CN113718640A - Displacement-adjustable cushion block device and application method thereof - Google Patents
Displacement-adjustable cushion block device and application method thereof Download PDFInfo
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- CN113718640A CN113718640A CN202111015720.1A CN202111015720A CN113718640A CN 113718640 A CN113718640 A CN 113718640A CN 202111015720 A CN202111015720 A CN 202111015720A CN 113718640 A CN113718640 A CN 113718640A
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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
- E01D19/00—Structural or constructional details of bridges
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- E01D19/048—Bearings being adjustable once installed; Bearings used in incremental launching
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Abstract
The invention provides a cushion block device capable of adjusting displacement and an application method thereof, wherein the cushion block device comprises an adjustable displacement cushion block, a wedge block, a chute basin, a limiting block, a vertical limiting rod and a transverse tensioner; the wedge blocks are connected with the sliding groove basin in a sliding mode, and the two inclined surfaces of the trapezoidal lugs in the adjustable displacement cushion blocks are consistent with the inclined surfaces of the two groups of wedge blocks in inclination respectively; the limiting block is arranged between the adjustable displacement cushion block and the chute basin, a plurality of through holes are formed in the adjustable displacement cushion block, the vertical limiting rod penetrates through the adjustable displacement cushion block, the limiting block and the chute basin to further limit the horizontal movement of the adjustable displacement cushion block, a through groove is formed in the center of the limiting block, and the transverse tensioner penetrates through the through groove to be connected with the wedge block; when the upper structure has the adjustment requirement, the lifting of the adjustable displacement cushion block is realized by controlling the position of the wedge block in the chute basin, so that the posture adjustment of the upper structure is realized, and the internal force distribution of the bridge is adjusted. By adopting the device, the elevation of the support can be adjusted in the whole life cycle of the bridge, a large amount of construction investment is saved, and time and labor are saved.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a cushion block device capable of adjusting displacement and an application method thereof.
Background
With the rapid development of modern traffic in China, a great number of long-span continuous beam bridges appear. Due to factors such as geological conditions, basic conditions and adjacent construction, the problem of long-term or short-term uneven settlement of the bridge bearing is increasingly prominent. The continuous beam bridge is of a statically indeterminate structure and sensitive to uneven settlement, and the uneven settlement can cause redistribution of internal force of the bridge, so that the full bridge is in an unfavorable stress state.
The bridge support is an important part for connecting an upper structure and a lower structure, and the problem of potential safety hazard caused by differential settlement of the support is the problem which is urgently needed to be solved at present. At present, the common means for solving the problem is to lift up the bridge and replace the support. During operation, the posture of the long-span continuous beam bridge is adjusted and constructed, a large temporary facility is generally required to be erected to provide a sufficient working surface, and the beam body is jacked to replace the support, so that time and labor are wasted.
Generally, the height of the support base stone on the bridge pier is fixed, and the limitation on the height of the adjusting beam body is large.
The cable-stayed bridge forms different structural systems according to different combinations of beams, cables, towers and piers. The tower pier consolidation and the tower beam separation form a floating system, and the tower pier consolidation, the tower beam separation and the lower part of the main beam at the tower pier are provided with a support to form a semi-floating system. The two systems have advantages and disadvantages respectively, and the tower column of the floating system has no negative bending moment peak value; the secondary internal force caused by temperature and concrete shrinkage and creep is small; the full-bridge girder is stressed uniformly and has good anti-seismic performance. The semi-floating system has the advantages that the support at the position of the tower pier limits the longitudinal displacement of the main beam to be favorable, and the construction is convenient compared with a floating system. The semi-floating system is superior to the floating system in economy under certain conditions if supporting adjustable displacement.
When a semi-floating system is adopted for a large-span bridge such as a cable-stayed bridge or a suspension bridge, higher requirements are placed on the support rigidity and the support reaction force control of the vertical support at the main tower.
The large-span cable-stayed bridge and the suspension bridge are provided with transverse supports at the beam ends and the joints of the main beams and the towers so as to bear transverse horizontal force (wind resistance). At present, a plate type rubber support is generally adopted for transverse support, and the support is essentially subjected to passive stress. The large-span cable-stayed bridge, the suspension bridge and the transverse wind-resistant limiting support arranged at the bridge tower are very difficult to install, debug, maintain and replace.
Based on the above, the invention provides the cushion block device capable of adjusting the displacement and the application method thereof, the height of the support can be adjusted, and further the internal force distribution of the bridge is adjusted, so that the bridge is in a favorable stress state. By adopting the device, the elevation of the support can be conveniently adjusted in the whole life cycle of the bridge, and meanwhile, a large amount of construction investment is saved, and time and labor are saved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a cushion block device capable of adjusting displacement and an application method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cushion block device capable of adjusting displacement comprises an adjustable displacement cushion block, a wedge block, a chute basin, a limiting block, a vertical limiting rod and a transverse tensioner; the two groups of wedge blocks are arranged, are arranged in the chute basin and are in sliding connection with the chute basin; one side of each wedge block is an inclined plane, and the inclined planes of the two groups of wedge blocks are opposite; the adjustable displacement cushion block comprises a horizontal top plate, a trapezoidal convex block is arranged below the horizontal top plate, two sides of the trapezoidal convex block are two inclined planes, the trapezoidal convex block is positioned between the two groups of wedge blocks, the two inclined planes of the trapezoidal convex block are respectively consistent with the inclined planes of the two groups of wedge blocks in inclination, and the inclined planes of the trapezoidal convex block and the inclined planes of the wedge blocks can be tightly attached; the two groups of limiting blocks are arranged and are arranged between the adjustable displacement cushion block and the chute basin, and the two groups of limiting blocks are respectively positioned on the outer sides of the two wedge blocks; the adjustable displacement cushion block is provided with a plurality of through holes, the limiting block and the chute basin are respectively provided with through holes corresponding to the through holes, and the vertical limiting rod penetrates through the adjustable displacement cushion block, the limiting block and the chute basin to limit the horizontal movement of the adjustable displacement cushion block so as to ensure that the adjustable displacement cushion block only displaces in the numerical direction; a through groove is formed in the center of the limiting block, and the transverse tensioner penetrates through the through groove to be connected with the wedge block; and applying a horizontal force to the transverse tensioner to drive the wedges to slide in the chute basin, so as to adjust the distance between the two groups of wedges, and the inclined surface of the adjustable displacement cushion block and the inclined surface of the wedge block slide relatively, so that the adjustable displacement cushion block rises or falls, thereby realizing the function of adjusting the elevation of the cushion block.
Furthermore, the device is also provided with a wedge block positioning device, the wedge block positioning device is respectively arranged on the two groups of limiting blocks, and the wedge block positioning device comprises two groups of high-strength bolts; two bolt holes are formed in the limiting block and are arranged on two sides of the through groove; the high-strength bolt is rotatably arranged in the bolt hole; when the wedge block reaches the designated position, the high-strength bolt is screwed to compress the wedge block, so that the positioning effect is achieved.
Furthermore, the device is also provided with baffle plates, the baffle plates are arranged on two sides of the adjustable displacement cushion block, the upper end of each baffle plate is detachably connected with the upper surface of the adjustable displacement cushion block, and the lower end of each baffle plate is attached to the chute basin; the baffle is a stainless steel plate.
Furthermore, horizontal roof in the adjustable displacement cushion is the solid stainless steel piece that is the rectangle, the through-hole sets up quantity and is four, sets up four extreme angle departments at horizontal roof respectively.
Further, the chute basin is a rectangular basin-shaped component, and flanges are arranged on the periphery of the chute basin; the bottom of the wedge block is provided with a notch matched with the flange, and the wedge block is embedded into the chute basin through the notch and the flange and can slide relative to the chute basin.
Furthermore, a wedge block upper panel is arranged on the surface of the inclined surface of the wedge block, and a wedge block lower panel is arranged on the lower surface of the wedge block, which is in contact with the chute basin; the wedge block upper panel and the wedge block lower panel are made of engineering plastic alloy MGB plates and have the advantages of being small in friction coefficient, large in bearing capacity, strong in ageing resistance, self-lubricating, free of maintenance and the like.
Furthermore, the vertical limiting rod is a rough bolt, and the transverse tensioner is a cold-cast pier head anchor cable system.
Furthermore, a through hole is formed in the center of the wedge block and can be used for a transverse tensioning device to pass through, and the wedge block is pushed by the tensioning transverse tensioning device.
Furthermore, a top surface support is arranged on the upper surface of the adjustable displacement cushion block.
Further, the application method of the above cushion block device capable of adjusting displacement is as follows: welding the chute basin on the reinforcing steel bars of the bridge pier to form a whole with the bridge pier framework, and ensuring the accurate elevation installation of the bottom of the chute basin during construction; after sundries in the chute basin are cleaned, the wedge block is hoisted into the chute basin, the wedge block is jacked, and whether the wedge block can move smoothly in the chute basin or not is verified; after the test is completed, the adjustable displacement cushion block, the limiting block and the vertical limiting rod are installed, the wedge block is adjusted to the designed position, so that the adjustable displacement cushion block reaches the designed elevation, and finally the wedge block is tightly jacked through the high-strength bolt to carry out in-place inspection on the component.
The invention has the beneficial effects that:
(1) compared with the conventional cushion block and the cushion stone, the adjustable bridge has the difference that the adjustable displacement cushion block, the wedge block, the chute basin, the limiting block and other adjustable block parts are arranged, when the upper structure has a posture and is settled and has an adjustment requirement, the lifting of the adjustable displacement cushion block is realized by controlling the position of the wedge block in the chute basin, so that the posture adjustment of the upper structure is realized, the internal force distribution of the bridge is adjusted, and the bridge is in a favorable stress state. The device can conveniently adjust the elevation of the support in the whole life cycle of the bridge, and simultaneously saves a large amount of construction investment, time and labor;
(2) the vertical limiting rod and the wedge block positioner are arranged to realize connection among blocks and positioning of the wedge block, so that relative dislocation among vertically moving blocks is prevented, and the installation accuracy is improved;
(3) in order to reduce the frictional resistance between the wedge block and the adjustable displacement cushion block and between the wedge block and the sliding groove basin when the wedge block slides and have the durability of a sliding surface, the plastic alloy MGB plate is used as a sliding surface material, and the wedge block has the characteristics of small friction coefficient, high bearing capacity, strong ageing resistance, self lubrication, maintenance-free property and the like.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a cross-sectional view of the present invention taken along line 1-1 and line 2-2;
FIG. 6 is a schematic view of the wedge construction of the present invention;
FIG. 7 is a schematic structural view of a limiting block and a wedge positioner and a through groove of an accessory of the limiting block;
FIG. 8 is a schematic view of the sequence of installation of the components of the present invention;
FIG. 9 is a schematic view of the force applied to the device of the present invention in place;
FIG. 10 is a schematic diagram of the force applied to the device during jacking;
the labels in the figures are:
1. an adjustable displacement cushion block; 2. a wedge block; 2-1, a wedge block upper panel; 2-2, a wedge lower panel; 3. a chute basin; 4. a limiting block; 4-1, a vertical limiting rod; 4-2, a transverse tensioner; 4-3, through grooves; 4-4, high-strength bolts; 5. a baffle plate; 6. a top surface support; 7. and a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-8, the invention provides a displacement-adjustable cushion block device, which comprises an adjustable displacement cushion block 1, a wedge block 2, a chute basin 3, a limiting block 4, a vertical limiting rod 4-1 and a transverse tensioner 4-2, wherein a top surface support 6 is arranged on the upper surface of the adjustable displacement cushion block 1; the two groups of wedge blocks 2 are arranged, are arranged in the chute basin 3 and are in sliding connection with the chute basin 3; one side of each wedge block 2 is an inclined surface, and the inclined surfaces of the two groups of wedge blocks 2 are opposite; the adjustable displacement cushion block 1 comprises a horizontal top plate, a trapezoidal convex block is arranged below the horizontal top plate, two sides of the trapezoidal convex block are two inclined surfaces, the trapezoidal convex block is positioned between the two groups of wedge blocks 2, the two inclined surfaces of the trapezoidal convex block are respectively consistent with the inclination of the inclined surfaces of the two groups of wedge blocks 2, and the inclined surfaces of the trapezoidal convex block and the inclined surfaces of the wedge blocks 2 can be tightly attached; two groups of limiting blocks 4 are arranged and are arranged between the adjustable displacement cushion block 1 and the chute basin 3, and the two groups of limiting blocks 4 are respectively positioned on the outer sides of the two wedge blocks 2; the adjustable displacement cushion block 1 is provided with a plurality of through holes 7, the limiting block 4 and the chute basin 3 are respectively provided with through holes corresponding to the through holes 7, the vertical limiting rod 4-1 penetrates through the adjustable displacement cushion block 1, the limiting block 4 and the chute basin 3 so as to limit the horizontal movement of the adjustable displacement cushion block 1, the adjustable displacement cushion block 1 is ensured to only generate displacement in the vertical direction, and the specific depth of the vertical limiting rod 4-1 embedded into the chute basin 3 is adjusted according to actual design; a through groove 4-3 is formed in the center of the limiting block 4, and the transverse tensioner 4-2 penetrates through the through groove 4-3 to be connected with the wedge block 2; and a horizontal force is applied to the transverse tensioner 4-2 to drive the wedge blocks 2 to slide in the sliding groove basin 3, so that the distance between the two groups of wedge blocks 2 is adjusted, the inclined surfaces of the adjustable displacement cushion blocks 1 and the inclined surfaces of the wedge blocks 2 slide relatively, and the adjustable displacement cushion blocks 1 rise or fall, thereby realizing the function of adjusting the heights of the cushion blocks.
In the invention, a wedge block positioning device and a baffle 5 are also arranged, the wedge block positioning device is respectively arranged on two groups of limiting blocks 4, and the wedge block positioning device comprises two groups of high-strength bolts 4-4; two bolt holes are formed in the limiting block 4 and are arranged on two sides of the through groove 4-3; the high-strength bolt 4-4 is rotatably arranged in the bolt hole; when the wedge block 2 reaches a designated position, the high-strength bolt 4-4 is screwed to enable the high-strength bolt 4-4 to tightly press the wedge block 2, so that the positioning effect is achieved; the baffles 5 are arranged on two sides of the adjustable displacement cushion block 1, the upper end of each baffle 5 is detachably connected with the upper surface of the adjustable displacement cushion block 1, and the lower end of each baffle 5 is attached to the chute basin 3; the baffle 5 is a stainless steel plate.
In the invention, the horizontal top plate in the adjustable displacement cushion block 1 is a rectangular solid stainless steel block, and the number of the through holes 7 is four, and the through holes are respectively arranged at the four end corners of the horizontal top plate.
In the invention, the chute basin 3 is a rectangular basin-shaped component, and flanges are arranged on the periphery of the chute basin; the bottom of the wedge block 2 is provided with a notch matched with the flange, and the wedge block 2 is embedded into the chute basin 3 through the notch and the flange and can slide relative to the chute basin 3. A wedge block upper panel 2-1 is arranged on the surface of the inclined plane of the wedge block 2, and a wedge block lower panel 2-2 is arranged on the lower surface of the wedge block 2, which is in contact with the chute basin 3; the wedge block upper panel 2-1 and the wedge block lower panel 2-2 are made of engineering plastic alloy MGB plates and have the characteristics of small friction coefficient, high bearing capacity, strong ageing resistance, self lubrication, no maintenance and the like; the center of the wedge block 2 is provided with a through hole for the transverse stretching device 4-2 to pass through, and the wedge block 2 is pushed by stretching the transverse stretching device 4-2.
In the invention, the vertical limiting rod 4-1 is a rough bolt, and the transverse tensioner 4-2 is a cold-cast pier head anchor cable system. In other embodiments of the invention, the transverse tensioners 4-2 can also adopt finish rolling twisted steel bars, high-strength bolts, steel strands or high-strength steel wires and matched tensioning equipment thereof according to the borne load, and can also open multiple holes on the wedge block 2 and be provided with multiple groups of transverse tensioners 4-2 according to the requirement of the lifting force.
By controlling the tension force of the transverse tensioner, the jacking force can be conveniently controlled, and the calculation mode is as follows:
1. when the device is in place, the load calculation method borne by the transverse tensioner comprises the following steps:
FH＝F sin(α)
H＝εFH
referring to fig. 9, wherein N is the load of the adjustable displacement cushion block 1, F is the pressure of the wedge block upper panel 2-1 acting on the inclined plane of the wedge block 2, epsilon is the axial force correction coefficient of the transverse tensioner, and H is the axial force borne by the transverse tensioner.
2. When the device is jacked up, the load calculation method borne by the transverse tensioner comprises the following steps:
Fμ1＝β1Fμ1
Fμ2＝β2F cos(α)μ2
H＝ε(F sin(α)+Fμ1 cos(α)+Fμ2)
refer to FIG. 10, wherein μ1、μ2The friction coefficients of the wedge block upper panel 2-1 and the wedge block lower panel 2-2 and the contact block piece are respectively expressed as beta1、β2Respectively, the friction correction coefficients.
When the posture of the beam body is adjusted, the vertical jacking force control and the displacement control can be simultaneously carried out during construction through the relation. And reading the value of the tensioning equipment according to the relationship of the support reaction force after the beam posture is adjusted, and deducing the value.
The application method of the cushion block device with the adjustable displacement of the device comprises the following steps: welding the chute basin 3 on the reinforcing steel bars of the bridge pier to form a whole with the bridge pier framework, and ensuring the accurate installation of the elevation at the bottom of the chute basin 3 during construction; after sundries in the chute basin 3 are cleaned, the wedge block 2 is hoisted into the chute basin 3, the wedge block 2 is jacked, and whether the wedge block can move smoothly in the chute basin 3 is verified; after the test is finished, the adjustable displacement cushion block 1, the limiting block 4 and the vertical limiting rod 4-1 are installed, the wedge block 2 is adjusted to the design position, so that the adjustable displacement cushion block 1 reaches the design elevation, and finally the wedge block 2 is tightly propped through the high-strength bolt 4-4 to carry out in-place inspection on components.
The invention can adjust the height of the support, further adjust the internal force distribution of the bridge and make the bridge in a favorable stress state. By adopting the device, the elevation of the support can be conveniently adjusted in the whole life cycle of the bridge, and meanwhile, a large amount of construction investment is saved, and time and labor are saved. The estimated long-term settlement value during bridge design is too large, so that the whole construction cost of the bridge is increased. The invention relates to a cable-stayed bridge and a suspension bridge of a semi-floating system, which can be arranged according to design requirements, and the supporting counter force and the supporting rigidity of a vertical support can be freely adjusted, so that the aim of optimizing the internal force of the semi-floating system structure is fulfilled. The invention is used for the transverse limiting support, and the distribution of the internal force of the beam body is in a favorable state by actively adjusting the thickness of the cushion block. The invention is used for the transverse limiting support, and can conveniently carry out installation, debugging, maintenance and replacement of the limiting support.
The first embodiment is as follows:
the specific installation sequence of the present invention is shown in fig. 8. When in use, firstly, the chute basin 3 is welded with pier top steel bars of the pier, then the wedge block 2 is hoisted into the chute basin 3, and the lower panel 2-2 of the wedge block is ensured to be tightly attached to the chute basin 3 without a gap; then hoisting the adjustable displacement cushion block 1 into the wedge block, installing a limiting block 4, inserting a vertical limiting rod 4-1 to the embedding depth, and transversely inserting a wedge block positioner 4-4; and simultaneously tensioning the transverse tensioning devices 4-2 on two sides of the wedge block 2, applying horizontal jacking force to the adjustable displacement cushion block 1 to reach a preset height, jacking the wedge block positioning devices 4-4, checking the positions of related components, and finally screwing bolts.
Example two:
the invention can be used together with the transverse supports of a cable-stayed bridge and a suspension bridge. Firstly, plate members and necessary triangular supports are pre-embedded in the cable tower. The steps of the embodiment are repeated, the transverse support and the device are assembled in the back field, and all the bolts are locked. Secondly, the assembled device is hoisted on the transverse support, and the chute basin 3 is firmly connected with the embedded plate in the cable tower and the support. After the girder is erected, the bolts of the vertical limiting rods 4-1 are loosened, the transverse stretching devices 4-2 are stretched until the transverse supports are in close contact with the girder, the installation of relevant connecting pieces of the supports is completed, and finally all limiting devices are locked. When the transverse stress of the main beam needs to be adjusted, the position of the transverse support can be adjusted by stretching the transverse stretching device 4-2, and transverse force is applied to the beam body, so that the main beam is in a favorable stress state.
Example three:
based on the engineering background of example two. When the transverse support needs to be replaced, the distance between the main beam and the cable tower is flexibly adjusted through the device provided by the invention on the two sides of the main beam, the support needing to be replaced is unloaded, and the replacement of the transverse support is finally completed.
Example four:
the invention is arranged on a cable-stayed bridge or a suspension bridge of a semi-floating system, and the position of a main beam support at a tower pier is repeated in the first embodiment. When a bridge is formed, the height of the adjustable displacement cushion block 1 is adjusted, so that the full-bridge structure system is controlled to be between the floating system and the semi-floating system, and the stress state of the main beam is improved. For example, when the peak value of the hogging moment of the main beam at the tower pier is increased to cause the main beam to be stressed unfavorably, the elevation of the adjustable displacement cushion block 1 can be reduced, so that the structure is biased to a floating system state.
It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the essential changes.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (9)
1. A cushion block device capable of adjusting displacement is characterized in that,
comprises an adjustable displacement cushion block (1), a wedge block (2), a chute basin (3), a limiting block (4), a vertical limiting rod (4-1) and a transverse tensioner (4-2);
the two groups of wedges (2) are arranged, are arranged in the chute basin (3) and are connected with the chute basin (3) in a sliding way; one side of each wedge block (2) is an inclined surface, and the inclined surfaces of the two groups of wedge blocks (2) are opposite;
the adjustable displacement cushion block (1) comprises a horizontal top plate, a trapezoidal convex block is arranged below the horizontal top plate, two sides of the trapezoidal convex block are two inclined surfaces, the trapezoidal convex block is positioned between the two groups of wedge blocks (2), the two inclined surfaces of the trapezoidal convex block are respectively consistent with the inclination of the inclined surfaces of the two groups of wedge blocks (2), and the inclined surfaces of the trapezoidal convex block and the inclined surfaces of the wedge blocks (2) can be tightly attached;
two groups of limiting blocks (4) are arranged and are arranged between the adjustable displacement cushion block (1) and the chute basin (3), and the two groups of limiting blocks (4) are respectively positioned at the outer sides of the two wedge blocks (2);
the adjustable displacement cushion block (1) is provided with a plurality of through holes (7), the limiting block (4) and the sliding groove basin (3) are respectively provided with a through hole corresponding to the through hole (7), and the vertical limiting rod (4-1) penetrates through the adjustable displacement cushion block (1), the limiting block (4) and the sliding groove basin (3);
a through groove (4-3) is formed in the center of the limiting block (4), and the transverse tensioner (4-2) penetrates through the through groove (4-3) to be connected with the wedge block (2);
and a horizontal force is applied to the transverse tensioner (4-2) to drive the wedge blocks (2) to slide in the sliding groove basin (3), so that the distance between the two groups of wedge blocks (2) is adjusted, the inclined surfaces of the adjustable displacement cushion blocks (1) and the inclined surfaces of the wedge blocks (2) slide relatively, and the adjustable displacement cushion blocks (1) rise or fall, so that the height of the cushion blocks is adjusted.
2. The adjustable displacement spacer block apparatus of claim 1,
the wedge positioning device is arranged on the two groups of limiting blocks (4) and comprises two groups of high-strength bolts (4-4);
two bolt holes are formed in the limiting block (4), and the two bolt holes are formed in two sides of the through groove (4-3); the high-strength bolt (4-4) is rotatably arranged in the bolt hole;
when the wedge block (2) reaches the designated position, the high-strength bolt (4-4) is screwed to enable the high-strength bolt (4-4) to compress the wedge block (2), so that the positioning effect is achieved.
3. The adjustable displacement spacer block apparatus of claim 1,
the adjustable displacement basin is characterized by also comprising baffle plates (5), wherein the baffle plates (5) are arranged on two sides of the adjustable displacement cushion block (1), the upper end of each baffle plate (5) is detachably connected with the upper surface of the adjustable displacement cushion block (1), and the lower end of each baffle plate is attached to the corresponding sliding groove basin (3); the baffle (5) is a stainless steel plate.
4. The adjustable displacement spacer block apparatus of claim 1,
the horizontal top plate in the adjustable displacement cushion block (1) is a rectangular solid stainless steel block, and the number of the through holes (7) is four and the through holes are respectively arranged at four end corners of the horizontal top plate.
5. The adjustable displacement spacer block apparatus of claim 1,
the chute basin (3) is a rectangular basin-shaped component, and flanges are arranged on the periphery of the chute basin;
the bottom of the wedge block (2) is provided with a notch matched with the flange, and the wedge block (2) is embedded into the sliding groove basin (3) through the notch and the flange and can slide relative to the sliding groove basin (3).
6. The adjustable displacement spacer block apparatus of claim 1,
a wedge block upper panel (2-1) is arranged on the inclined surface of the wedge block (2), and a wedge block lower panel (2-2) is arranged on the lower surface, which is in contact with the sliding groove basin (3), of the wedge block (2); the wedge block upper panel (2-1) and the wedge block lower panel (2-2) are made of engineering plastic alloy MGB plates.
7. The adjustable displacement spacer block apparatus of claim 1,
the vertical limiting rod (4-1) is a rough bolt, and the transverse tensioner (4-2) is a cold-cast pier head anchor cable system.
8. The adjustable displacement spacer block apparatus of claim 1,
the center of the wedge block (2) is provided with a through hole for a transverse stretching device (4-2) to pass through, and the wedge block (2) is pushed by stretching the transverse stretching device (4-2).
9. The adjustable displacement spacer block device according to any one of claims 1 to 8, wherein the application method is as follows:
welding the chute basin (3) on the reinforcing steel bars of the bridge pier to form a whole with the bridge pier framework, and ensuring the accurate installation of the elevation at the bottom of the chute basin (3) during construction; after sundries in the chute basin (3) are cleaned, the wedge block (2) is hoisted into the chute basin (3), the wedge block (2) is jacked, and whether the wedge block can move smoothly in the chute basin (3) is verified; after the test is finished, the adjustable displacement cushion block (1), the limiting block (4) and the vertical limiting rod (4-1) are installed, the wedge block (2) is adjusted to the design position, so that the adjustable displacement cushion block (1) reaches the design elevation, and finally the wedge block (2) is tightly jacked through the high-strength bolt (4-4) to carry out in-place inspection on the component.
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| CN202111015720.1A CN113718640A (en) | 2021-08-31 | 2021-08-31 | Displacement-adjustable cushion block device and application method thereof |
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| CN202111015720.1A CN113718640A (en) | 2021-08-31 | 2021-08-31 | Displacement-adjustable cushion block device and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113155727A (en) * | 2021-01-21 | 2021-07-23 | 成都济通路桥科技有限公司 | Method for calibrating friction coefficient of supporting device |
| CN115059088A (en) * | 2022-06-14 | 2022-09-16 | 南京工业大学 | Foundation pit steel supporting device with adjustable distance and measurable force |
| CN115228589A (en) * | 2022-08-10 | 2022-10-25 | 三一重型装备有限公司 | Intelligent stepless adjustment crusher |
| CN115231278A (en) * | 2022-09-22 | 2022-10-25 | 中南大学 | Fastener conveying mechanism and support height adjusting system |
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| CN115228589B (en) * | 2022-08-10 | 2024-04-26 | 三一重型装备有限公司 | Intelligent stepless adjustment crusher |
| CN115231278A (en) * | 2022-09-22 | 2022-10-25 | 中南大学 | Fastener conveying mechanism and support height adjusting system |
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