CN111749126A - Unidirectional sliding swing type support - Google Patents
Unidirectional sliding swing type support Download PDFInfo
- Publication number
- CN111749126A CN111749126A CN202010659345.3A CN202010659345A CN111749126A CN 111749126 A CN111749126 A CN 111749126A CN 202010659345 A CN202010659345 A CN 202010659345A CN 111749126 A CN111749126 A CN 111749126A
- Authority
- CN
- China
- Prior art keywords
- support
- damper
- support plate
- bridge
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000670 limiting effect Effects 0.000 claims description 34
- 230000009471 action Effects 0.000 abstract description 9
- 238000010008 shearing Methods 0.000 abstract description 9
- 230000035939 shock Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 12
- 238000004873 anchoring Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of shock isolation and absorption of engineering structures, and discloses a one-way sliding swing type support, wherein the support is used in a bridge and comprises an upper support plate, a lower support plate and a support member, wherein the support member is placed on the lower support plate, the upper support plate is placed on the support member, and a plurality of shear keys are respectively connected to the periphery of the support member on the bottom surface of the upper support plate and the top surface of the lower support plate; and a plurality of shear keys connected with the upper support plate are distributed on two opposite sides of the support piece along the length direction of the bridge. The unidirectional sliding swing type support provided by the invention is provided with a support piece and an upper support plate, wherein the support piece and the upper support plate can freely slide in a unidirectional way; the support piece is in swing deformation under the action of earthquake in the other direction, namely the transverse bridge is upward, and meanwhile, the support under the self weight of the upper structure has good self-resetting capability, so that the damage of the support main body is favorably reduced, the problem of shearing damage of the conventional bridge support in strong earthquake is solved, and the function restorability of the whole bridge structure after the earthquake is improved.
Description
Technical Field
The invention relates to the field of shock isolation and absorption of engineering structures, in particular to a one-way sliding swing type support.
Background
Earthquake is a common natural disaster, and once the bridge is damaged by earthquake, huge casualties and economic losses can be caused by taking the bridge as life line engineering, and the post-earthquake repair is extremely difficult. Therefore, the improvement of the seismic performance of the bridge structure, particularly the restorability after the earthquake, has great significance.
In bridge construction, it is often necessary to install a support between the upper and lower structures to resist the effects of external loads, temperature changes, earthquakes, etc. The traditional support such as a plate type rubber support adapts to structural deformation under the action of an earthquake through shearing deformation among rubber steel plate laminations, but the support has limited shearing deformation capability and is difficult to provide effective energy consumption; moreover, the shear deformation is uncontrollable, and particularly under the action of a large horizontal earthquake, the shear deformation is likely to be excessive, so that the support is subjected to shear failure, and serious results are caused.
The existing shock insulation support generates larger plastic deformation after the earthquake, and the automatic reset of the upper structure after the earthquake and the quick recovery function of the whole engineering structure are difficult to realize. Taking a bridge as an example, the existing bridge sliding support enables a bridge lower part structure to be stressed greatly during an earthquake, the bridge lower part structure is seriously damaged during the earthquake, large plastic deformation can be generated after the earthquake, self-resetting or function restorability of the bridge structure after the earthquake is difficult to realize, and the whole bridge structure is also difficult to repair quickly.
Disclosure of Invention
The embodiment of the invention provides a unidirectional sliding swing type support which is used for solving or partially solving the problem that the existing support has overlarge shearing deformation or large residual displacement in an earthquake and improving the quick recovery performance of an engineering structure after the earthquake.
The embodiment of the invention provides a one-way sliding swing type support which is used in a bridge and comprises an upper support plate, a lower support plate and a support piece, wherein the support piece is placed on the lower support plate; the lower extreme of the shear force key that the upper bracket board is connected with distance between the support piece lateral wall be greater than the upper end with distance between the support piece lateral wall, the upper end of the shear force key that the lower bolster board is connected with distance between the support piece lateral wall be greater than the lower extreme with distance between the support piece lateral wall, just it is a plurality of that the upper bracket board is connected the shear force key distributes support piece is in along bridge length direction's relative both sides.
On the basis of the scheme, the side surface of the shear key, which faces the supporting piece, is provided with an inclined surface; the top of shear force key that the upper bracket board is connected with support piece meets, the connection of undersetting board the bottom of shear force key with support piece meets.
On the basis of the scheme, a sliding friction plate is arranged between the supporting piece and the upper support plate.
On the basis of the scheme, the bridge support further comprises a plurality of dampers arranged on the periphery of the support, one ends of the dampers are detachably connected with the upper support plate in a sliding mode along the length direction of the bridge, and the other ends of the dampers are detachably and fixedly connected with the lower support plate.
On the basis of the scheme, a plurality of dampers are symmetrically distributed around the support.
On the basis of the scheme, the bottom surface of the upper support plate is connected with a limiting block at a position corresponding to the damper, a groove is formed in the limiting block along the length direction of the bridge, and the top of the damper is inserted into the groove.
On the basis of the scheme, at least one damper distributed along the same straight line in the length direction of the bridge is inserted into the groove of the same limiting block on any side of the supporting piece.
On the basis of the scheme, the width of the groove is larger than that of the top of the damper, and a gap is formed between the top of the damper and the bottom of the groove.
On the basis of the scheme, the top of the damper is provided with an enlarged head, and the enlarged head is inserted into the groove.
According to the unidirectional sliding swing type support provided by the embodiment of the invention, the supporting piece and the upper support plate can be unidirectionally and freely slid so as to meet free deformation caused by temperature stress and the like; the support piece is in swing deformation under the action of earthquake in the other direction, namely the transverse bridge is upward, the self-resetting capability of the support piece is good under the self-weight of the upper structure, the damage to the support body is favorably reduced, the problem that the shearing deformation or the residual displacement of the conventional support is too large is solved, and the anti-seismic performance of the whole engineering structure is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a unidirectional sliding rocking support according to an embodiment of the present invention;
FIG. 2 is a schematic view of the one-way sliding rocking type support according to the embodiment of the present invention in a rocking state;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along plane B-B of FIG. 1 according to an embodiment of the present invention;
FIG. 5 is a schematic side view of a damper according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a damper according to an embodiment of the present invention;
FIG. 7 is a schematic top view of a long stopper according to an embodiment of the present disclosure;
FIG. 8 is a schematic side view of a long stopper according to an embodiment of the present disclosure;
FIG. 9 is a schematic view of an application of the unidirectional sliding rocking type bearing on a bridge according to an embodiment of the present invention;
fig. 10 is a partial connection diagram of the unidirectional sliding swing type support on a bridge in the embodiment of the invention.
Description of reference numerals:
wherein, 1, an upper support plate; 2. a support member; 3. a damper; 3-1, an enlarged head; 3-2, energy consumption section; 3-3, anchoring the connecting plate; 4. a lower support plate; 5. a shear key; 6. reserving holes; 7. a damper anchor bolt; 8. a limiting block; 8-1, a long limiting block; 8-2, a short limiting block; 9. reserving an internal thread hole; 10. a sliding friction plate; 11. reserving a screw hole; 12. prefabricating a T beam; 13. pre-burying a threaded pipe; 14. a capping beam; 15. pier studs; 16. a support anchor bolt; 17. the one-way sliding swing type support.
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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a unidirectional sliding rocking type support, which may be used for a bridge support. The one-way sliding swing type support comprises an upper support plate 1 and a lower support plate 4. The one-way sliding swing type support further comprises a support member 2, wherein the support member 2 is placed on the lower support plate 4, and the upper support plate 1 is placed on the support member 2. The support 2 and the lower and upper bearing plates 4, 1 have no connecting means. The support 2 is disconnected from the upper and lower seat plates 1, 4.
A plurality of shear keys 5 are respectively connected to the periphery of the support member 2 on the bottom surface of the upper support plate 1 and the top surface of the lower support plate 4. The distance between the lower end of the shear key 5 connected with the upper support plate 1 and the side wall of the support 2 is greater than the distance between the upper end of the shear key 5 connected with the lower support plate 4 and the side wall of the support 2, and the distance between the upper end of the shear key 5 connected with the lower support plate 4 and the side wall of the support 2 is greater than the distance between the lower end of the shear key 5 and the side wall of the support 2. And a plurality of shear keys 5 connected with the upper support plate 1 are distributed on two opposite sides of the support member 2 along the length direction of the bridge.
The cross section of the support 2 can be a circular cross section or a rectangular cross section; may be a steel block, a steel pipe concrete block or other rigid material. The shear key 5 on the upper support plate 1 can be connected with the upper support plate 1 in a welding way; the shear key 5 on the lower support plate 4 can be connected with the lower support plate 4 in a welding way. The shear keys 5 play a limiting role on the supporting piece 2 at the top end periphery and the bottom end periphery of the supporting piece 2, and can prevent the supporting piece 2, the lower support plate 4 and the upper support plate 1 from sliding relatively.
The distance between one end of the shear key 5 far away from the support plate and the support 2 is larger. Referring to fig. 2, so that the shear key 5 acts as a limit to the support member 2 to prevent the support member 2 from sliding horizontally, the support member 2 may swing between the shear keys 5. This arrangement can avoid collision with the support 2. The arranged shear keys 5 are used for carrying out horizontal displacement limitation on the upper surface and the lower surface of the support piece 2, so that the support piece 2 is prevented from sliding and twisting, and the limitation on normal swinging of the support piece 2 can be ensured.
In the embodiment, the support in the engineering structure, particularly the bridge support, not only transmits the structural dead weight of the upper structure and the vertical force and the horizontal force caused by variable load to the bridge abutment, but also ensures that the structure can deform freely under the action of factors such as automobile load, temperature change or contraction and creep of concrete; therefore, the shear keys 5 connected with the upper support plate 1 are distributed on two opposite sides of the support member 2 along the length direction of the bridge (along the bridge direction), so that the transverse bridge of the support is subjected to swing deformation under the action of earthquake, the earthquake energy is dissipated, and the support is guaranteed to swing along the bridge direction and can slide in a single direction.
Specifically, the periphery of the supporting member 2 can be divided into four directions, wherein two opposite directions are along the length direction of the bridge and are along the bridge direction; the other two opposite directions are along the width direction of the bridge and are transverse to the bridge. Referring to fig. 4, the shear keys 5 connected to the upper support plate 1 in this embodiment are disposed on two opposite sides of the periphery of the support member 2 along the bridge direction, and can limit the horizontal sliding of the top of the support member 2 along the bridge direction. And because the top of the support 2 has no resistance of the shear key 5 in the bridge-following direction, horizontal sliding along the bridge-following direction can be generated between the top of the support 2 and the upper support plate 1.
The unidirectional sliding swing type support provided by the embodiment is provided with the supporting piece 2 and the upper support plate 1 which can freely slide in a unidirectional manner so as to meet the free deformation caused by temperature stress and the like; the support 2 has good self-resetting capability under the self-weight of the upper structure, and is beneficial to reducing the damage of the support main body, thereby overcoming the problem of overlarge shearing deformation or large residual displacement of the existing support and improving the anti-seismic performance of the whole engineering structure.
Further, the shear key 5 is fixedly arranged at the upper and lower corners and/or the periphery of the support member 2. Specifically, referring to fig. 3, a shear key 5 to which the lower shoe plate 4 is connected may be provided at a corner of the support member 2. The shear key 5 can play a good role in limiting the position of the supporting member 2 at the corner of the supporting member 2. The corner of each side of the lower end of the support member 2 can be provided with a shear key 5, so that the support member 2 can be limited on each side, and the support member 2 cannot slide in any direction. The shear key 5 can also be arranged at the non-corner part, namely the side edge, at the periphery of the lower end of the support part 2, and the better limiting effect on the support part 2 can also be realized. The specific arrangement positions and the number of the shear keys 5 at the periphery of the lower end of the support member 2, namely the shear keys 5 connected with the lower support plate 4, can be flexibly arranged according to actual needs, and are not limited specifically.
Referring to fig. 4, the shear keys 5 connected to the upper support plate 1 may be symmetrically distributed on both sides of the support member 2 along the bridge direction (length direction).
Further, the side of the shear key 5 facing the support 2 is beveled. The top end of the shear key 5 connected with the upper support plate 1 is connected with the support member 2, and the bottom end of the shear key 5 connected with the lower support plate 4 is connected with the support member 2. I.e. the side of the shear key 5 facing the support 2 is inclined with respect to the surface of the support 2. And the shear key 5 is contacted with the support 2 at the periphery of the support 2, so that the horizontal sliding of the support 2 can be more effectively prevented.
Further, the side of the shear key 5 facing the supporting member 2 may also be a curved surface, such as a convex surface or a concave surface, so as to achieve the purpose of horizontally limiting the supporting member 2 without affecting the swinging movement of the supporting member 2, and is not limited specifically.
On the basis of the above embodiment, further, referring to fig. 1 and 2, the shear key 5 has a columnar structure with a triangular cross section. The section of the shear key 5 is triangular; avoiding collision with the support 2. One of the acute angle points bears against the end of the support 2; the horizontal positions of the upper surface and the lower surface of the support member 2 are fixed by the arranged shear keys 5, so that the support member 2 is prevented from sliding, and meanwhile, the normal swinging of the support member 2 is not limited. The shear key 5 arranged at the same time can limit the support 2 from twisting.
A plurality of shear keys 5 are arranged at the corners or the periphery of the lower surface of the supporting piece 2, so that the bottom of the supporting piece 2 is fixed and cannot slide or twist; the shear keys 5 are not arranged on the upper surface of the support member 2 on two sides in the transverse bridge direction, and the shear keys 5 are respectively arranged on each side on two sides in the bridge direction, so that the support member 2 can freely slide along one direction, cannot slide in the other direction and only can swing.
Specifically, the cross-sectional shape of the shear key 5 may be a right triangle, wherein one of the legs is adapted to be connected to the upper seat plate 1 or the lower seat plate 4, and the hypotenuse faces the support member 2. The cross-sectional shape of the shear key 5 may also be an obtuse triangle or an acute triangle, so that the side facing the support 2 is an inclined surface, and the angle formed by the inclined surface and the side of the support 2 is determined according to the swing angle of the support 2 required by the design, and is not limited specifically. Further, the cross-sectional shape of the shear key 5 may also be a parallelogram, a trapezoid, or any other shape, so as to achieve the purpose of horizontally limiting the support member 2 without affecting the swinging movement of the support member 2, and is not particularly limited.
In addition to the above embodiments, a sliding friction plate 10 is further provided between the support member 2 and the upper seat plate 1. The sliding friction plate 10 may be fixed on the upper surface of the supporter 2; the upper support plate 1 is placed on the sliding friction plate 10, and no fixed connection measure is provided between the upper support plate and the sliding friction plate; for reducing the frictional energy between the support member 2 and the upper seat plate 1. The sliding friction plate 10 may be fixed to the bottom surface of the upper seat plate 1, and is not particularly limited. The sliding friction plate 10 is made of a low friction material such as polytetrafluoroethylene.
On the basis of the above embodiment, further, the unidirectional sliding rocking type support further includes a plurality of dampers 3 disposed on the periphery of the support member 2. One end of the damper 3 is detachably connected with the upper support plate 1 in a sliding manner along the length direction of the bridge. The other end of the damper 3 is detachably and fixedly connected with the lower support plate 4. The damper 3 is used to dissipate energy. The damper 3 can be detachably connected between the upper support plate 1 and the lower support plate 4, so that the damper 3 can be conveniently detached and replaced, and the restorability of the support is improved.
The unidirectional sliding swing type support can freely slide in a single direction, damage of the support after earthquake can be concentrated on the replaceable damper 3 through reasonable design of the support, the damaged damper 3 is easy to replace, and the support can be applied to realize bearing and energy consumption function separation, so that damage of a bridge main body structure is reduced, and earthquake-resistant toughness and recoverability of the bridge structure are improved.
On the basis of the above-described embodiment, further, a plurality of dampers 3 are symmetrically distributed about the support 2. Referring to fig. 3, a plurality of dampers 3 may be provided on each side of the support 2. The damper 3 swings together with the support member 2 when the support member 2 swings, thereby generating bending deformation and dissipating seismic energy.
On the basis of the above embodiment, further, referring to fig. 4, the bottom surface of the upper support plate 1 is connected with a limiting block 8 at a position corresponding to the damper 3, a groove is formed in the limiting block 8 along the length direction of the bridge, and the top of the damper 3 is inserted into the groove. The length of stopper 8 upper groove along bridge length direction should satisfy the top that attenuator 3 can move along bridge length direction in the recess to realize smoothly between support piece 2 and the upper bracket board 1 along the sliding of bridge direction.
On the basis of the above embodiment, further, on either side of the supporting member 2, at least one damper 3 distributed along the same straight line in the bridge length direction is inserted into the groove of the same stopper 8.
In particular, with reference to fig. 4, a ring of dampers 3 is provided on the periphery of the support 2 in the present embodiment, i.e. a row of dampers 3 is provided on either side of the support 2. At the moment, a row of dampers 3 are respectively arranged on two sides of the supporting piece 2 along the length direction of the bridge; on each side, a long limiting block 8-1, namely a longer limiting block 8 along the bridge direction, can be connected to the upper support plate 1, and a longer groove is formed in the long limiting block 8-1, so that a row of dampers 3 are all inserted into the groove in the long limiting block 8-1, as shown in fig. 7 and 8. And on any side of the support piece 2 along the length direction of the bridge, the length of the long limiting block 8-1 and the groove along the length direction of the bridge is greater than the distance between the dampers 3 at two ends along the length direction of the bridge. So that each damper 3 has a bridge-wise sliding space. In fig. 4, short limiting blocks 8-2 are arranged on two sides of the supporting piece 2 in the width direction of the bridge, and each damper 3 is correspondingly provided with one short limiting block 8-2.
Furthermore, when any side of the support member 2 along the length direction of the bridge is provided with a plurality of rows of dampers 3, a plurality of limit blocks 8 can be correspondingly arranged. When any side of the support piece 2 along the width direction of the bridge is provided with a plurality of rows of dampers 3, the dampers 3 which are positioned on the same straight line in the length direction of the bridge can be correspondingly provided with a limiting block 8.
On the basis of the above embodiment, further, referring to fig. 1, the width of the groove is larger than the top width of the damper 3; there is a gap between the top of the damper 3 and the bottom of the groove. The top of the damper 3 is inserted into a groove of the stopper 8, and the groove is arranged such that a gap is provided between the inserted portion of the damper 3 and a groove wall of the groove. A gap is formed between the inserting part of the damper 3 and the groove bottom of the groove, so that the damper 3 is not subjected to tension and pressure when the upper support plate 1 is displaced up and down to a certain degree; there may not be the clearance between the bottom of the groove and the attenuator 3 and be the contact but not the atress state, and when upper support plate 1 took place the up-and-down displacement of certain degree this moment, attenuator 3 can not receive pressure and pulling force, does not take place to draw likewise and presses the deformation. A certain distance is reserved between the top of the damper 3 and the notch of the groove, namely the top of the damper 3 is inserted into the groove for a certain distance, so that the top of the damper is prevented from being separated from the groove when the swing is overlarge, and the gap can be determined according to the swing amount of the support.
On the basis of the above embodiment, further, referring to fig. 5, the top of the damper 3 is provided with an enlarged head 3-1, and the enlarged head 3-1 is inserted into the groove.
The limiting block 8 is welded on the lower surface of the upper support plate 1; the limiting block 8 can be a steel cover, a strip-shaped groove is formed in the limiting block, the width of the groove is slightly larger than the size of the expansion head 3-1 of the damper 3, the length of the groove is larger than the distance between the dampers 3 at two ends of the same side, and the expansion head 3-1 of the damper 3 is guaranteed not to be subjected to lateral force in the sliding direction when sliding in one direction. The groove position of the limiting block 8 corresponds to the position of the expansion head 3-1 of the damper 3.
The upper end of the damper 3 is a free end and extends into the limiting block 8, the width of the strip-shaped groove is larger than the diameter of the enlarged head 3-1 of the damper 3, a gap is formed between the enlarged head 3-1 and the groove bottom of the groove, and therefore when the support swings in the swinging direction, the damper 3 can freely move up and down in the height direction of the damper 3, tension and pressure are avoided, and only unilateral lateral force action generated by the limiting block 8 on the enlarged head 3-1 of the damper 3 along the swinging direction is exerted. The damper 3 is bent to dissipate the seismic energy. The length of the strip-shaped groove is larger than the farthest distance between the conical dampers 3 at two ends of the same side, so that the dampers 3 are guaranteed not to be subjected to lateral force in the sliding direction.
Furthermore, two ends of the groove on each limit block 8 can be provided with limit pieces to prevent the expansion head 3-1 from sliding out.
On the basis of the above embodiment, further, the bottom of the damper 3 is connected with an anchor connecting plate 3-3, and the anchor connecting plate 3-3 is connected with the lower support plate 4.
Referring to fig. 5, specifically, the damper 3 may have a tapered shape, and the sectional size of the damper 3 gradually increases from top to bottom. The damper is under the action of bending moment, the bottom bending moment is large, the upper bending moment is small, and the energy consumption section of the damper is arranged to be small at the top and big at the bottom, so that the stress of the damper is facilitated, and the material is saved.
The damper 3 comprises an energy consumption section 3-2, an expansion head 3-1 connected to the top of the energy consumption section 3-2 and an anchoring connecting plate 3-3 connected to the bottom of the energy consumption section 3-2. The section of the middle energy consumption section 3-2 of the damper 3 is circular, and the section is gradually reduced from bottom to top; the uppermost end is provided with an enlarged head 3-1. Referring to fig. 6, the damper 3 has an anchor connecting plate 3-3 at a lower portion thereof; the lower surface of the middle energy consumption section 3-2 of the damper 3 and the anchoring connecting plate 3-3 can be welded into a whole. A reserved screw hole 11 is formed in the anchoring connecting plate 3-3; the damper anchor bolt 7 is provided with an external thread which is matched with a reserved screw hole 11 on the anchor connecting plate 3-3; the lower support plate 4 is provided with a reserved internal thread hole 9 at the position corresponding to the reserved screw hole 11 of the anchoring connection plate 3-3.
The damper anchor bolt 7 is screwed in and penetrates through the reserved screw hole 11, and is further screwed into the reserved internal thread hole 9 of the lower support plate 4 to be screwed and anchored. When the damper 3 is damaged after being shaken, the damper anchor bolt 7 can be unscrewed, the damaged damper 3 is detached, and meanwhile, the new damper 3 is replaced conveniently.
Further, the damper 3 may be a steel damper; the damper 3 can be made of steel; meets certain strength requirement and bending capability. The damper 3 may be made of other materials, and is not particularly limited. The support 2 is placed in the center of the lower seat plate 4 in hard contact with the lower seat plate 4 without any connection means.
Furthermore, in this embodiment, a bridge structure is taken as an example to illustrate the application of the above unidirectional sliding rocking type support, the bridge includes the above unidirectional sliding rocking type support, and further includes an upper beam body and a lower beam body, the upper support plate is connected to the upper beam body, and the lower support plate is connected to the lower beam body. Referring to fig. 9, the one-way sliding rocking type bearing 17 in the present embodiment is provided between the upper beam body and the lower beam body. The upper support plate 1 is fixedly connected with the upper beam body; the lower support plate 4 is connected and fixed with the lower cover beam 14 or the pier stud 15. The upper beam body may be a prefabricated T-beam 12. Referring to fig. 1, the upper support plate 1 and the lower support plate 4 are respectively provided with a reserved hole 6. The anchor bolts 16 can be passed through the preformed holes 6 in effective anchoring connection with the upper and lower beams 14 or piers 15.
Specifically, referring to fig. 10, the support anchor bolt 16 passes through the upper support plate 1 and extends into the embedded threaded pipe 13 in the upper prefabricated T-beam 12 to realize the connection and fixation of the upper support plate 1 and the upper beam body. The seat anchor bolts 16 are anchored through the pre-embedded threaded pipes 13 in the lower seat plate 4 and the lower capping beam 14. The application of the unidirectional sliding rocking type supporting seat 17 on the bridge is schematically shown in fig. 9 and 10.
On the basis of the embodiment, further, in order to solve the problems that the existing bridge support has low energy consumption capability and large shear deformation and is easy to lose efficacy or has large residual displacement in an earthquake, the quick recovery of the post-earthquake function of the engineering structure is realized. This embodiment proposes dissipating the seismic energy through the dampers 3 in the mount and converting the shear deformation mode of the existing mount into a sway dissipation mode. The unidirectional rocking of the support 2 and the bending of the damper 3 provide the support with self-resetting and energy-dissipating capabilities. While the other direction is free to slide. The bridge construction method is simple in structure, easy to achieve and capable of being widely applied to bridge engineering.
The embodiment provides a one-way sliding swing type support, mainly comprising: the device comprises an upper support plate 1, a rigid support and swinging component, namely a support 2, a damper 3, a lower support plate 4, a shear key 5, a damper anchor bolt 7, a limiting block 8 with a groove and a sliding friction plate 10; a plurality of shear keys 5 are respectively arranged at the corners or the periphery of the lower surfaces of the rigid support and the swinging component, so that the bottom of the rigid support and the bottom of the swinging component are fixed and cannot slide or twist; the shear keys 5 are not arranged on two surfaces of the upper surface of the rigid support and swing component in the direction perpendicular to the sliding direction, and the shear keys 5 are arranged on each surface of two surfaces parallel to the length direction of the bridge, so that the rigid support and swing component can freely slide along one direction, cannot slide in the other direction, and can only swing.
The lower end of the damper 3 is welded with the anchoring connecting plate 3-3 into a whole, and the anchoring connecting plate 3-3 is anchored on the lower support plate 4 by a damper anchoring bolt 7 to reserve an internal thread hole 9. The upper end of the conical damper 3 is provided with an expansion head 3-1 which extends into a limiting block 8 with a groove welded on the upper support plate 1 for a certain distance, and when the support generates unidirectional swing. The expansion head 3-1 is subjected to horizontal lateral force in the swinging direction of the steel cover with the groove, so that the conical damper 3 is subjected to bending deformation, and the seismic energy is dissipated. The conical damper 3 expansion head 3-1 can prevent the limiting block 8 with the groove from directly touching the conical damper 3 energy dissipation section 3-2 when swinging left and right, thereby ensuring that the conical damper 3 can fully exert the energy dissipation function. The swinging self-resetting support can reduce the damage of the support by swinging and concentrate the damage on the conical damper 3. The conical damper 3 can be easily replaced after damage.
The beneficial effect of this embodiment is: the unidirectional sliding swing type support can enable the support to generate swing deformation instead of shear slip deformation through the rigid support and the swing of the swing component in one direction under the action of an earthquake, and can effectively avoid overlarge shear slip and uncontrollable shear damage of the traditional rubber support; in the other direction, the upper support plate 1 can slide freely along the upper surface of the rigid support and the rocking member, and can freely deform due to temperature stress and the like.
The conical damper 3 is anchored on the lower support plate 4 through an anchoring connecting plate 3-3 and an anchoring bolt 7 of the damper 3, and the upper end of the conical damper is a free end. When the support generates unidirectional swing, the conical damper 3 is not restrained in the height direction and the sliding direction of the damper 3, only horizontal lateral force in the swing direction generated by the limiting block 8 with the groove on the expanding head 3-1 of the conical damper 3 is received, and the seismic energy is dissipated through the bending deformation of the conical damper 3. After the earthquake is damaged, the damaged conical damper 3 can be taken down, and the new conical damper 3 can be conveniently replaced.
The embodiment breaks through the traditional design thought of the bridge support, has flexible design and definite stress mechanism, reduces the damage of the support through the swinging of the support in the swinging direction, concentrates the damage on the damper 3, can be used after slightly repairing, is favorable for ensuring that a traffic life line is not interrupted and quickens the rescue time in a disaster area; meanwhile, the support avoids uncontrollable shearing deformation and shearing damage, and has better energy consumption capability and self-resetting capability. The damper 3 can be quickly replaced after being damaged, and has the characteristic of quick repair. In the sliding direction, the upper bracket plate 1 and the bridge superstructure are freely slidable in the sliding direction. The problem that the traditional one-way sliding support is low in energy consumption capacity, too large in shearing deformation and easy to lose efficacy or large in residual displacement in an earthquake can be solved, and the quick recovery of functions of an engineering structure after the earthquake is realized. The one-way sliding swing type support with the damper 3 is simple in structure, easy to realize, capable of being widely applied to engineering structures and worthy of popularization and application in practical engineering.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A unidirectional sliding swing type support is used in a bridge and comprises an upper support plate and a lower support plate and is characterized by further comprising a support member, wherein the support member is placed on the lower support plate, the upper support plate is placed on the support member, and a plurality of shear keys are respectively connected to the periphery of the support member on the bottom surface of the upper support plate and the top surface of the lower support plate;
the lower extreme of the shear force key that the upper bracket board is connected with distance between the support piece lateral wall be greater than the upper end with distance between the support piece lateral wall, the upper end of the shear force key that the lower bolster board is connected with distance between the support piece lateral wall be greater than the lower extreme with distance between the support piece lateral wall, just it is a plurality of that the upper bracket board is connected the shear force key distributes support piece is in along bridge length direction's relative both sides.
2. The unidirectional sliding rocking type support saddle of claim 1, wherein the side of the shear key facing the support member is provided with an inclined surface; the top of shear force key that the upper bracket board is connected with support piece meets, the connection of undersetting board the bottom of shear force key with support piece meets.
3. A unidirectional sliding rocking bearing as claimed in claim 1 wherein a sliding friction plate is provided between the support member and the upper bearing plate.
4. The unidirectional sliding rocking support according to any one of claims 1 to 3, further comprising a plurality of dampers disposed on the periphery of the support member, wherein one end of each damper is detachably and slidably connected to the upper support plate along the length direction of the bridge, and the other end of each damper is detachably and fixedly connected to the lower support plate.
5. A unidirectional sliding rocking mount according to claim 4 wherein a plurality of the dampers are symmetrically distributed about the support.
6. The unidirectional sliding rocking type support according to claim 4, wherein a limiting block is connected to the bottom surface of the upper support plate at a position corresponding to the damper, a groove is formed in the limiting block along the length direction of the bridge, and the top of the damper is inserted into the groove.
7. A unidirectional sliding rocking support as claimed in claim 6, wherein at least one damper, located along the same line in the direction of the length of the bridge, is inserted into the recess of the same stopper on either side of the support.
8. The unidirectional sliding rocking mount of claim 6, wherein the width of the groove is greater than the width of the top of the damper, with a gap between the top of the damper and the bottom of the groove.
9. A unidirectional sliding rocking support as claimed in claim 6, wherein the top of the damper is provided with an enlarged head which is inserted into the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659345.3A CN111749126A (en) | 2020-07-09 | 2020-07-09 | Unidirectional sliding swing type support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659345.3A CN111749126A (en) | 2020-07-09 | 2020-07-09 | Unidirectional sliding swing type support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111749126A true CN111749126A (en) | 2020-10-09 |
Family
ID=72710969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010659345.3A Pending CN111749126A (en) | 2020-07-09 | 2020-07-09 | Unidirectional sliding swing type support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111749126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232458A (en) * | 2021-11-17 | 2022-03-25 | 洛阳双瑞特种装备有限公司 | Combined movement type damping tenon structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499426A (en) * | 2014-12-03 | 2015-04-08 | 大连海事大学 | Novel pier bottom isolation bearing using swinging-rolling device and steel plate energy dissipator |
| JP2015094075A (en) * | 2013-11-08 | 2015-05-18 | Ｊｆｅシビル株式会社 | Damper device for structural earthquake strengthening |
| CN204940108U (en) * | 2015-09-25 | 2016-01-06 | 西安中交土木科技有限公司 | Subtract shock insulation girder falling metal energy dissipating support |
| CN107794839A (en) * | 2017-11-30 | 2018-03-13 | 中铁二院工程集团有限责任公司 | A kind of stopping means of vibration absorption and isolation support |
| CN108049304A (en) * | 2017-12-14 | 2018-05-18 | 防灾科技学院 | A kind of mountain area Irregular Bridges twin shaft pier mixing antidetonation system |
| CN108396643A (en) * | 2018-05-17 | 2018-08-14 | 南京工业大学 | Shear force controllable type shock insulation support |
| CN212656107U (en) * | 2020-07-09 | 2021-03-05 | 北京工业大学 | Unidirectional sliding swing type support |
-
2020
- 2020-07-09 CN CN202010659345.3A patent/CN111749126A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015094075A (en) * | 2013-11-08 | 2015-05-18 | Ｊｆｅシビル株式会社 | Damper device for structural earthquake strengthening |
| CN104499426A (en) * | 2014-12-03 | 2015-04-08 | 大连海事大学 | Novel pier bottom isolation bearing using swinging-rolling device and steel plate energy dissipator |
| CN204940108U (en) * | 2015-09-25 | 2016-01-06 | 西安中交土木科技有限公司 | Subtract shock insulation girder falling metal energy dissipating support |
| CN107794839A (en) * | 2017-11-30 | 2018-03-13 | 中铁二院工程集团有限责任公司 | A kind of stopping means of vibration absorption and isolation support |
| CN108049304A (en) * | 2017-12-14 | 2018-05-18 | 防灾科技学院 | A kind of mountain area Irregular Bridges twin shaft pier mixing antidetonation system |
| CN108396643A (en) * | 2018-05-17 | 2018-08-14 | 南京工业大学 | Shear force controllable type shock insulation support |
| CN212656107U (en) * | 2020-07-09 | 2021-03-05 | 北京工业大学 | Unidirectional sliding swing type support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232458A (en) * | 2021-11-17 | 2022-03-25 | 洛阳双瑞特种装备有限公司 | Combined movement type damping tenon structure |
| CN114232458B (en) * | 2021-11-17 | 2024-01-30 | 中船双瑞(洛阳)特种装备股份有限公司 | Combined movement type damping tenon structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111764267A (en) | Swing type self-resetting support | |
| CN108729344B (en) | A kind of two-columned pier construction waving shock insulation use in conjunction | |
| CN110485263B (en) | Self-resetting multidirectional limit energy-consumption anti-seismic stop block structure | |
| KR100831893B1 (en) | Elastic bearing for supporting a bridge, which facilitates easy maintenance and repairing | |
| CN108412083B (en) | Assembled self-resetting steel frame-steel plate shear wall structure | |
| CN106638286B (en) | A kind of tension girder falling combined isolation device and its construction method | |
| CN114775413B (en) | Existing pier anti-seismic performance improving structure and method based on inertial capacity shock insulation and swing | |
| CN212656109U (en) | Swing type self-resetting support | |
| CN212656107U (en) | Unidirectional sliding swing type support | |
| CN202519577U (en) | Bridge cable earthquake-reducing limiter | |
| CN111749126A (en) | Unidirectional sliding swing type support | |
| CN104313998B (en) | Transverse damping device suitable for large-span bridge | |
| CN215482258U (en) | Multi-damping system for segment-assembled single-column pier separated UHPC swinging bearing platform | |
| CN113605218B (en) | Swing self-reset rigid frame bridge double-limb thin-wall pier | |
| CN113944097A (en) | Friction energy consumption-self-reset beam falling prevention device | |
| CN111764268A (en) | Self-resetting support | |
| CN212656108U (en) | Self-resetting support | |
| CN109914228B (en) | Shock-absorbing device | |
| CN212641184U (en) | Swing type support | |
| CN217052996U (en) | High damping rubber-hourglass shaped steel supports combination formula power consumption structure | |
| CN114232464A (en) | High-damping rubber-hourglass-shaped steel support combined energy consumption structure and method | |
| CN211473068U (en) | Toughness energy dissipation steel column | |
| CN202466397U (en) | Bridge limiting and shock-insulating rubber sliding plate supporting seat | |
| CN111749125A (en) | Swing type support | |
| CN114892509A (en) | Rocking pier based on tumbler principle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |