CN104060530A - Leak-proof bridge expansion joint and use method thereof - Google Patents
Leak-proof bridge expansion joint and use method thereof Download PDFInfo
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- CN104060530A CN104060530A CN201410288169.1A CN201410288169A CN104060530A CN 104060530 A CN104060530 A CN 104060530A CN 201410288169 A CN201410288169 A CN 201410288169A CN 104060530 A CN104060530 A CN 104060530A
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Abstract
The invention discloses a leak-proof bridge expansion joint and a use method thereof, and belongs to the field of bridge construction. The leak-proof bridge expansion joint mainly comprises a bridge pier cap, lateral connection reinforcement, a section steel expansion joint, two deformed steel, section steel connection reinforcement, an M-shaped rubber sealing tape and the like. Upper and lower inflatable bags and a plurality of communicating ducts respectively communicated with the upper and lower inflatable bags are respectively arranged at the upper and lower ends of the two sides of the rubber sealing tape, and the two sides of the rubber sealing tape and the two deformed steel are installed in an embedded way; the rubber sealing tape has an internal inflating or deflating functions by the improvement, i.e., the inflated rubber sealing tape and mounting grooves of the deformed steel can be tightly embedded to ensure the sealing quality of the bridge expansion joint in various use environments, and the deflated rubber sealing tape can freely move to be taken out in the mounting grooves of the deformed steel to facilitate the detection, maintenance and replacement of the rubber sealing tape. The improved structure also has the advantages of simple structure, durability, convenience in maintenance, cost reduction and the like, thus playing an all-weather water leak-proof role.
Description
Technical field
The present invention relates to a kind of field of bridge construction, refer in particular to antiseep bridge expanssion joint and using method thereof.
Background technology
Bridge expanssion joint is the important component part of bridge superstructure, is conventionally arranged between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap.Bridge expanssion joint is mainly to consist of Bridge Pier cap, many horizontal connecting reinforcements and type steel expansion joint, and being the rubber seal tape of " M " type and Duo Gen shaped steel connecting reinforcement etc. by deformed steel, the cross section of two hot rolling global formations, type steel expansion joint forms, the both sides of rubber seal tape are mounted in the mounting groove of two deformed steels, its effect is to prevent that the foreign material on bridge floor from falling into the normal work that consequently affects shrinkage joint in bridge expanssion joint, can also guide rainwater to discharge outside bridge expanssion joint along the end face of rubber seal tape simultaneously.
Therefore, the closely connected degree of build-in of rubber seal tape and deformed steel mounting groove will determine the airtight quality of bridge expanssion joint, due to factors such as deformed steel mounting groove, rubber seal tape making and construction error and ageing of rubbers, and bridge expanssion joint is again under the quiet moving alternation effect in round-the-clock environment and vehicular load, rubber seal tape and deformed steel mounting groove often can not closely connected build-ins, and Here it is causes the main cause of bridge expanssion joint percolating water.
At present, in order to prevent bridge expanssion joint percolating water phenomenon, the most easy method is to adopt the bonding deformed steel of glass cement and the rubber seal tape of the silicone composition of silicate of soda (Na2OmSiO2) and acetic acid and Organic to carry out waterproof, but bridge expanssion joint is used conventionally at-40 ℃～60 ℃ round-the-clock environment, the general easy inefficacy of the water resistance of glass cement during low temperature, and glass cement is aging very fast, and under the quiet moving alternate load effect of vehicle, the cementation of glass cement is poor.Disclosed Chinese patent name is called " a kind of bridge expanssion joint waterproof construction ", the patent No.: ZL201220415225.X, it is that the elastic water-proof bar cavity inside blanketing gas seal isolation shrinkage joint of bridge expanssion joint is inner and extraneous, and anti-sealing enters pontic inside.The elastic water-proof bar size of this bridge expanssion joint is less, can not use on the large bridge across footpath; Meanwhile, the elastic water-proof bar of bridge expanssion joint, under inflating condition, is repeatedly to push as flexible main member, fatigue damage very easily, particularly during high temperature, elastic water-proof bar decrement is maximum, cause the air pressure in elastic water-proof bar to raise, damage even more serious; And elastic water-proof bar is directly installed on bridge floor surface, easily damages, be difficult for repairing.
Summary of the invention
Goal of the invention of the present invention is to overcome the defect of prior art and a kind of simple structure, firm and durable, easy to maintenance, cost saving are provided, can play antiseep bridge expanssion joint and the using method thereof of round-the-clock anti-seep water.
Technical problem of the present invention is achieved through the following technical solutions:
An antiseep bridge expanssion joint, comprises Bridge Pier cap, many horizontal connecting reinforcements and type steel expansion joint; Described type steel expansion joint comprise many shaped steel connecting reinforcements, two deformed steels and both sides respectively build-in be connected to two rubber seal tapes between deformed steel, the upper/lower terminal of described rubber seal tape both sides is respectively equipped with gas cell and lower gas cell; In described each, gas cell and each lower gas cell are along the length direction of rubber seal tape and extend and form, one end of gas cell sealing on each, and the external valve cock of the other end, the two ends of each lower gas cell are all sealed; Between the upper and lower gas cell of described rubber seal tape the same side, be equipped with a plurality of UNICOM ducts that are communicated with respectively upper and lower gas cell.
Described rubber seal tape cross section is " M " type, and in each in rubber seal tape, gas cell is all rounded with the cross section of each lower gas cell, and in described each, gas cell to the blowing pressure at the mounting groove top of deformed steel is
, and meet following formula:
Formula one,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell or the lower gas cell center angle to any connecting line of periphery and horizontal axis,
for upper gas cell or lower gas cell periphery with
corresponding any arc length, the differential of the arc is long
;
The suffered inflation pulling force in described rubber seal tape both sides is also
, the inflation tensile stress of rubber seal tape both sides
should meet following formula:
Formula two,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for the thickness of the weakness in rubber seal tape both sides, 14MPa is the ultimate tensile strength of at present conventional rubber seal carrying material, and by formula two, is drawn the inflation pressure of rubber seal tape
need meet following formula:
Formula three,
In formula,
for the radius of upper and lower gas cell,
thickness for the weakness in rubber seal tape both sides;
In like manner can obtain the upper gas cell of rubber seal tape or the suffered inflation pulling force of the cyst wall of lower gas cell
should meet following formula:
Formula four,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell or the lower gas cell center angle to any connecting line of periphery and horizontal axis,
for upper gas cell or lower gas cell periphery with
corresponding any arc length, the differential of the arc is long
;
The wall thickness of the upper gas cell of described rubber seal tape or the cyst wall thinnest part of lower gas cell is
, its suffered inflation tensile stress
should meet following formula:
Formula five,
In formula,
for the suffered inflation pulling force of cyst wall of upper gas cell or lower gas cell,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell, 14MPa is the ultimate tensile strength of at present conventional rubber seal carrying material;
The inflation pressure of described rubber seal tape
need meet following formula:
Formula six,
In formula, m is the wall thickness of the cyst wall thinnest part of upper gas cell or lower gas cell,
radius for upper and lower gas cell;
Described rubber seal tape inflation pressure
need be greater than 1 atmospheric pressure, need to meet following formula:
Formula seven,
With
In formula,
for the radius of upper and lower gas cell,
for the thickness of the weakness in rubber seal tape both sides, m is the wall thickness of the cyst wall thinnest part of upper gas cell or lower gas cell.
Length direction along rubber seal tape between the upper and lower gas cell of described rubber seal tape the same side arranges UNICOM duct every the spacing of 20 ~ 30mm, and the cross section in each UNICOM duct is circle.
It is on the opposite face of two deformed steels, to be respectively equipped with the mounting groove extending along deformed steel length direction that build-in syndeton is made with two deformed steels respectively in " M " type both sides of described rubber seal tape, and " M " type both sides of described rubber seal tape coincide and are mounted in this mounting groove respectively.
Described rubber seal tape is that neoprene or natural rubber or ethylene propylene diene rubber manufacture form, and this rubber seal tape is applicable to the area of-25 ℃ ~ 60 ℃, hot strength >=14MPa, stroke≤80mm.
Described deformed steel is applicable to temperature in the time of-40 ℃ ~ 60 ℃, should be not less than Q235D steel strength.
Described Bridge Pier cap comprises many embedded bars and builds shrinkage joint interface concrete, described many shaped steel connecting reinforcements and Duo Gen embedded bar are welded and fixed successively, and penetrate and weld many horizontal connecting reinforcements in many shaped steel connecting reinforcements that complete in welding and Duo Gen embedded bar.
Described shrinkage joint interface concrete is steel fibrous concrete.
The using method concrete operation step of described antiseep bridge expanssion joint is as follows:
Step 1, on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap, deformed steel is set respectively, and be welded and fixed many shaped steel connecting reinforcements, many embedded bars and the horizontal connecting reinforcement of Duo Gen, and build shrinkage joint interface concrete, " M " type rubber seal tape that build-in is installed is set between two deformed steels;
Step 2, valve cock on rubber seal tape is connected to upper high-pressure pump, and make to be filled with in rubber seal tape specified air pressure by high-pressure pump;
Step 3, after finding rubber seal tape gas leakage, need check valve cock and change valve cock parts inflation again after replacing;
Step 4, still cannot solve gas leakage problem when step 3, the gas in emptying rubber seal tape, between the mounting groove of deformed steel and rubber seal tape, pour into sliding agent, and extract rubber seal tape out from a side, check the air leak position on rubber seal tape and repair, again the rubber seal tape after repairing is reloaded in the mounting groove of deformed steel, finally rinse sliding agent well and to again inflating in rubber seal tape.
Compared with prior art, the present invention is mainly respectively equipped with upper gas cell and lower gas cell by the upper/lower terminal that forms type steel expansion joint " M " type rubber seal tape both sides, and should be connected as build-in with two deformed steels respectively with the rubber seal tape both sides of upper and lower gas cell, thereby form type steel expansion joint, and on, between lower gas cell, be also provided with in a plurality of connections respectively, the UNICOM duct of lower gas cell, by said structure, improve and make whole rubber seal tape possess the inner function of inflating or exitting, tight build-in can be carried out with the mounting groove of deformed steel in the rubber seal tape both sides after inflation, therefore can guarantee the airtight quality of bridge expanssion joint under various environments for use, and rubber seal tape after venting can be freely in the mounting groove of deformed steel mobile extraction out, facilitate the detection of rubber seal tape, maintenance and replacing, structure after improvement also has simple structure, firm and durable, easy to maintenance, the advantages such as cost saving, thereby can play the effect of round-the-clock anti-seep water.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (elevational schematic view).
Fig. 2 is the top view (floor map) of Fig. 1.
Fig. 3 is A-A cutaway view Amplified image of Fig. 1.
Fig. 4 be rubber seal tape with deformed steel between the facade sectional structure schematic diagram that is connected as build-in.
Fig. 5 is the Force Calculation schematic diagram of upper gas cell.
The specific embodiment
To the embodiment of the present invention, elaborate again by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 5,1. Bridge Pier cap, 11. embedded bars, 12. shrinkage joint interface concrete, 2. gas cell on type steel expansion joint, 21. deformed steels, 211. mounting grooves, 22. rubber seal tapes, 221., 222. times gas cells, 223. UNICOM ducts, 224. valve cocks, 23. shaped steel connecting reinforcements, 3. horizontal connecting reinforcement.
Antiseep bridge expanssion joint and using method thereof, as shown in Figure 1 and Figure 2, a kind of air filling type antiseep bridge expanssion joint and using method are mainly provided, it is compared with the important component part of Large Span Bridges superstructure, is conventionally arranged between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap 1.
Described air filling type antiseep bridge expanssion joint is compared with existing bridge expanssion joint, its difference is to be provided with pneumatic structure in rubber seal tape 22, existing bridge expanssion joint, once it is all cannot repair and can only change that the rubber seal tape using in it damages, and this rubber seal tape 22 is to rely on mechanical type to be mounted in the mounting groove 211 of deformed steel 21, once after rubber seal tape is installed, just cannot, in good condition from interior mobile extraction the out of mounting groove 211, produce waste.
Described antiseep bridge expanssion joint is as shown in Fig. 1 ~ Fig. 4, mainly by Bridge Pier cap 1, many horizontal connecting reinforcements 3 and type steel expansion joint 2, and type steel expansion joint 2 comprise many shaped steel connecting reinforcements 23, two deformed steels 21 and both sides respectively build-in be connected to two rubber seal tapes 22 between deformed steel 21.Two described deformed steels 21 be on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap 1, carry out respectively hard-wired, interface between this two beam-ends, between beam-ends and Bridge Pier cap 1 need be reserved according to the specifications and models of type steel expansion joint 2,21 being customized by factory across footpath and width according to bridge of two deformed steels, it is applicable to temperature in the time of-40 ℃～60 ℃, should be not less than Q235D steel strength.
Described Bridge Pier cap 1 comprises many embedded bars 11 and builds shrinkage joint interface concrete 12, during construction, need weld successively many shaped steel connecting reinforcements 23 and Duo Gen embedded bar 11, and penetrate and weld many horizontal connecting reinforcements 3 in many shaped steel connecting reinforcements 23 that complete in welding and Duo Gen embedded bar 11, spacing and the size of shaped steel connecting reinforcement 23 and embedded bar 11 match, welding position is accurate, main connecting elements for type steel expansion joint 2, at many shaped steel connecting reinforcements 23, after many embedded bars 11 and the horizontal connecting reinforcement 3 of Duo Gen are welded and fixed, also need to build shrinkage joint interface concrete 12.
Described shrinkage joint interface concrete 12 is generally special concrete, as steel fibrous concrete, it makes between two beam-ends of type steel expansion joint 2 and reserved bridge floor, combining closely between beam-ends and Bridge Pier cap 1 is integral, the maintenance shrinkage joint interface concrete 12 that covers and sprinkle water, to guarantee the quality of shrinkage joint interface concrete 12.
Described rubber seal tape 22 cross sections are " M " type, and adopt neoprene or natural rubber or ethylene propylene diene rubber manufacture to form, and this rubber seal tape 22 is applicable to the area of-25 ℃ ~ 60 ℃, hot strength >=14MPa, stroke≤80mm.
" M " type both sides of described rubber seal tape 22 are connected as build-in with two deformed steels 21 respectively, make it to form type steel expansion joint 2 integral body, its syndeton is: on the opposite face of two deformed steels 21, be respectively equipped with the mounting groove 211 extending along deformed steel length direction, and " M " type both sides of rubber seal tape 22 coincide and are mounted in this mounting groove 211 respectively.
The upper/lower terminal of " M " type both sides of described rubber seal tape 22 is also respectively equipped with the rounded upper gas cell 221 of cross section and lower gas cell 222, this upper and lower gas cell is all mounted in the mounting groove 211 of deformed steel 21 together in company with rubber seal tape 22 " M " type both sides, and the size of upper and lower gas cell is mainly determined according to the strength of materials of rubber seal tape 22 and size; In described each, gas cell 221 and each lower gas cell 222 are to extend in parallel along the length direction of rubber seal tape 22 and form, and between the upper and lower gas cell of " M " type rubber seal tape the same side, be provided with a plurality of UNICOMs duct 223, this UNICOM duct is that the length direction along rubber seal tape 22 arranges every the spacing of 20 ~ 30mm, and can be communicated with respectively upper and lower gas cell, the cross section in each UNICOM duct 223 is circle.
One end of gas cell 221 sealing in described each, the other end is cementing valve cock 224, and by valve cock connection high-pressure pump, by high-pressure pump, make to be filled with in rubber seal tape 22 specified air pressure, this just make rubber seal tape both sides can and the mounting groove 211 of deformed steel 21 between form and fit tightly, and after inflation completes, there is self-enclosed performance, can be water-tight within service life, air tight; The two ends of each described lower gas cell 222 are all sealed.The structure design of above-mentioned gas cell can guarantee after the inner inflatable of " M " type rubber seal tape 22, and " M " type both sides of this rubber seal tape can coincide and be mounted in the mounting groove 211 of deformed steel 21.Simultaneously, inflate in upper gas cell 221 in rubber seal tape 22, lower gas cell 222He UNICOM duct 223, only as tight mounting groove 211 use of build-in deformed steel 21, and do not participate in telescopic action, this design distinguished relies on mechanical hermetically-sealed construction in existing rubber seal tape 22, therefore make the 22 indefatigability damages of " M " type rubber seal tape.
In described upper and lower gas cell, be filled with gas and need to meet according to actual needs following formula, as shown in Figure 5, in " M " type rubber seal tape 22, be filled with after gas, the blowing pressure at mounting groove 211 tops of 221 pairs of deformed steels 21 of upper gas cell is P, and meets following formula:
Formula one,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell 221 or the lower gas cell 222 centers angle to any connecting line of periphery and horizontal axis, this horizontal axis i.e. X-axis as shown in Figure 5,
for upper gas cell 221 or lower gas cell 222 peripheries with
corresponding any arc length, the differential of the arc is long
;
The suffered inflation pulling force in rubber seal tape 22 both sides is also
, the inflation tensile stress of rubber seal tape 22 both sides
should meet following formula:
Formula two,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell, 14MPa is the ultimate tensile strength of at present conventional rubber seal tape 22 materials,
for the thickness of the weakness in rubber seal tape 22 both sides, and by formula two, drawn the inflation pressure of rubber seal tape 22
need meet following formula:
Formula three,
In formula,
for the radius of upper and lower gas cell,
thickness for the weakness in rubber seal tape 22 both sides;
In like manner can obtain the upper gas cell 221 of rubber seal tape 22 or the suffered inflation pulling force of the cyst wall of lower gas cell 222
should meet following formula:
Formula four,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell 221 or the lower gas cell 222 centers angle to any connecting line of periphery and horizontal axis, this horizontal axis i.e. X-axis as shown in Figure 5,
for upper gas cell 221 or lower gas cell 222 peripheries with
corresponding any arc length, the differential of the arc is long
;
The wall thickness of the upper gas cell 221 of rubber seal tape 22 or the cyst wall thinnest part of lower gas cell 222 is
, its suffered inflation tensile stress
should meet following formula:
Formula five,
In formula,
for the suffered inflation pulling force of cyst wall of upper gas cell 221 or lower gas cell 222,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell, 14MPa is the ultimate tensile strength of at present conventional rubber seal tape 22 materials;
The inflation pressure of rubber seal tape 22
need meet following formula:
Formula six,
In formula, m is the wall thickness of the cyst wall thinnest part of upper gas cell 221 or lower gas cell 222,
radius for upper and lower gas cell;
Rubber seal tape 22 inflation pressure
need be greater than 1 atmospheric pressure, need to meet following formula:
Formula seven,
With
In formula,
for the radius of upper and lower gas cell,
for the thickness of the weakness in rubber seal tape 22 both sides, m is the wall thickness of the cyst wall thinnest part of upper gas cell 221 or lower gas cell 222.
For concrete " M " type rubber seal tape 22 inflation pressure
need draw through overtesting.
The using method of described antiseep bridge expanssion joint mainly comprises the following steps:
Step 1, on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap 1, deformed steel 21 is set respectively, and be welded and fixed many shaped steel connecting reinforcements 23, many embedded bars 11 and the horizontal connecting reinforcement 3 of Duo Gen, and build " M " type rubber seal tape 22 that build-in is installed is set between 12, two deformed steels 21 of shrinkage joint interface concrete;
Step 2, the valve cock on rubber seal tape 22 224 is connected to upper high-pressure pump, and make to be filled with in rubber seal tape 22 specified air pressure by high-pressure pump;
Step 3, after finding rubber seal tape 22 gas leakage, need check valve cock 224 and change valve cock parts inflation again after replacing;
Step 4, still cannot solve gas leakage problem when step 3, the gas in emptying rubber seal tape 22, between the mounting groove 211 of deformed steel 21 and rubber seal tape 22, pour into the sliding agent that can not can damage deformed steel 21 and dissolving rubber band 22, and extract rubber seal tape 22 out from a side, check the air leak position on rubber seal tape and repair, again the rubber seal tape after repairing is reloaded in the mounting groove 211 of deformed steel 21, finally rinse sliding agent well and to again inflating in rubber seal tape 22.
The present invention describes the operating procedure of this antiseep bridge expanssion joint again in detail with two specific embodiments.
Embodiment 1(80mm antiseep bridge expanssion joint)
The using method operating procedure of described antiseep bridge expanssion joint is as follows:
1. make air filling type rubber seal tape
A, the upper/lower terminal of " M " type rubber seal tape 22 both sides that adopt neoprene to make is produced respectively to gas cell 221 and lower gas cell 222 on the toroidal extending in parallel along rubber seal tape length direction, between the upper and lower gas cell of rubber seal tape the same side, every 20～30mm spacing, UNICOM duct 223 is set so that mutual UNICOM between upper and lower gas cell, the diameter of upper and lower gas cell is 6～8mm, and the diameter in UNICOM duct 223 is 4～6mm.
B, by the 221 one end sealings of upper gas cell along its length of rubber seal tape 22, the external valve cock 224 of the other end, the two ends of lower gas cell 222 are all sealed.
2. two deformed steels are installed
C, on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap 1, lay respectively deformed steel 21.
D, weld many shaped steel connecting reinforcements 23 and Duo Gen embedded bar 11 successively.
In e, many shaped steel connecting reinforcements 23 that complete in welding and Duo Gen embedded bar 11, penetrate many horizontal connecting reinforcements 3 welding.
3. build shrinkage joint interface concrete
F, build shrinkage joint interface concrete 12, shrinkage joint interface concrete is generally special concrete, as steel fibrous concrete.
G, covering the maintenance shrinkage joint interface concrete 12 of sprinkling water.
4. rubber seal tape is installed
H, rubber seal tape 22 is installed between two deformed steels 21, and the both sides of rubber seal tape are mounted in respectively in the mounting groove 211 of deformed steel 21.
5. rubber seal tape inflation
Valve cock 224 on i, high-pressure pump connecting rubber sealing band 22, is inflated to 2.0～2.5 atmospheric pressure,
~
.
6. rubber seal tape maintenance
J, when finding rubber seal tape 22 gas leakage, first need to check valve cock 224, change valve cock parts, again with high-pressure pump, inflate; As still do not solved rubber seal tape gas leak phenomenon,
K, the interior gas of emptying rubber seal tape 22, between the mounting groove 211 of deformed steel 21 and rubber seal tape, pour into sliding agent, and extract rubber seal tape 22 out from a side, check the air leak position on rubber seal tape and repair, again the rubber seal tape after repairing is reloaded in the mounting groove 211 of deformed steel 21, finally with the clean sliding agent of water under high pressure and to again inflating in rubber seal tape 22.
Embodiment 2(40mm antiseep bridge expanssion joint)
The using method operating procedure of described antiseep bridge expanssion joint is as follows:
1. make air filling type rubber seal tape
A, the upper/lower terminal of " M " type rubber seal tape 22 both sides that adopt natural rubber to make is produced respectively to gas cell 221 and lower gas cell 222 on the toroidal extending in parallel along rubber seal tape length direction, between the upper and lower gas cell of rubber seal tape the same side, every 25～35mm spacing, UNICOM duct 223 is set so that mutual UNICOM between upper and lower gas cell, the diameter of upper and lower gas cell is 5～7mm, and the diameter in UNICOM duct 223 is 3～5mm.
B, by the 221 one end sealings of upper gas cell along its length of rubber seal tape 22, the external valve cock 224 of the other end, the two ends of lower gas cell 222 are all sealed.
2. two deformed steels are installed
C, on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap 1, lay respectively deformed steel 21.
D, weld many shaped steel connecting reinforcements 23 and Duo Gen embedded bar 11 successively.
In e, many shaped steel connecting reinforcements 23 that complete in welding and Duo Gen embedded bar 11, penetrate many horizontal connecting reinforcements 3 welding.
3. build shrinkage joint interface concrete
F, build shrinkage joint interface concrete 12, shrinkage joint interface concrete is generally special concrete, as steel fibrous concrete.
G, covering the maintenance shrinkage joint interface concrete 12 of sprinkling water.
4. rubber seal tape is installed
H, rubber seal tape 22 is installed between two deformed steels 21, and the both sides of rubber seal tape are mounted in respectively in the mounting groove 211 of deformed steel 21.
5. rubber seal tape inflation
The valve cock 224 of i, high-pressure pump connecting rubber sealing band 22, is inflated to 1.8～2.2 atmospheric pressure,
~
.
6. rubber seal tape maintenance
J, when finding rubber seal tape 22 gas leakage, first need to check valve cock 224, change valve cock parts, again with high-pressure pump, inflate; As still do not solved rubber seal tape gas leak phenomenon,
K, the interior gas of emptying rubber seal tape 22, between the mounting groove 211 of deformed steel 21 and rubber seal tape 22, pour into sliding agent, and extract rubber seal tape out from a side, check the air leak position on rubber seal tape 22 and repair, again the rubber seal tape after repairing is reloaded in the mounting groove 211 of deformed steel 21, finally with the clean sliding agent of water under high pressure and to again inflating in rubber seal tape 22.
Embodiment of the present invention is only not used in and limits the scope of the invention for the present invention is described.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (9)
1. an antiseep bridge expanssion joint, comprises Bridge Pier cap (1), many horizontal connecting reinforcements (3) and type steel expansion joint (2); Described type steel expansion joint (2) comprise many shaped steel connecting reinforcements (23), two deformed steels (21) and both sides respectively build-in be connected to the rubber seal tape (22) between two deformed steels (21), it is characterized in that the upper/lower terminal of described rubber seal tape (22) both sides is respectively equipped with gas cell (221) and lower gas cell (222); Gas cell in described each (221) and each lower gas cell (222) are along the length direction of rubber seal tape (22) and extend and form, one end sealing of gas cell on each (221), the external valve cock of the other end (224), the two ends of each lower gas cell (222) are all sealed; Between the upper and lower gas cell (221,222) of described rubber seal tape (22) the same side, be equipped with a plurality of UNICOM ducts (223) that are communicated with respectively upper and lower gas cell.
2. antiseep bridge expanssion joint according to claim 1, it is characterized in that described rubber seal tape (22) cross section is " M " type, in each in rubber seal tape (22), the cross section of gas cell (221) and each lower gas cell (222) is all rounded, gas cell in described each (221) is P to the blowing pressure at the mounting groove of deformed steel (21) (211) top, and meets following formula:
Formula one,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell (221) or lower gas cell (222) the center angle to any connecting line of periphery and horizontal axis,
for upper gas cell (221) or lower gas cell (222) periphery with
corresponding any arc length, the differential of the arc is long
;
The suffered inflation pulling force in described rubber seal tape (22) both sides is also
, the inflation tensile stress of rubber seal tape (22) both sides
should meet following formula:
Formula two,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for the thickness of the weakness in rubber seal tape (22) both sides, 14MPa is the ultimate tensile strength of at present conventional rubber seal tape (22) material, and by formula two, is drawn the inflation pressure of rubber seal tape (22)
need meet following formula:
Formula three,
In formula,
for the radius of upper and lower gas cell,
thickness for the weakness in rubber seal tape (22) both sides;
In like manner can obtain the upper gas cell (221) of rubber seal tape (22) or the suffered inflation pulling force of cyst wall of lower gas cell (222)
should meet following formula:
Formula four,
In formula,
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell,
for upper gas cell (221) or lower gas cell (222) the center angle to any connecting line of periphery and horizontal axis,
for upper gas cell (221) or lower gas cell (222) periphery with
corresponding any arc length, the differential of the arc is long
;
The wall thickness of the upper gas cell (221) of described rubber seal tape (22) or the cyst wall thinnest part of lower gas cell (222) is m, its suffered inflation tensile stress
should meet following formula:
Formula five,
In formula,
for the suffered inflation pulling force of cyst wall of upper gas cell (221) or lower gas cell (222),
for the inflation pressure of upper and lower gas cell,
for the radius of upper and lower gas cell, 14MPa is the ultimate tensile strength of at present conventional rubber seal tape (22) material;
The inflation pressure of described rubber seal tape (22)
need meet following formula:
Formula six,
In formula, m is the wall thickness of the cyst wall thinnest part of upper gas cell (221) or lower gas cell (222),
radius for upper and lower gas cell;
Described rubber seal tape (22) inflation pressure
need be greater than 1 atmospheric pressure, need to meet following formula:
Formula seven,
With
In formula,
for the radius of upper and lower gas cell,
for the thickness of the weakness in rubber seal tape (22) both sides, m is the wall thickness of the cyst wall thinnest part of upper gas cell (221) or lower gas cell (222).
3. antiseep bridge expanssion joint according to claim 1, length direction along rubber seal tape between the upper and lower gas cell of rubber seal tape (22) the same side described in it is characterized in that arranges UNICOM duct (223) every the spacing of 20 ~ 30mm, and the cross section in each UNICOM duct (223) is circle.
4. antiseep bridge expanssion joint according to claim 1, it is on the opposite face of two deformed steels (21), to be respectively equipped with the mounting groove (211) extending along deformed steel length direction that build-in syndeton is made with two deformed steels (21) respectively in " M " type both sides of the rubber seal tape (22) described in it is characterized in that, " M " type both sides of described rubber seal tape (22) coincide and are mounted in this mounting groove (211) respectively.
5. antiseep bridge expanssion joint according to claim 1, it is characterized in that described rubber seal tape (22) forms for neoprene or natural rubber or ethylene propylene diene rubber manufacture, this rubber seal tape (22) is applicable to the area of-25 ℃ ~ 60 ℃, hot strength >=14MPa, stroke≤80mm.
6. antiseep bridge expanssion joint according to claim 1, is characterized in that described deformed steel (21) is applicable to temperature in the time of-40 ℃ ~ 60 ℃, should be not less than Q235D steel strength.
7. antiseep bridge expanssion joint according to claim 1, it is characterized in that described Bridge Pier cap (1) comprises many embedded bars (11) and builds shrinkage joint interface concrete (12), described many shaped steel connecting reinforcements (23) and many embedded bars (11) are welded and fixed successively, and penetrate and weld many horizontal connecting reinforcements (3) in the many shaped steel connecting reinforcements (23) that complete in welding and many embedded bars (11).
8. antiseep bridge expanssion joint according to claim 7, is characterized in that described shrinkage joint interface concrete (12) is steel fibrous concrete.
9. application rights requires a using method for the antiseep bridge expanssion joint described in 1, it is characterized in that the concrete operation step of the method is as follows:
Step 1, on the interface between two beam-ends of reserved bridge floor, between beam-ends and Bridge Pier cap (1), deformed steel (21) is set respectively, and be welded and fixed many shaped steel connecting reinforcements (23), many embedded bars (11) and many horizontal connecting reinforcements (3), and build shrinkage joint interface concrete (12), " M " type rubber seal tape (22) that build-in is installed is set between two deformed steels;
Step 2, by high-pressure pump in valve cock (224) connection on rubber seal tape (22), and make to be filled with specified air pressure in rubber seal tape (22) by high-pressure pump;
Step 3, after finding rubber seal tape (22) gas leakage, need check valve cock (224) and change valve cock parts inflation again after replacing;
Step 4, still cannot solve gas leakage problem when step 3, the gas in emptying rubber seal tape (22), between the mounting groove (211) of deformed steel (21) and rubber seal tape (22), pour into sliding agent, and extract rubber seal tape (22) out from a side, check the air leak position on rubber seal tape and repair, again the rubber seal tape (22) after repairing is reloaded in the mounting groove (211) of deformed steel (21), finally rinse sliding agent well and to again inflating in rubber seal tape (22).
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| CN201410288169.1A CN104060530B (en) | 2014-06-25 | 2014-06-25 | Antiseep bridge expanssion joint and using method thereof |
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| CN201410288169.1A CN104060530B (en) | 2014-06-25 | 2014-06-25 | Antiseep bridge expanssion joint and using method thereof |
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| CN105839532A (en) * | 2016-05-30 | 2016-08-10 | 交通运输部公路科学研究所 | Bridge expansion joint |
| CN108035208A (en) * | 2017-12-18 | 2018-05-15 | 中冶南方城市建设工程技术有限公司 | Cement concrete pavement expansion joint (E.J.) construction and its construction method based on air bag with high intensity |
| CN108335445A (en) * | 2018-02-01 | 2018-07-27 | 陈玉玲 | A kind of door body infrared ray security device |
| CN109057058A (en) * | 2018-09-01 | 2018-12-21 | 华迪钢业集团有限公司 | The U-shaped body of stainless steel and its application method for expansion joint |
| CN110904831A (en) * | 2019-12-04 | 2020-03-24 | 王俊华 | Intelligent rapid sealing and reinforcing device for highway bridge expansion joint and use method thereof |
| CN112376414A (en) * | 2020-10-26 | 2021-02-19 | 中国一冶集团有限公司 | Anti-seepage device and anti-seepage method for cast-in-place concrete bridge deck expansion joint |
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| CN108035208A (en) * | 2017-12-18 | 2018-05-15 | 中冶南方城市建设工程技术有限公司 | Cement concrete pavement expansion joint (E.J.) construction and its construction method based on air bag with high intensity |
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| CN109057058B (en) * | 2018-09-01 | 2020-01-24 | 华迪钢业集团有限公司 | Stainless steel U-shaped body for expansion joint and use method thereof |
| CN110904831A (en) * | 2019-12-04 | 2020-03-24 | 王俊华 | Intelligent rapid sealing and reinforcing device for highway bridge expansion joint and use method thereof |
| CN112376414A (en) * | 2020-10-26 | 2021-02-19 | 中国一冶集团有限公司 | Anti-seepage device and anti-seepage method for cast-in-place concrete bridge deck expansion joint |
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