted, stability and safety of a bridge are ensured, meanwhile, cost in bridge construction and maintenance can be reduced through the use of the height fine adjustment mechanism, and compared with a traditional adjusting method, if a temporary support or a bridge structure is used, the height fine adjustment mechanism can more economically complete a height adjusting task.
Drawings
Figure 1 is a schematic diagram of the overall construction structure of the present application;
FIG. 2 is a schematic diagram of the overall construction side view structure of the application;
FIG. 3 is a schematic view of a support platform and height fine adjustment mechanism of the present application;
FIG. 4 is a schematic view of the structure of the center load table and the hydraulic pressure adjusting cylinder of the present application;
FIG. 5 is a schematic view of the construction of the stay cable steel frame of the present application;
FIG. 6 is a schematic view of a structure of a pressure relief support mechanism according to the present application;
FIG. 7 is a schematic view of the overall installation structure of the height fine adjustment mechanism of the present application;
FIG. 8 is a schematic side view of the height adjustment mechanism of the present application;
fig. 9 is a schematic diagram showing a split structure of the height fine adjustment mechanism of the present application.
In the figure: 1. a bottom platform; 2. a stay cable steel frame structure; 20. a first keel frame; 21. a second keel frame; 22. a vertical keel frame; 23. a basket bolt; 24. a wire rope; 25. triangular support frames; 3. a center load table; 31. a through groove; 4. a hydraulic pressure adjusting cylinder; 5. a pressure-relieving supporting mechanism; 50. a cross beam; 51. pressing a base; 52. positioning bolts; 53. positioning a shaft; 54. a disc; 55. a support seat; 56. a nut; 6. a support platform; 7. a height fine adjustment mechanism; 71. a support base; 72. a guide rod cylinder; 73. a cylinder push rod; 74. adjusting the pushing block; 75. a limiting block; 76. positioning columns; 77. a sliding sleeve; 78. a flat seat; 79. an adjusting block; 791. raising the seat.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-3, a bridge support adjusting device for bridge construction and a method thereof in the present embodiment include a bottom platform 1, a stay cable steel frame structure 2, a center load table 3, a hydraulic adjusting cylinder 4, a pressure-reducing supporting mechanism 5, a supporting platform 6, and a height fine adjusting mechanism 7;
the bottom platform 1 is borne on the ground, two groups of stay cable steel frame structures 2 are arranged on the upper end face of the bottom platform 1 in parallel, the central load table 3 is arranged between the two groups of stay cable steel frame structures 2, two sides of the central load table are propped against the stay cable steel frame structures 2, and a plurality of hydraulic adjusting cylinders 4 are equidistantly arranged along the transverse axis of the central load table 3;
the plurality of pressure-relieving supporting mechanisms 5 are equidistantly arranged at the upper ends of the two groups of stay cable steel frame structures 2 along the transverse axis of the central load table 3;
the upper end surfaces of the pressure-relieving supporting mechanisms 5 on the same side are respectively provided with a cross beam 50, and the two cross beams 50 and the output ends of the hydraulic adjusting cylinders 4 jointly support the supporting platform 6;
the height fine adjustment mechanisms 7 are equidistantly arranged on the upper end face of the supporting platform 6 along the transverse axis of the supporting platform 6.
In this embodiment, can be used to stable support the bridge section through the stay cable steel frame structure 2 that sets up, through its design of drawing the cable wire to one side, make bridge strutting arrangement when supporting, can carry out better structural adjustment and adaptability to braced frame, can carry out the adjustment of diagonal tension according to actual conditions, make braced frame adapt to the influence of external environment such as earthquake better, wind load and temperature variation, through the cooperation of the central load platform 3 of setting, hydraulic pressure adjusting cylinder 4, through providing external air supply and output pressure value for the hydraulic pressure adjusting cylinder 4 of setting, make the hydraulic guide arm of the hydraulic pressure adjusting cylinder 4 of setting can cooperate central load platform 3 to carry out stable support with the bridge main part, two sets of stay cable steel frame structures 2 that the cooperation set up simultaneously support to drawing to one side, make braced frame can be better support the bridge, reduce the oppression of bridge load to the stay cable steel frame structure 2 simultaneously, the stress bearing of braced frame both sides, the bridge increases, can be used to the bridge when the ground settlement is carried out to the fine setting or the bridge height change through the fine setting mechanism 7.
Referring to fig. 5, in order to achieve better cable-stayed traction support for the support frame, the stay cable steel frame structure 2 in the embodiment includes a first keel frame 20 fixed on the upper end surface of the bottom platform 1, a plurality of vertical keel frames 22 are welded on the upper end surface of the first keel frame 20 at equal intervals, and a second keel frame 21 is supported on the upper end surfaces of the plurality of vertical keel frames 22;
a plurality of vertical keel frames 22, a plurality of rectangular frames are formed among the second keel frames 21 and the first keel frames 20 which are positioned at the two ends of the vertical keel frames, the four corners in the same rectangular frame are fixedly provided with basket bolts 23, and a steel cable 24 is arranged between the two opposite basket bolts 23 along the central oblique angle in a diagonal drawing manner;
two groups of triangular support frames 25 are arranged on one side of the joint of the second keel frame 21 and the first keel frame 20 and the vertical keel frame 22, and the two groups of triangular support frames 25 are arranged up and down and respectively propped against one side of the central load table 3.
In this embodiment, through setting up first keel frame 20, second keel frame 21 and using the welding to accomplish fixedly in the junction, through welding a plurality of vertical keel frames 22 between the two, simultaneously through punching fixed basket bolt 23 in the rectangular frame that vertical keel frame 22 formed, pull the setting stranded cable wire 24 between two sets of basket bolts 23 that diagonal is opposite, the cable wire 24 of setting can be according to bridge design standard, required minimum factor of safety, the wire strand number that needs to confirm to use, cable-stayed traction to cable wire 24 has been realized to the stable cable-stayed traction of cable-stayed steel frame structure 2, cable-stayed traction can effectively reduce the frame deformation in the cable-stayed steel frame structure 2, make cable-stayed steel frame structure 2 keep less deformation when bearing the load, not only can improve bridge braced frame's life and security, can also reduce bridge load's influence to the frame, make the reuse of frame higher.
Referring to fig. 4 and 6, in order to stably support the bridge section, a plurality of through slots 31 are formed on the central load table 3 in the embodiment;
the pressure-relieving supporting mechanism 5 comprises a pressure seat 51 fixed on the second keel frame 21, holes are formed in two sides of the pressure seat 51 in a penetrating mode, positioning bolts 52 are arranged in the holes, and the positioning bolts 52 penetrate through the second keel frame 21 and the pressure seat 51;
the upper end face of the pressing seat 51 is provided with a plurality of positioning shafts 53, the outer circumferential surfaces of the positioning shafts 53 are fixedly provided with a plurality of discs 54, the outer circumferential surfaces of the positioning shafts 53 are provided with a support seat 55 in a sliding mode, and the top end of the positioning shaft 53 is connected with a nut 56 in a threaded mode.
In this embodiment, through the fixed of the pressure seat 51 that sets up on the second keel frame 21, the support seat 55 that the cooperation slides and sets up, when the weight of bridge is acted on supporting platform 6, high fine setting mechanism 7, supporting platform 6 that sets up will push down, and then make support seat 55 push down, the bottom surface of support seat 55 can act on the video disc 54 and make the video disc 54 warp this moment, deformation through video disc 54, make the bearing that acts on pressure seat 51 reducible partly, and then make the load pressure that acts on to-be-stayed cable steel frame structure 2 reduce, cooperate cable wire in to-be-stayed traction in to-be-stayed cable steel frame structure 2, make the load value that to be-suffered by to-be-stayed cable steel frame structure 2 less, and then ensured to bear stably in both sides of to-be-cable steel frame structure 2, set up the central load platform 3 of while sets up multiunit hydraulic pressure adjustment cylinder 4, through providing external air supply and output pressure value for hydraulic guide arm that sets up hydraulic pressure adjustment cylinder 4 can cooperate central load platform 3 to carry out stable support main part, support device to the bridge, the whole load that supports 5 that can be better to support to the whole supporting device that supports to the load that supports to the support.
Referring to fig. 7-9, in order to achieve fine adjustment of the supporting height of the bridge section, the fine adjustment mechanism 7 in this embodiment includes a supporting seat 71 fixed on the upper end surface of the supporting platform 6, a guide rod cylinder 72 is fixed on the upper end surface of the supporting seat 71 through a cylinder seat, the output end of the guide rod cylinder 72 is fixedly connected with a cylinder push rod 73, the other end of the cylinder push rod 73 is fixedly provided with an adjusting push block 74 through a bolt, and corners of the end portions of the adjusting push block 74 are provided with chamfer angles and the chamfer edges are provided with round angle treatment;
the fixed two reference columns 76 that are equipped with of supporting seat 71 up end, the outer periphery of two reference columns 76 all slides and is equipped with sliding sleeve 77, and two sliding sleeve 77 outside joint are fixed with a flat seat 78 jointly, and flat seat 78 up end is fixed to be equipped with regulating block 79, and flat seat 78 lower terminal surface is fixed to be equipped with the bed hedgehopping seat 791, and bed hedgehopping seat 791 tip corner has the chamfer setting and has the fillet processing simultaneously, and bed hedgehopping seat 791 is perpendicular relative with regulating push block 74.
In this embodiment, through the guide rod cylinder 72 disposed on the supporting seat 71, when in use, a user can drive the cylinder push rod 73 and the adjusting push block 74 to push out radially through the output air pressure and the air pressure value for the guide rod cylinder 72, through the heightening seat 791 disposed on the lower end surface of the flat seat 78, when the adjusting push block 74 is pushed out along with the cylinder push rod 73 and until contacting with the heightening seat 791, through the round angle and the chamfer at the corners of the adjusting push block 74, the disposed adjusting push block 74 can push out the heightening seat 791, and cooperates with the sliding sleeve 77 disposed on the two positioning posts 76 in a sliding manner, so that the height lifting of the adjusting block 79 disposed on the upper end surface of the flat seat 78 can be realized, when the adjusting push block 74 moves forward continuously, the disposed adjusting push block 74 can cooperate with the heightening seat 791 as the heightening block of the adjusting block 79, thus completing the fine adjustment of the supporting height, and at the same time the disposed adjusting push block 74 can be replaced according to the actual use condition, thus realizing the fine adjustment of different heights.
On the basis, the application also provides a bridge support adjusting device adjusting method for bridge construction, which comprises the following steps:
s1, constructing a stay cable steel frame structure 2, finishing fixation at a joint by welding, constructing a first keel frame 20 and a second keel frame 21, finishing fixation at the joint by welding, welding a plurality of vertical keel frames 22 between the two, fixing basket bolts 23 in a rectangular frame formed by the vertical keel frames 22 through punching, and traction setting a plurality of steel ropes 24 between two diagonally opposite groups of basket bolts 23, wherein the set steel ropes 24 can determine the required minimum safety coefficient and load requirements according to bridge design standards;
s2, when the weight of the bridge acts on the supporting platform 6 and the height fine adjustment mechanism 7, the supporting platform 6 is arranged to downwards press so as to enable the bracket seat 55 to downwards press, at the moment, the bottom surface of the bracket seat 55 can act on the disc 54 and enable the disc 54 to deform, partial bearing force of the bridge, which is brought by the downwards pressing of the bridge, can be reduced by the bearing deformation of the pressure-relieving supporting mechanism 5, and part of bearing force of the disc 54, which is acted on the pressing seat 51, can be reduced by the deformation of the disc 54, so that the load pressure of the bridge, which is acted on the stayed cable steel frame structure 2, is reduced;
s3, providing an external air source and an output pressure value for the arranged hydraulic adjusting cylinder 4, so that a hydraulic guide rod of the arranged hydraulic adjusting cylinder 4 can be matched with the central load table 3 to stably support the bridge main body;
s4, by providing an external air source for the height fine adjustment mechanism 7, the height fine adjustment mechanism 7 can achieve lifting and changing of the height, and then the hydraulic adjustment cylinder 4 is matched to finely adjust the supporting height, so that the supporting height is adjusted, the guide rod cylinder 72 can drive the cylinder push rod and the adjustment push block 74 to push out radially through one output air pressure and one air pressure value for the guide rod cylinder 72, when the adjustment push block 74 is pushed out along with the cylinder push rod 73 until the adjustment push block is contacted with the heightening seat 791, the heightening seat 791 can be ejected by the set adjustment push block 74 through setting of round corners and chamfers at corners of the adjustment push block 74, and the adjustment push block 79 arranged on the upper end face of the flat seat 78 can achieve lifting and changing of the height in a matched manner by sliding the sliding sleeve 77.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Bridge support adjusting device is used in bridge construction, its characterized in that: the hydraulic pressure adjusting device comprises a bottom platform (1), a stay cable steel frame structure (2), a central load table (3), a hydraulic pressure adjusting cylinder (4), a pressure-relieving supporting mechanism (5), a supporting platform (6) and a height fine-tuning mechanism (7); wherein the method comprises the steps of
The bottom platform (1) is borne on the ground, two groups of stay cable steel frame structures (2) are arranged on the upper end face of the bottom platform (1) in parallel, the center load table (3) is arranged between the two groups of stay cable steel frame structures (2) and two sides of the center load table are propped against the stay cable steel frame structures (2), and a plurality of hydraulic adjusting cylinders (4) are arranged at equal intervals along the transverse axis of the center load table (3);
the pressure-relieving supporting mechanisms (5) are equidistantly arranged at the upper ends of the two groups of stay cable steel frame structures (2) along the transverse axis of the central load table (3);
the upper end surfaces of the pressure-relieving supporting mechanisms (5) on the same side are respectively provided with a cross beam (50), and the two cross beams (50) and the output ends of the hydraulic pressure adjusting cylinders (4) jointly support the supporting platform (6);
the height fine adjustment mechanisms (7) are equidistantly arranged on the upper end face of the supporting platform (6) along the transverse axis of the supporting platform (6).
2. The bridge support adjustment device for bridge construction according to claim 1, wherein: the stay cable steel frame structure (2) comprises a first keel frame (20) fixed on the upper end face of the bottom platform (1), a plurality of vertical keel frames (22) are welded on the upper end face of the first keel frame (20) at equal intervals, and a plurality of second keel frames (21) are supported on the upper end face of the vertical keel frames (22) jointly.
3. The bridge support adjustment device for bridge construction according to claim 2, wherein: a plurality of rectangular frames are formed among the vertical keel frames (22), the second keel frames (21) and the first keel frames (20) which are positioned at two ends of the vertical keel frames, the four corners in the same rectangular frame are fixedly provided with basket bolts (23), and a steel cable (24) is arranged between the two opposite basket bolts (23) along the central oblique angle in a pulling manner.
4. A bridge support adjustment device for bridge construction according to claim 3, wherein: two groups of triangular supports (25) are arranged on one side of the joint of the second keel frame (21), the first keel frame (20) and the vertical keel frame (22), and the two groups of triangular supports (25) are arranged up and down and respectively propped against one side of the central load table (3).
5. The bridge support adjustment device for bridge construction according to claim 1, wherein: a plurality of through grooves (31) are formed in the central load table (3).
6. The bridge support adjustment device for bridge construction according to claim 2, wherein: the pressure-relieving supporting mechanism (5) comprises a pressure seat (51) fixed on the second keel frame (21), holes are formed in two sides of the pressure seat (51) in a penetrating mode, positioning bolts (52) are arranged in the holes, and the positioning bolts (52) penetrate through the second keel frame (21) and the pressure seat (51).
7. The bridge support adjustment device for bridge construction according to claim 6, wherein: the upper end face of the pressing seat (51) is provided with a plurality of positioning shafts (53), a plurality of discs (54) are fixedly arranged on the outer circumferential faces of the positioning shafts (53), a plurality of support seats (55) are slidably arranged on the outer circumferential faces of the positioning shafts (53) together, and nuts (56) are connected to the top ends of the positioning shafts (53) in a threaded mode.
8. The bridge support adjustment device for bridge construction according to claim 1, wherein: the height fine adjustment mechanism (7) comprises a supporting seat (71) fixed on the upper end face of the supporting platform (6), a guide rod cylinder (72) is fixed on the upper end face of the supporting seat (71) through a cylinder seat, a cylinder push rod (73) is fixedly connected to the output end of the guide rod cylinder (72), an adjusting push block (74) is fixedly arranged at the other end of the cylinder push rod (73) through a bolt piece, and chamfering is arranged at the corners of the end portions of the adjusting push block (74) and is carried out at the same time.
9. The bridge support adjustment device for bridge construction according to claim 8, wherein: the supporting seat is characterized in that two positioning columns (76) are fixedly arranged on the upper end face of the supporting seat (71), the outer circumferential faces of the positioning columns (76) are provided with sliding sleeves (77) in a sliding mode, two sliding sleeves (77) are fixedly embedded with a flat seat (78) in the outside, an adjusting block (79) is fixedly arranged on the upper end face of the flat seat (78), a heightening seat (791) is fixedly arranged on the lower end face of the flat seat (78), chamfering is arranged at the corners of the end portions of the heightening seat (791), chamfering is carried out on the edges of the corners of the end portions of the heightening seat, and round corner treatment is carried out on the edges of the corners of the heightening seat, and the heightening seat (791) is perpendicular to the adjusting pushing block (74).
10. The method for adjusting the bridge support adjusting device for bridge construction is realized by using the adjusting device of any one of 1 to 9, and is characterized by comprising the following steps:
s1, constructing a stay cable steel frame structure (2) and fixing the stay cable steel frame structure at a joint by welding, and determining the minimum safety coefficient and load requirement required by the stay cable steel frame structure (2) according to bridge design standard requirements to determine the number of steel strands used;
s2, when the weight of the bridge acts on the supporting platform (6) and the height fine adjustment mechanism (7), the supporting platform (6) can be pressed downwards, and partial bearing force brought by the bridge pressing downwards to the stay cable steel frame structure (2) can be reduced through bearing deformation of the pressure-relieving supporting mechanism (5), so that the load pressure acted on the stay cable steel frame structure (2) is reduced;
s3, providing an external air source and an output pressure value for the arranged hydraulic adjusting cylinder (4) so that a hydraulic guide rod of the arranged hydraulic adjusting cylinder (4) can be matched with the central load table (3) to stably support the bridge main body;
and S4, providing an external air source for the height fine adjustment mechanism (7) to enable the height fine adjustment mechanism (7) to achieve lifting change of the height, and further enabling the height fine adjustment mechanism to cooperate with the hydraulic adjusting cylinder (4) to finely adjust the supporting height so as to achieve adjustment of the supporting height.
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| CN202311125990.7A CN116876371B (en) | 2023-09-04 | 2023-09-04 | Bridge support adjusting device and method for bridge construction |
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| CN202311125990.7A CN116876371B (en) | 2023-09-04 | 2023-09-04 | Bridge support adjusting device and method for bridge construction |
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| CN116876371B (en) | 2023-12-15 |
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Effective date of registration: 20240201 Address after: 272000, No.78 Hongxing East Road, Rencheng District, Jining City, Shandong Province Patentee after: Jining Housing Urban Rural Construction Comprehensive Law Enforcement Detachment Country or region after: China Address before: 272000 No.74, Jihe Road, Rencheng District, Jining City, Shandong Province Patentee before: Jining Construction Engineering Quality Safety Technology Center Country or region before: China |