CN110004818A - A kind of energy-dissipating type waves Self-resetting Antivibration block system and its construction method - Google Patents
A kind of energy-dissipating type waves Self-resetting Antivibration block system and its construction method Download PDFInfo
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- CN110004818A CN110004818A CN201910329834.XA CN201910329834A CN110004818A CN 110004818 A CN110004818 A CN 110004818A CN 201910329834 A CN201910329834 A CN 201910329834A CN 110004818 A CN110004818 A CN 110004818A
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- 238000005265 energy consumption Methods 0.000 claims abstract description 58
- 210000002435 tendon Anatomy 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 83
- 230000003014 reinforcing effect Effects 0.000 claims description 51
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- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 3
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- 230000008569 process Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
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- 238000009434 installation Methods 0.000 description 3
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- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000007747 plating Methods 0.000 description 2
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- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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Classifications
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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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- 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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Abstract
The invention discloses a kind of energy-dissipating types to wave Self-resetting Antivibration block system, the stop system includes the first block and the second block at left and right sides of bent cap, first block and the second block pass through unbonded prestressing tendon and connect with bent cap, and the lower end of first block and the second block is equipped with block support platform.The present invention correspondingly provides the construction method that a kind of above-mentioned energy-dissipating type waves Self-resetting Antivibration block system.The configuration of the present invention is simple, there is good energy consumption function, block can limit the lateral displacement of beam body in a certain range, by reasonably designing, block, which can be provided, damages the intensity and deformability to match with bridge column, it can be ensured that bridge maintains normal usage function in violent earthquake.
Description
Technical field
The invention belongs to bridge field more particularly to a kind of Antivibration block systems and its construction method.
Background technique
China is the multiple country of an earthquake, and earthquake has the characteristics that destruction is big, it is wide to be related to.In earthquake, lid
Beam transverse direction block moves restraint beam position, restrainer destruction plays an important role, but component important in this way is at present anti-
Shake design does not obtain enough attention also.Especially since lacking the phase of block in the existing Bridge Earthquake Resistance Design specification in China
Specification is closed, in a large amount of sciences of bridge building for causing China existing, block tectonic sieving is mainly with the experience of designer.
When limiting beam body lateral displacement all block is arranged in the two sides at the top of bent cap in Bridges in Our Country engineering at this stage
(relationship between block and bent cap is upper mo(u)ld bottom half arrangement), reserved vertical reinforcement pours integral formula after the completion of being poured by bent cap
Reinforced concrete block, and illustrate on the tectonic sieving of block without relevant design, such block is under geological process, pontic hair
Raw lateral displacement is excessive to collide this in the process without any damping and energy consumption measure with block, and block and beam body generation are rigid
Collision, shear brittleness destruction, bent cap and the possible well damage of block easily occur for block, or even beam body occurs and falls.According to
From the point of view of the case where shaking the damage of backstop in recent years, perforative major fracture approximation 45° angle extends obliquely, and the damage of bent cap two sides is tight
Again, it is big that difficulty is repaired again, and cost is high.The main reason for above-mentioned phenomenon occurs is that block and bent cap constitute one by vertical reinforcement
Body, only vertical shear reinforcement and horizontal lacing wire resists the shock of beam body under geological process, once reinforcing bar cannot bear these
When impact force, bent cap will be torn, and seismic energy is not dissipated effectively during this, it is difficult to realize that more levels are set
Anti- requirement.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, one kind is provided
Energy-dissipating type waves Self-resetting Antivibration block system and its construction method, which can effectively dissipate under geological process
Seismic energy, and have enough restraining abilities and runback bit function.In order to solve the above technical problems, technical side proposed by the present invention
Case are as follows:
A kind of energy-dissipating type waves Self-resetting Antivibration block system, and the stop system includes the at left and right sides of bent cap
One block and the second block, first block and the second block pass through unbonded prestressing tendon and connect with bent cap, and described
The lower end of one block and the second block is equipped with block support platform.
In the present invention, the first block and the second block are all set in the left and right sides (relationship between block and bent cap of bent cap
For left right model arrangement), rather than be arranged bent cap top surface two sides, also, in the present invention the first block and the second block upper end
It is above the lower end of beam body on bent cap, to be detached from bent cap for stopping beam body lateral displacement excessive.In the present invention, block support
Platform can be with bent cap integral preform, and with bent cap with width, length is slightly larger than block thickness, which is not only the inspection after construction and shake
Convenience in reparation personnel offer work is provided, while being used to support block.
In above-mentioned stop system, it is preferred that the unbonded prestressing tendon includes the first presstressed reinforcing steel and the second prestressing force
Muscle, first block are connect by the first presstressed reinforcing steel with bent cap, and second block passes through the second presstressed reinforcing steel and bent cap
Connection, and the first presstressed reinforcing steel and the second presstressed reinforcing steel are mutually indepedent.First presstressed reinforcing steel and the second presstressed reinforcing steel are mutually indepedent
It can guarantee the mutual independence of the first block and the movement of the second block, a certain block failure will not influence the function of another block
Can, when replacement, also all need not integrally be replaced, and the block for only needing to change damage can (or the presstressed reinforcing steel or consumption of damage side block blocks
Energy device), practical value is higher with economic value.
In above-mentioned stop system, it is preferred that one end of first presstressed reinforcing steel is fixedly arranged on the lateral surface of the first block, separately
One end is fixedly arranged on lateral surface of the bent cap far from the first block, and one end of second presstressed reinforcing steel is fixedly arranged on the outside of the second block
Face, the other end are fixedly arranged on lateral surface of the bent cap far from the second block.Above-mentioned fixed mode is unlimited, it is preferred to use anchoring.
In above-mentioned stop system, it is preferred that perforation is equipped with presstressed reinforcing steel duct, first block and the in the bent cap
The presstressed reinforcing steel duct of perforation is correspondingly provided in two blocks, the elongate holes that the presstressed reinforcing steel duct is vertically arranged are (such as
Rectangular opening), and the unbonded prestressing tendon is set to the middle and upper part of presstressed reinforcing steel duct.It is furthermore preferred that the elongate holes
Length h, bent cap length L and the safe rotational angle θ of block between relationship are as follows: L*tan θ≤h/2.Above-mentioned set-up mode can
Effectively to increase the turning power (safe rotational angle is bigger) of block, while ensuring that deformed bar is in tension shape always
State avoids generation of the deformed bar by failure by shear.
In above-mentioned stop system, it is preferred that the upper surface of the block support platform is equipped with arc groove, the first gear
The lower surface of block and the second block is equipped with the arc convex matched with the arc groove, and the radius of the arc convex
R1 is less than the radius R2 of arc groove.By way of ball as arc groove and arc convex is set and enters formula fitting connection,
Can be rotated along arc groove when block Forced rotation, in geological process arc lower protrusion in interface " one from one close " Lai Shixian
It rotates, energy release is realized in rotation process.Furthermore above-mentioned connection type improves the stability of system, avoids block in rotation
Unstability occurs in the process, system is caused to fail.For the radius R2 of arc groove, the radius R1 of protrusion should be greater than, it is feasible in this way
Property it is high, greatly simplified construction, improve construction efficiency.
In above-mentioned stop system, it is preferred that it is equipped with energy-consuming device between first block, the second block and bent cap,
The energy-consuming device is arranged in the upper end of unbonded prestressing tendon, and the energy-consuming device includes internally-arranged type energy-consuming device and/or outer
Set type energy-consuming device.The presence of energy-consuming device realizes more levels and sets up defences, is conducive to the Aseismic Design of bridge structure, uses the longevity
It orders longer.When an earthquake occurs, the energy consumption part in energy-consuming device absorbs energy first, and until consuming energy, part is pulled off, and then is
Presstressed reinforcing steel starts to bear the energy that beam body transmits block in earthquake, and the safety of entire Antivibration block system is higher.Generally
For, when constructing stop system, internally-arranged type energy-consuming device of first constructing, externally positioned type energy-consuming device is for subsequent internally-arranged type energy consumption dress
Internally-arranged type energy-consuming device is replaced after setting failure.
In above-mentioned stop system, it is preferred that the internally-arranged type energy-consuming device includes fixed (such as pre-buried) in bent cap or so two
First energy consumption reinforcing bar of side and the second energy consumption reinforcing bar, energy consumption reinforcing bar duct is offered in first block and the second block,
The first energy consumption reinforcing bar passes through the energy consumption reinforcing bar duct in the first block and is fixedly arranged on the lateral surface of the first block, and described second
Energy consumption reinforcing bar passes through the energy consumption reinforcing bar duct in the second block and is fixedly arranged on the lateral surface of the second block.Above-mentioned first energy consumption reinforcing bar
It is directly embedded at left and right sides of bent cap or reserved by the left and right sides of bent cap threaded sleeve and bent cap in advance with the second energy consumption reinforcing bar
Affixed (pre-buried in advance, later period installation).Above-mentioned internally-arranged type energy-consuming device structure is simple and effective, once but earthquake be damaged it is built-in
When type energy-consuming device, replacement is difficult after shake, in the present invention, spare screw shell can be reserved in bent cap two sides, in block
Also spare energy consumption reinforcing bar duct is reserved.It is consumed energy after reinforcing bar damage in earthquake, energy consumption reinforcing bar can be passed through spare energy consumption steel
Muscle duct is turned round into spare threaded sleeve, the installation and replacement of energy-consuming device may be implemented, and integral replacing stop system is not necessarily to.
In above-mentioned stop system, it is preferred that the externally positioned type energy-consuming device include be fixedly arranged on bent cap end leading flank and/or
The connecting support of end trailing flank is correspondingly provided with connecting support, the adjacent connection branch on first block and the second block
Seat is connected integral by energy consumption part.In the present invention, it can be used as in bent cap, the first block and the second block corresponding position bar planting
Connecting support, energy consumption part can be the Energy dissipating materials such as regular reinforcement, damper, memorial alloy.
Above-mentioned externally positioned type energy-consuming device structure is simple, easily operated, and later period replacement is also easy, because of connecting support and energy consumption part
It is placed in air, it is contemplated that rotten action of rust can use Zn-based plating layer or epoxy resin on the surface of connecting support and energy consumption part
Coating carries out the processing of anti-corrosion rust.
As a general technical idea, the present invention also provides a kind of energy-dissipating types to wave applying for Self-resetting Antivibration block system
Work method the following steps are included:
S1: the block support platform of prefabricated or Cast-in-place Bent Cap and two sides, and corresponding presstressed reinforcing steel duct is reserved, prefabricated
One block and the second block, and reserve corresponding presstressed reinforcing steel duct and energy consumption reinforcing bar duct；
S2: the first block, the second block are placed in block support platform, and the first presstressed reinforcing steel is placed in bent cap
In presstressed reinforcing steel duct, and one end of the first presstressed reinforcing steel is fixedly arranged on lateral surface of the bent cap far from the first block, it is pre- by second
Stress rib is placed in the presstressed reinforcing steel duct of bent cap, and one end of the second presstressed reinforcing steel is fixedly arranged on bent cap far from the second block
Lateral surface；The other end of the first presstressed reinforcing steel is passed through into the presstressed reinforcing steel duct in the first block again, and is fixedly arranged on first gear
The other end of second presstressed reinforcing steel is passed through the presstressed reinforcing steel duct in the second block, and is fixedly arranged on second gear by the lateral surface of block
The lateral surface of block；
S3: synchronous to be fixedly arranged on the first energy consumption reinforcing bar at left and right sides of bent cap and the second energy consumption in the work progress of S2
Reinforcing bar passes through energy consumption reinforcing bar duct, and is anchored in the lateral surface of the first block and the second block respectively；
S4: it is all made of epoxy resin in all seam areas, duct port and is sealed, in the first block, the second block
It is filled with block support platform joint using packing material, that is, completes construction.
In the present invention, the model and number of presstressed reinforcing steel are actually determined that deformed bar uses soap-free emulsion polymeization according to engineering
Post-stretching, it is contemplated that the problems such as durability corrosivity in bar in chlorine salt solution, Zn-based plating layer can be used on the surface of deformed bar
Or epoxy coating, or from optimize on material, using Black Warrior mineral wool composite material, modified aluminium alloy and glass
Fiber reinforced polymeric material (GFRP) makes presstressed reinforcing steel.The tensioning system of anchorage be can with the anchor tool system of two times tensioning,
On the one hand loss of prestress is allowed to reduce in this way, on the other hand can adjust prestressed stretch-draw dynamics according to demand in construction, with
Meets the needs of different anti-seismic performance.
In the present invention, all seam areas, duct port are all made of epoxy resin and are sealed, in the first block, second
Block is filled with block support platform joint using packing material (such as polystyrene foam), and mud after long-time is prevented
Sand is accumulated in interface, prevents the normal rotation of block.
In the present invention, energy-dissipating type wave Self-resetting Antivibration block system the course of work and principle it is as follows: in severe earthquake action
In direction across bridge biggish displacement easily occurs for lower beam body, and beam body impact block first makes energy-consuming device that work be added, and bears energy, directly
It is pulled off to the energy consumption part in internally-arranged type energy-consuming device and/or externally positioned type energy-consuming device, presstressed reinforcing steel bears earthquake central sill later
The energy that body transmits block, after block is by the impact of beam body, block starts to rotate in chimeric interface, there is more displacements
Make energy dissipation, while block can be restored automatically along chimeric interface due to the pulling force by presstressed reinforcing steel, realize block
Self-resetting and rejoin work, block Self-resetting process also can to one opposite direction of beam body restoring force it is multiple convenient for beam body
Position, repeatedly in this way, block fails until presstressed reinforcing steel is pulled off.Seismic energy is largely dissipated in this process, is passed to down
The energy of portion's structure is smaller, protects the substructure and bent cap of bridge well, avoids plastic failure.
Structure of the invention answering after shake is repaired and replace it is also very convenient, as presstressed reinforcing steel failure need to be by construction procedure
Presstressed reinforcing steel and energy-consuming device are replaced, not failing such as need to only relocate that energy-consuming device can (spare threaded sleeve be outer
Set the means such as type energy-consuming device replacement placement energy-consuming device), if a certain block is integrally damaged, also only need to change impaired
Block, the repair after greatly reducing the economic loss and shake in earthquake in this way.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention between block and bent cap by unbonded prestressing tendon connection, load transfer model is clear, when block by
It realizes that energy discharges to rotating when beam body impact, block and bent cap will not be damaged, if presstressed reinforcing steel is unyielding, prestressing force
Muscle has the power being pulled back to block, and block can be restored to its home position, realizes Self-resetting and rejoins work, can be with
Residual displacement after reducing beam body shake.
2, the configuration of the present invention is simple, there is good energy consumption function, and block and beam body interaction can limit the cross of beam body
In a certain range to displacement, by reasonably designing, block, which can be provided, damages the intensity and deformation to match with bridge column
Ability, it can be ensured that bridge maintains normal usage function in violent earthquake.
3, the stop system in the present invention is substantially without maintenance cost, and the reparation difficulty after shake is small, and construction method is simple,
With preferable future in engineering applications.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic perspective view that energy-dissipating type waves Self-resetting Antivibration block system in embodiment.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the face A-A view in Fig. 2.
Fig. 4 is the face B-B view in Fig. 2.
Fig. 5 is the face C-C view in Fig. 2.
Fig. 6 is the face D-D view in Fig. 2.
Fig. 7 is the three dimensional structure diagram of Fig. 6.
Fig. 8 is the face E-E view in Fig. 2.
Fig. 9 is the three dimensional structure diagram of Fig. 8.
Figure 10 is the structural schematic diagram of arc groove and arc convex joint in embodiment.
Figure 11 is the mounting structure schematic diagram of external energy-consumption reinforcing bar in embodiment.
Figure 12 is that (arrow direction is the effect side of seismic force in figure for the rotation schematic diagram of the first block under geological process
To).
Figure 13 is that (arrow direction is the effect side of seismic force in figure for the rotation schematic diagram of the second block under geological process
To).
Figure 14 is hysteresis loop schematic diagram of the stop system under geological process in embodiment.
Marginal data:
101, the first block；102, the second block；2, bent cap；3, unbonded prestressing tendon；301, the first presstressed reinforcing steel；
302, the second presstressed reinforcing steel；4, beam body；5, block support platform；6, presstressed reinforcing steel duct；7, arc groove；8, arc convex；
901, the first energy consumption reinforcing bar；902, the second energy consumption reinforcing bar；10, energy consumption reinforcing bar duct；11, consume energy part；12, connecting support；20, it opens
Draw anchorage；21, pier nose anchor；22, anchor slab；23, anchor bolt.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment:
As shown in figs. 1-11, the energy-dissipating type of the present embodiment waves Self-resetting Antivibration block system, and stop system includes being set to
The first block 101 and the second block 102 of 2 left and right sides of bent cap, the first block 101 and the second block 102 pass through soap-free emulsion polymeization
Presstressed reinforcing steel 3 is connect with bent cap 2, and the lower end of the first block 101 and the second block 102 is equipped with block support platform 5, first gear
The upper end of block 101 and the second block 102 is above the lower end of beam body 4 on bent cap 2.
As shown in Figure 8,9, in the present embodiment, unbonded prestressing tendon 3 includes the first presstressed reinforcing steel 301 and the second prestressing force
Muscle 302, the first block 101 are connect by the first presstressed reinforcing steel 301 with bent cap 2, and the second block 102 passes through the second presstressed reinforcing steel
302 connect with bent cap 2, and the first presstressed reinforcing steel 301 and the second presstressed reinforcing steel 302 are mutually indepedent.Specifically, the first presstressed reinforcing steel
301 one end is anchored in the lateral surface of the first block 101 as stretching end tension ground tackle 20, and the other end is anchored as fixing end
It is pre- in lateral surface (with pier nose anchor 21 be anchored at the anchor slab 22 of bent cap 2 lateral surface on) of the bent cap 2 far from the first block 101, second
One end of stress rib 302 anchors the lateral surface for being set to the second block 102 as stretching end with tension ground tackle 20, and the other end is as solid
Fixed end is anchored in lateral surface of the bent cap 2 far from the second block 102 and (is anchored at the anchor slab 22 of 2 lateral surface of bent cap with pier nose anchor 21
On).
As in Figure 3-5, in the present embodiment, the presstressed reinforcing steel duct 6 of perforation, the first block 101 and the are reserved in bent cap 2
The presstressed reinforcing steel duct 6 of corresponding reserved perforation, elongate holes (this that presstressed reinforcing steel duct 6 is vertically arranged in two blocks 102
It is rectangle in embodiment), and unbonded prestressing tendon 3 is set to the middle and upper part of presstressed reinforcing steel duct 6.
As shown in Figure 10, in the present embodiment, the upper surface of block support platform 5 is equipped with arc groove 7, the first block 101
It is equipped with the arc convex 8 matched with arc groove 7 with the lower surface of the second block 102, and the radius R1 of arc convex 8 is small
In the radius R2 of arc groove 7.
In the present embodiment, energy-consuming device, energy-consuming device are equipped between the first block 101, the second block 102 and bent cap 2
Set on the upper end of unbonded prestressing tendon 3, energy-consuming device includes internally-arranged type energy-consuming device and/or externally positioned type energy-consuming device.
As shown in Figure 6,7, in the present embodiment, internally-arranged type energy-consuming device includes pre- the first consumption for being embedded in 2 left and right sides of bent cap
Can reinforcing bar 901 and the second energy consumption reinforcing bar 902, energy consumption reinforcing bar duct 10 is offered in the first block 101 and the second block 102,
First energy consumption reinforcing bar 901 passes through the energy consumption reinforcing bar duct 10 in the first block 101 and is anchored in and first by anchor bolt 23
The lateral surface of block 101, the second energy consumption reinforcing bar 902 pass through the energy consumption reinforcing bar duct 10 in the second block 102 and by anchoring spiral shells
Bolt 23 is anchored in the lateral surface with the second block 102.
As shown in figure 11, in the present embodiment, externally positioned type energy-consuming device includes being fixedly arranged on 2 end leading flank of bent cap and/or end
Connecting support 12, adjacent connection branch are correspondingly provided on the connecting support 12 of portion trailing flank, the first block 101 and the second block 102
Seat 12 is connected integral by the part 11 that consumes energy.In the present embodiment, energy consumption part 11 can be regular reinforcement, damper, memorial alloy
Equal Energy dissipating materials.
The present embodiment provides a kind of specifications parameter of typical unbonded prestressing tendon 3: nominal diameter 15.2mm's is high-strength
Spend underrelaxation steel strand wires, tensile strength standard value fpk=1860MPa, elastic modulus E=195000MPa.Particular number and specification
(being 4 in the present embodiment) can be adjusted correspondingly according to actual earthquake resistant engineering demand.
The energy consumption reinforcing bars such as first energy consumption energy consumption reinforcing bar 902 of reinforcing bar 901, second in the present embodiment can be regular reinforcement,
Can also be made by oneself using compression spring, the materials such as memorial alloy, quantity and intensity according to requirement of engineering (is 4 in the present embodiment
Root).
In the present embodiment, spare screw shell can also be reserved in 2 two sides of bent cap, spare consumption is also reserved in block
It can reinforcing bar duct 10.In earthquake after built-in energy consumption part damage, spare energy consumption reinforcing bar can be passed through spare energy consumption reinforcing bar duct
10, it turns round into spare threaded sleeve, the installation and replacement of spare energy-consuming device may be implemented, be not necessarily to integral replacing stop system.
Alternatively, directly replacing internally-arranged type energy-consuming device with externally positioned type energy-consuming device after the failure of internally-arranged type energy-consuming device.
The energy-dissipating type of the present embodiment waves the construction method of Self-resetting Antivibration block system, comprising the following steps:
S1: the block support platform 5 of prefabricated or Cast-in-place Bent Cap 2 and two sides, and reserve corresponding presstressed reinforcing steel duct 6；In advance
The first block 101 and the second block 102 are made, and reserves corresponding presstressed reinforcing steel duct 6 and energy consumption reinforcing bar duct 10；
S2: the first block 101, the second block 102 are placed in block support platform 5, the first presstressed reinforcing steel 301 is put
It is placed in the presstressed reinforcing steel duct 6 of bent cap 2, and one end of the first presstressed reinforcing steel 301 is fixedly arranged on bent cap 2 far from the first block
Second presstressed reinforcing steel 302 is placed in the presstressed reinforcing steel duct 6 of bent cap 2 by 101 lateral surface, and by the second presstressed reinforcing steel 302
One end be fixedly arranged on lateral surface of the bent cap 2 far from the second block 102；The other end of the first presstressed reinforcing steel 301 is passed through first again
Presstressed reinforcing steel duct 6 in block 101, and it is fixedly arranged on the lateral surface of the first block 101, by the another of the second presstressed reinforcing steel 302
The presstressed reinforcing steel duct 6 in the second block 102 is held, and is fixedly arranged on the lateral surface of the second block 102；
S3: in the work progress of S2, synchronous the first energy consumption reinforcing bar 901 and second that will be fixedly arranged on 2 left and right sides of bent cap
The reinforcing bar 902 that consumes energy passes through energy consumption reinforcing bar duct 10, and is anchored in the lateral surface of the first block 101 and the second block 102 respectively；
S4: it is all made of epoxy resin in all seam areas, duct port and is sealed, in the first block 101, second gear
Block 102 is filled with 5 joint of block support platform using polystyrene foam, that is, completes construction.
Energy-dissipating type in the present embodiment waves after Self-resetting Antivibration block system is damaged, repair and replacement process with it is above-mentioned
Construction method is identical.
It as shown in figs. 12-14, is the action principle schematic diagram of the present embodiment stop system, the stop system in the present embodiment
Independently of each other and there is runback bit function.In Figure 14, the left side be only unbonded prestressing tendon 3 and without energy-consuming device, centre is
Only energy-consuming device and unbonded prestressing tendon 3, the right are that have unbonded prestressing tendon 3 and energy-consuming device simultaneously.
Claims (10)
1. a kind of energy-dissipating type waves Self-resetting Antivibration block system, which is characterized in that the stop system includes being set to bent cap (2)
The first block (101) and the second block (102) of the left and right sides, first block (101) and the second block (102) pass through
Unbonded prestressing tendon (3) is connect with bent cap (2), and the lower end of first block (101) and the second block (102) is equipped with gear
Block support platform (5).
2. stop system according to claim 1, which is characterized in that the unbonded prestressing tendon (3) includes first pre-
Stress rib (301) and the second presstressed reinforcing steel (302), first block (101) are connected by the first presstressed reinforcing steel (301) and bent cap
Connect, second block (102) is connect by the second presstressed reinforcing steel (302) with bent cap (2), and the first presstressed reinforcing steel (301) and
Second presstressed reinforcing steel (302) is mutually indepedent.
3. stop system according to claim 2, which is characterized in that one end of first presstressed reinforcing steel (301) is fixed
Lateral surface in the first block (101), the other end be fixedly arranged on bent cap (2) far from the first block (101) lateral surface, described second
One end of presstressed reinforcing steel (302) is fixedly arranged on the lateral surface of the second block (102), and the other end is fixedly arranged on bent cap (2) far from second gear
The lateral surface of block (102).
4. stop system according to claim 2, which is characterized in that perforation is equipped with presstressed reinforcing steel hole in the bent cap (2)
Road (6) is correspondingly provided with the presstressed reinforcing steel duct (6) of perforation in first block (101) and the second block (102), described
The elongate holes that presstressed reinforcing steel duct (6) is vertically arranged, and the unbonded prestressing tendon (3) is set to presstressed reinforcing steel duct
(6) middle and upper part.
5. stop system according to claim 1, which is characterized in that the upper surface of the block support platform (5) is equipped with
The lower surface of arc groove (7), first block (101) and the second block (102) is equipped with and the arc groove (7) phase
The arc convex (8) of cooperation, and the radius R1 of the arc convex (8) is less than the radius R2 of arc groove (7).
6. stop system according to any one of claims 1-5, which is characterized in that first block (101), second
Energy-consuming device is equipped between block (102) and bent cap (2), the energy-consuming device is set to the upper end of unbonded prestressing tendon (3),
The energy-consuming device includes internally-arranged type energy-consuming device and/or externally positioned type energy-consuming device.
7. stop system according to claim 6, which is characterized in that the internally-arranged type energy-consuming device includes being fixedly arranged on bent cap
(2) the first energy consumption reinforcing bar (901) and the second energy consumption reinforcing bar (902), first block (101) and the second block at left and right sides of
(102) energy consumption reinforcing bar duct (10) is offered in, first energy consumption reinforcing bar (901) passes through the consumption in the first block (101)
Energy reinforcing bar duct (10) and the lateral surface for being fixedly arranged on the first block (101), second energy consumption reinforcing bar (902) pass through the second block
(102) energy consumption reinforcing bar duct (10) in and the lateral surface for being fixedly arranged on the second block (102).
8. stop system according to claim 7, which is characterized in that first energy consumption reinforcing bar (901) and the second energy consumption
Reinforcing bar (902) is directly embedded in the left and right sides of bent cap (2) in advance or passes through threaded sleeve and lid that the left and right sides of bent cap (2) is reserved
Beam (2) is affixed.
9. stop system according to claim 6, which is characterized in that the externally positioned type energy-consuming device includes being fixedly arranged on bent cap
(2) connecting support (12) of end leading flank and/or end trailing flank, on first block (101) and the second block (102)
It is correspondingly provided with connecting support (12), the adjacent connecting support (12) is connected integral by energy consumption part (11).
10. the construction method that a kind of energy-dissipating type waves Self-resetting Antivibration block system, which comprises the following steps:
S1: the block support platform (5) of prefabricated or Cast-in-place Bent Cap (2) and two sides, and reserve corresponding presstressed reinforcing steel duct (6)；
Prefabricated first block (101) and the second block (102), and reserve corresponding presstressed reinforcing steel duct (6) and energy consumption reinforcing bar duct
(10)；
S2: the first block (101), the second block (102) are placed on block support platform (5), by the first presstressed reinforcing steel
(301) it is placed in the presstressed reinforcing steel duct (6) of bent cap (2), and one end of the first presstressed reinforcing steel (301) is fixedly arranged on bent cap
(2) far from the lateral surface of the first block (101), the second presstressed reinforcing steel (302) is placed in the presstressed reinforcing steel duct of bent cap (2)
(6) in, and one end of the second presstressed reinforcing steel (302) is fixedly arranged on the lateral surface of bent cap (2) far from the second block (102)；Again will
The other end of first presstressed reinforcing steel (301) passes through the presstressed reinforcing steel duct (6) in the first block (101), and is fixedly arranged on first gear
The other end of second presstressed reinforcing steel (302) is passed through the presstressed reinforcing steel duct in the second block (102) by the lateral surface of block (101)
(6), and it is fixedly arranged on the lateral surfaces of the second block (102)；
S3: in the work progress of S2, synchronization will be fixedly arranged on the first energy consumption reinforcing bar (901) and second at left and right sides of bent cap (2)
Consume energy reinforcing bar (902) pass through energy consumption reinforcing bar duct (10), and be anchored in the first block (101) and the second block (102) respectively
Lateral surface；
S4: it is all made of epoxy resin in all seam areas, duct port and is sealed, in the first block (101), the second block
(102) it is filled with block support platform (5) joint using packing material, that is, completes construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910329834.XA CN110004818B (en) | 2019-04-23 | 2019-04-23 | Energy-consumption type swinging self-resetting anti-seismic stop block system and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329834.XA CN110004818B (en) | 2019-04-23 | 2019-04-23 | Energy-consumption type swinging self-resetting anti-seismic stop block system and construction method thereof |
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| CN110004818B CN110004818B (en) | 2024-05-03 |
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| CN110485272A (en) * | 2019-09-16 | 2019-11-22 | 莆田学院 | Formula bridge shock-proof check block device is raised in a kind of rolling |
| CN110565504A (en) * | 2019-08-29 | 2019-12-13 | 南昌大学 | Multifunctional anti-seismic stop block structure capable of preventing seismic damage |
| CN110777682A (en) * | 2019-12-06 | 2020-02-11 | 湘潭大学 | Anti-seismic reinforcing method for bridge transverse stop block |
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| Publication number | Publication date |
|---|---|
| CN110004818B (en) | 2024-05-03 |
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