CN101892637A - Ring type anchor rod locking method for repairing cracks on abutment side wall of highway bridge abutment - Google Patents
Ring type anchor rod locking method for repairing cracks on abutment side wall of highway bridge abutment Download PDFInfo
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- CN101892637A CN101892637A CN2010102363088A CN201010236308A CN101892637A CN 101892637 A CN101892637 A CN 101892637A CN 2010102363088 A CN2010102363088 A CN 2010102363088A CN 201010236308 A CN201010236308 A CN 201010236308A CN 101892637 A CN101892637 A CN 101892637A
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Abstract
The invention relates to a ring type anchor rod locking method for repairing cracks on abutment side walls of a highway bridge abutment. A ring type anchor rod is arranged in the center of an anchor eye and is composed of a main steel tube, an anchoring nail, an anchor sealing steel plate, a slurry draining pipe and a slurry draining stop gate, wherein the tail end of the main steel tube is connected with slurry delivery tube. When cement slurry is poured, the ring type anchor rod serves as a slurry delivery channel, and the cement slurry flows to the eye bottom directly from the eye port, and then returns from the space between the ring type anchor rod and hole walls; the solidified cement slurry is filled in the anchor eye to bind the ring type anchor rod, the abutment side wall and the abutment filing firmly; and all ring type anchor rods are threw into the abutment along the transverse bridge direction, and under the locking action of the multiple ring type anchor rods, the cracked abutment side wall and the abutment filling form a firmed whole so as to recover the use functions of the abutment as good as the use functions when the bridge is completed. The invention has simple operation method, and the whole construction is performed at one side of the abutment without interruption of bridge deck traffic.
Description
Technical field
The present invention relates to a kind of when repairing the crack of road bridge abutment side wall employed ring type anchor rod locking method.
Background technology
In the side of road bridge U type abutment, making simple distributing bar; At its end face, only establish a small amount of reinforcing bar or do not establish reinforcing bar.Abutment banket and the effect of the lateral pressure that produced of vehicular load under, abutment side wall cracking, the crack is along horizontal by being directed downwards and stretching out of 45, until the surface of abutment side wall.
Each raining, the rainwater hole by the road surface infiltrate at first that abutment bankets and embankment filled soil among, and then slowly flow out along abutment side wall crack.Under the effect of flowing water, the fine grained in banketing at first is rushed out, and meanwhile, this crack constantly enlarges.Along with the expansion in crack, middle particle in banketing and coarse granule also constantly run off, and sink and pavement cracking so just cause the road surface, are positioned at the abutment side wall run-off the straight of top, crack.At the concrete cracking place, the exposed and torsional deformation of distributing bar.Owing to be in dampness for a long time, the exposed reinforcement corrosion at this place is serious, so that rupture.When serious, be positioned at the just landing downwards of abutment side wall on the crack to situation, cause the road surface large tracts of land to be subsided.
In the past, when abutment side wall serious cracking,, all be interruption of bridge deck traffic at first for traffic safety, then abutment is carried out large repairs.Its concrete practice is:
1. remove railing and crash bearer on the abutment side wall, abutment side wall on the crack is smashed to pieces, the concrete of removing fragmentation, the abutment of slump banket and asphalt concrete pavement, cut off residual distributing bar, cut the concrete of crack following abutment side wall section part weathering.
2. the abutment side wall below the crack is implanted into vertical reinforcement, utilizes the distributing bar of the whole abutment side wall of these vertical reinforcement polishings.Steel form is set up in the outside at the new distributing bar of making, and fluid concrete in this steel form restores to the original state whole abutment side wall.
3. work as after the concrete of being poured into a mould reaches design strength, back-filling in layers and tamp the sandstone material in the abutment side wall, road surface pavement basic unit and asphalt concrete pavement are reinstalled crash bearer and railing, and whole abutment is restored to the original state.
Repairing abutment side wall crack in this manner needs more fund, also will interrupt nearly one month bridge deck traffic simultaneously.Along the line at ordinary highway, stop up the traffic that causes some areas stifled; In the city proper, the industrial production and the civic normal life of entire city will be had a strong impact on.
The present invention is exactly at this problem, by a kind of ring type anchor rod locking method of repairing road bridge abutment side wall crack of the meticulous development of the inventor.Under the situation that keeps the bridge floor normal traffic, lay the ring type anchor rod of colony along the horizontal direction of cross-bridges, abutment is banketed and the abutment side wall locks together securely the function of use when making abutment regain it just to be completed.
Summary of the invention
Problem to be solved by this invention just provides a kind of under the situation of interruption of bridge deck traffic not, can be simple and direct and high-quality is repaired the job practices in road bridge abutment side wall crack.
The objective of the invention is to be achieved through the following technical solutions:
A kind of ring type anchor rod locking method of repairing road bridge abutment side wall crack will be carried out successively by following operational sequence: the excavation anchor hole orientation, abutment side wall top layer after abutment Zhi Qiang; Between two adjacent anchor hole orientation, establish box cut; Manufacture ring type anchor rod; In described anchor hole orientation, bore the system anchor hole; In this anchor hole, the ring type anchor rod of being manufactured is installed; The afterbody of this ring type anchor rod of shutoff; In described anchor hole orientation, install and fix steel plate; Tail end at this ring type anchor rod master steel pipe connects feed pipe for mortar; By this feed pipe for mortar grout injection in described anchor hole; In described box cut, lay connecting reinforcement; Concrete perfusion in described anchor hole orientation and box cut; This ring type anchor rod locking method is characterised in that:
Lay by square formation from top to bottom on the top layer of the abutment side wall after abutment Zhi Qiang, described anchor hole orientation; The earth pressue at rest that bankets according to abutment and the stretching resistance of single ring type anchor rod, the horizontal spacing in this anchor hole orientation all can make by 600-900mm with vertical spacing; Mid point line along adjacent two anchor hole orientation is established described box cut; Described anchor hole is squeezed into along the direction across bridge level, and its aperture is positioned at the position, center in described anchor hole orientation; Described ring type anchor rod is made of main steel pipe, anchor studs, sealing off and covering anchorage steel plate, discharge pipe and plasma discharge joint door; The axis of the axis of described main steel pipe and place anchor hole coincides, its top 100mm at the bottom of the hole of this anchor hole, the protruding abutment side wall of its tail end 150mm; On the afterbody of this main steel pipe, it is long that described discharge pipe parallels and paste mutually 270-280mm with it; Described sealing off and covering anchorage steel plate is depressed in the aperture 70-80mm of this anchor hole, and in anchor hole main steel pipe and discharge pipe is tightly waled; In the cavity between this sealing off and covering anchorage steel plate and anchor hole aperture, carry out shutoff with closely knit dry cement mortar; This discharge pipe stretches out abutment side wall 320-330mm, and its port of export 80-100mm height that is upturned is installed with described plasma discharge joint door at its port of export; In described anchor hole orientation, described fixation steel plate fixes by its four jiaos expansion bolt and abutment side wall, by welding main steel pipe and integral body of discharge pipe formation with described ring type anchor rod; Described feed pipe for mortar is connected with the tail end of this ring type anchor rod master steel pipe; By this feed pipe for mortar force feed cement paste in described anchor hole, until this anchor hole is filled with; After the cement paste that is poured into reached design strength, the main steel pipe and the discharge pipe that slice off ring type anchor rod in this anchor hole stretched out described fixation steel plate part in addition; In described box cut, make two described connecting reinforcements, to connect the fixation steel plate in adjacent two anchor hole orientation; Adopt the C30 slightly expanded concrete to pour into all anchor hole orientation and box cut.
On the top layer of abutment side wall, cut the outline line of described anchor hole orientation and box cut with electronic cutting blade, its depth of cut is 35mm; In this line of cut, the electricity consumption chiso-mallet removes concrete cover, to form each anchor hole orientation and each section box cut; In the bottom surface of this anchor hole orientation and box cut, the original distributing bar of protection abutment side wall makes it injury-free; The width of this box cut is 60-70mm, and the plane in this anchor hole orientation is a square, and its length of side is greater than the length of side 1-5mm of described fixation steel plate.
Described anchor hole is squeezed into along the direction across bridge level, its aperture is positioned at the position, center in described anchor hole orientation, its length equals banket top margin to the distance of the outward flange of abutment side wall of the plane of fracture of abutment and adds 3700-4700mm, and its bore is 75-90mm, and its degree of skewness of boring system is not more than 0.5 degree; At the position of passing the abutment side wall, this anchor hole water bores and makes, and is not damaged with protection abutment side wall; Passing the position that abutment bankets, this anchor hole is made with rotary drilling or hidden hole drilling, to accelerate the speed of punching.
The main steel pipe external diameter of described ring type anchor rod is that 40-50mm, wall thickness are the steel pipe manufacturing of 3-4mm, and the length that its length equals anchor hole adds 50mm; Its external diameter of the discharge pipe of this ring type anchor rod is 17-20mm, and wall thickness is 2mm, long 450mm; On the afterbody of main steel pipe, it is long that this discharge pipe parallels and paste mutually 270-280mm with it; The sealing off and covering anchorage steel plate of this ring type anchor rod is a circular steel plate that 3mm is thick, and its diameter is less than the bore 1.0mm of described anchor hole; At the position, center on this sealing off and covering anchorage steel plate plane a main steel pipe hole is arranged, a tangent with it plasma discharge pore is arranged on this main steel pipe hole; Described main steel pipe and discharge pipe are inserted respectively in the main steel pipe hole and plasma discharge pore of this sealing off and covering anchorage steel plate, and these three members form an integral body by welding; The tail end of this sealing off and covering anchorage steel plate and this main steel pipe is at a distance of 255-265mm.
The anchor studs diameter of described ring type anchor rod is that the reinforcing bar of 8mm is tailored and formed long 70-80mm; Along this ring type anchor rod master steel pipe vertically, every 800-1000mm individual such anchor studs of welding 3-5 with it all, round the side of this main steel pipe, this 3-5 anchor studs evenly distributes along hoop with paralleling.
Described feed pipe for mortar is made up of a defeated slurry steel pipe and a defeated slurry joint door, the long 300-350mm of defeated slurry steel pipe, and defeated slurry joint door is installed in the middle part of defeated slurry steel pipe; One end of defeated slurry steel pipe welds mutually with the tail end of described ring type anchor rod master steel pipe, and the other end is connected with the rubber tube of pneumatic mortar machine; Under the effect of pneumatic mortar machine, at the bottom of the hole of described cement paste by this defeated slurry steel pipe and the through described anchor hole of main steel pipe, past return from the annulus between anchor hole hole wall and this main steel pipe then, in the process that cement paste charges into, constantly discharge the air in the anchor hole; At the place, aperture of anchor hole, the cement paste that is returned is stopped that by the sealing off and covering anchorage steel plate of this ring type anchor rod its part is from the discharge pipe ejection of this ring type anchor rod; Close the plasma discharge joint door in this discharge pipe exit, when the pressure of pneumatic mortar machine reaches 0.3MPa, close the defeated slurry joint door of feed pipe for mortar again.
Described cement paste and dry cement mortar all adopt No. 425 portland cements to stir, and mix the expansion agent of its consumption 12% and 1.2% water reducing agent in cement in advance; Different is, the water/binder ratio of the slurry that mixes cement is 0.36, and the water/binder ratio that stirs the dry cement mortar only is 0.28; In this external dry cement mortar, also mixed the coarse sand of cement consumption 40%.
Described fixation steel plate is a square steel plate that 5-8mm is thick, and its length of side is 140-160mm; A bolt hole is respectively arranged at the Qi Sijiao place, a main steel pipe hole is arranged, on this main steel pipe hole, have a plasma discharge pore tangent with it at its position, center; In described anchor hole orientation, this fixation steel plate fixes by four road expansion bolts and abutment side wall, and its part of stretching out beyond the abutment side wall of the main steel pipe of described ring type anchor rod and discharge pipe is passed from the main steel pipe hole of this fixation steel plate and plasma discharge pore respectively; Implement the border full weld round main steel pipe hole and plasma discharge pore, make this fixation steel plate and main steel pipe and discharge pipe constitute an integral body.
The degree of depth in described box cut and anchor hole orientation is all 35mm, wherein excavates groove width 60-70mm; In box cut, be that spacing is laid two described connecting reinforcements side by side with 35-45mm, the diameter of this connecting reinforcement is 10-12mm; The two ends of these two connecting reinforcements respectively with an anchor hole orientation in fixation steel plate weld mutually, the length of its each weld bond all is not less than 60mm; The two ends of this connecting reinforcement should be handled in advance, so that each welding position all is depressed in more than the 20mm of abutment side wall surface.
In described anchor hole orientation and box cut, all smear one deck cement gel on the surface of fixation steel plate and connecting reinforcement; Add steel form on abutment side wall surface, to cover whole anchor hole orientation and box cut; Perfusion C30 slightly expanded concrete makes it to be full of all anchor hole orientation and box cut in this steel form, forms the concrete cover that a thickness is not less than 20mm for embedding its inner fixation steel plate and connecting reinforcement; The particle diameter of this its coarse aggregate of C30 slightly expanded concrete is not more than 5mm, and water/binder ratio is between 0.40-0.45; After the concrete that is poured into reaches design strength, with electric grinding machine abutment side wall surface is tied, make it to restore to the original state.
Advantage of the present invention is: in the process in whole reparation abutment side wall crack, all in the construction of abutment side, and job practices is simple, so need not interruption of bridge deck traffic.The ring type anchor rod of being squeezed into can be accurately in place in the abutment side wall after the abutment Zhi Qiang and abutment banket, under the locking of colony's ring type anchor rod, abutment side wall and abutment banket and become one, it can eliminate the harm that abutment side wall cracking is brought fully, the function of use when making abutment recover its completion just.
Description of drawings
Fig. 1 is the horizontal sectional drawing that is distributed in abutment top anchor hole among the present invention.
Fig. 2 is at the anchor hole orientation on abutment side wall top layer and the distribution map of box cut among the present invention.
Fig. 3 is at the ring type anchor rod afterbody on abutment side wall surface and the distribution map of connecting reinforcement among the present invention.
Fig. 4 is the sectional side view of anchor hole among the present invention.
Fig. 5 is ring type anchor rod sectional side view in place in anchor hole among the present invention.
Fig. 6 is the sectional side view that cement paste moves in the main steel pipe of ring type anchor rod among the present invention.
Fig. 7 is the sectional side view that cement paste has just returned at the bottom of the anchor hole hole among the present invention.
Fig. 8 is the sectional side view that cement paste moves between anchor hole hole wall and ring type anchor rod among the present invention.
Fig. 9 is the sectional side view that cement paste is filled with whole anchor hole among the present invention.
Figure 10 is that cement paste is filled with behind the whole anchor hole sectional side view from the discharge pipe ejection among the present invention.
Figure 11 is the sectional side view that is anchored in the ring type anchor rod in the abutment among the present invention.
Figure 12 is the side view of ring type anchor rod among the present invention.
Figure 13 is the plan view of ring type anchor rod sealing off and covering anchorage steel plate among the present invention.
Figure 14 is the cross-sectional drawing at ring type anchor rod sealing off and covering anchorage steel plate place among the present invention.
Figure 15 be among the present invention in the abutment side wall cross-sectional drawing between sealing off and covering anchorage steel plate and the fixation steel plate.
Figure 16 is the plan view of fixation steel plate among the present invention.
Figure 17 is at the cross-sectional drawing of abutment side wall surface layer ring type anchor rod afterbody among the present invention.
Reference numeral
1 anchor hole, 2 ring type anchor rods, 3 cement pastes, 4 abutment Zhi Qiang, 5 abutment side walls, 6 abutments banket, 7 anchor hole orientation, 8 box cuts, 9 feed pipe for mortar, 10 dry cement mortar, 11 fixation steel plates, 12 connecting reinforcements, 2-1 master's steel pipe, 2-2 anchor studs, 2-3 sealing off and covering anchorage steel plate, 2-4 discharge pipe, 2-5 plasma discharge joint door, the defeated slurry of 9-1 steel pipe, the defeated slurry joint of 9-2 door, the 11-1 bolt hole, 11-2 master's steel pipe hole, 11-3 plasma discharge pore.
Below in conjunction with the implementation method of Fig. 1 to Figure 17 detailed description according to reparation road bridge abutment side wall crack proposed by the invention.
The specific embodiment
Adopt the present invention to repair road bridge abutment side wall crack, should carry out step by step according to Fig. 1 to Figure 17.
The top layer of the abutment side wall 5 after abutment pheasant wall 4, with the outline line of electronic cutting blade cutting anchor hole orientation 7 and box cut 8, its depth of cut is 35mm.In this line of cut, the electricity consumption chiso-mallet removes concrete cover, to form the box cut 8 in 7 in each anchor hole orientation 7 and adjacent two anchor hole orientation.In the bottom surface of each anchor hole orientation 7 and each section box cut 8, protection abutment side wall 5 original distributing bars make it injury-free.
Ring type anchor rod 2 is made of main steel pipe 2-1, anchor studs 2-2, sealing off and covering anchorage steel plate 2-3, discharge pipe 2-4 and plasma discharge joint door 2-5.
The external diameter of main steel pipe 2-1 is 40-50mm, and wall thickness is 3-4mm, and the length that its length equals anchor hole 1 adds 50mm.The external diameter of discharge pipe 2-4 is 17-20mm, and wall thickness is 2mm, long 450mm.On the afterbody of main steel pipe 2-1, it is long that discharge pipe 2-4 parallels and paste mutually 270-280mm with it.Sealing off and covering anchorage steel plate 2-3 is a circular steel plate that 3mm is thick, and its diameter is less than the bore 1.0mm of anchor hole 1.At the position, center on its plane a main steel pipe hole is arranged, tangent with it on this main steel pipe hole is a plasma discharge pore.Main steel pipe 2-1 and discharge pipe 2-4 are inserted respectively in the main steel pipe hole and plasma discharge pore of this sealing off and covering anchorage steel plate 2-3, and these three members form an integral body by welding, and the tail end of this sealing off and covering anchorage steel plate and this main steel pipe is at a distance of 255-265mm.
Anchor studs 2-2 diameter is that the reinforcing bar of 8mm is tailored and formed, long 70-80mm, along main steel pipe 2-1 vertically, every 800-1000mm all parallel with it at 3-5 such anchor studs 2-2 of its side welding, round the side of this main steel pipe 2-1, this 3-5 anchor studs evenly distributes along hoop.
In anchor hole 1, the axis of ring type anchor rod 2 main steel pipe 2-1 and the axis of anchor hole 1 coincide, its top 100mm at the bottom of the hole of anchor hole 1, and its tail end stretches out abutment side wall 150mm.The discharge pipe 2-4 of this ring type anchor rod 2 is positioned on the main steel pipe 2-1, and it stretches out abutment side wall 320-330mm, and its port of export 80-100mm height that is upturned is installed with plasma discharge joint door at its port of export.The sealing off and covering anchorage steel plate 2-3 of this ring type anchor rod 2 is depressed in the aperture 70-80mm of anchor hole 1, in the cavity between sealing off and covering anchorage steel plate 2-3 and anchor hole 1 aperture, has been full of closely knit dry cement mortar 10.
Feed pipe for mortar 9 is made up of a defeated slurry steel pipe 9-1 and a defeated slurry joint door 9-2, the long 300-350mm of defeated slurry steel pipe 9-1, and defeated slurry joint door 9-2 is installed in the middle part of this defeated slurry steel pipe 9-1.The end of defeated slurry steel pipe 9-1 welds mutually with the tail end of ring type anchor rod 2 main steel pipe 2-1, and the other end is connected with the rubber tube of pneumatic mortar machine.Under the effect of pneumatic mortar machine, at the bottom of the hole of cement paste 3 by this defeated slurry steel pipe 9-1 and the through anchor hole 1 of main steel pipe 2-1, past return from the annulus between anchor hole hole wall and this main steel pipe 2-1 then, in the process that cement paste charges into, constantly discharge the air in the anchor hole 1.At the place, aperture of anchor hole 1, the cement paste 3 that is returned is stopped that by the sealing off and covering anchorage steel plate 2-3 of ring type anchor rod 2 its part is from the discharge pipe 2-4 ejection of this ring type anchor rod 2.Close the plasma discharge joint door 2-5 in this discharge pipe 2-4 exit, when the pressure of pneumatic mortar machine reaches 0.3MPa, close the defeated slurry joint door 9-2 of feed pipe for mortar 9 again.
The degree of depth in box cut 8 and anchor hole orientation 7 is all 35mm, wherein box cut 8 wide 60-70mm.In box cut 8, be that spacing is laid two connecting reinforcements 12 side by side with 35-45mm, the diameter of this connecting reinforcement 12 is 10-12mm.The two ends of these two connecting reinforcements 12 respectively with an anchor hole orientation 7 in fixation steel plate 11 weld mutually, the length of its each weld bond all is not less than 60mm.The two ends of this connecting reinforcement 12 should be handled in advance, so that each welding position all is depressed in more than the abutment side wall 5 surperficial 20mm.
In anchor hole orientation 7 and box cut 8, all smear one deck cement gel on the surface of fixation steel plate 11 and connecting reinforcement 12.Surface at abutment side wall 5 adds steel form, to cover whole anchor hole orientation 7 and box cut 8.Perfusion C30 slightly expanded concrete makes it to be full of all anchor hole orientation 7 and box cut 8 in this steel form, for embedding its inner fixation steel plate 11 and connecting reinforcement 12 forms the concrete cover that a thickness is not less than 20mm.The coarse aggregate size of this C30 slightly expanded concrete is not more than 5mm, and water/binder ratio is between 0.40-0.45.After the concrete that is poured into reaches design strength, with electric grinding machine the surface of abutment side wall 5 is tied, make it to restore to the original state.
Claims (10)
1. a ring type anchor rod locking method of repairing road bridge abutment side wall crack will be carried out by following operational sequence: successively in abutment Zhi Qiang (4) excavation anchor hole orientation (7), abutment side wall (5) top layer afterwards; Between adjacent two anchor hole orientation (7), establish box cut (8); Manufacture ring type anchor rod (2); In described anchor hole orientation (7), bore system anchor hole (1); The ring type anchor rod of being manufactured (2) is installed in this anchor hole (1); The afterbody of this ring type anchor rod of shutoff (2); In described anchor hole orientation (7), install and fix steel plate (11); Tail end at the main steel pipe of this ring type anchor rod (2) (2-1) connects feed pipe for mortar (9); By this feed pipe for mortar (9) grout injection (3) in described anchor hole (1); In described box cut (8), lay connecting reinforcement (12); Concrete perfusion in described anchor hole orientation (7) and box cut (8); This ring type anchor rod locking method is characterised in that:
On the top layer of abutment Zhi Qiang (4) abutment side wall (5) afterwards, described anchor hole orientation (7) is laid by square formation from top to bottom; According to the banket stretching resistance of earth pressue at rest and single ring type anchor rod (2) of (6) of abutment, the horizontal spacing in this anchor hole orientation (7) all can make by 600-900mm with vertical spacing; Establish described box cut (8) along the mid point line in adjacent two anchor hole orientation (7); Described anchor hole (1) is squeezed into along the direction across bridge level, and its aperture is positioned at the position, center in described anchor hole orientation (7); Described ring type anchor rod (2) is made of main steel pipe (2-1), anchor studs (2-2), sealing off and covering anchorage steel plate (2-3), discharge pipe (2-4) and plasma discharge joint door (2-5); The axis of the axis of described main steel pipe (2-1) and place anchor hole (1) coincides, its top 100mm at the bottom of the hole of this anchor hole (1), the protruding abutment side wall of its tail end (5) 150mm; On the afterbody of this main steel pipe (2-1), it is long that described discharge pipe (2-4) parallels and paste mutually 270-280mm with it; Described sealing off and covering anchorage steel plate (2-3) is depressed in the aperture 70-80mm of this anchor hole (1), and in anchor hole main steel pipe (2-1) and discharge pipe (2-4) is tightly waled; In the cavity between this sealing off and covering anchorage steel plate (2-3) and anchor hole (1) aperture, carry out shutoff with closely knit dry cement mortar (10); This discharge pipe (2-4) stretches out abutment side wall (5) 320-330mm, and its port of export 80-100mm height that is upturned is installed with described plasma discharge joint door (2-5) at its port of export; In described anchor hole orientation (7), described fixation steel plate (11) fixes by its four jiaos expansion bolt and abutment side wall (5), by welding main steel pipe (2-1) and integral body of discharge pipe (2-4) formation with described ring type anchor rod (2); Described feed pipe for mortar (9) is connected with the tail end of the main steel pipe of this ring type anchor rod (2) (2-1); By this feed pipe for mortar (9) force feed cement paste (3) in described anchor hole (1), until this anchor hole (1) is filled with; After the cement paste that is poured into (3) reached design strength, the main steel pipe (2-1) and the discharge pipe (2-4) that slice off ring type anchor rod (2) in this anchor hole (1) stretched out described fixation steel plate (11) part in addition; In described box cut (8), make two described connecting reinforcements (12), to connect the fixation steel plate (11) in adjacent two anchor hole orientation (7); Adopt the C30 slightly expanded concrete to pour into all anchor hole orientation (7) and box cut (8).
2. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: top layer in abutment side wall (5), cut the outline line of described anchor hole orientation (7) and box cut (10) with electronic cutting blade, its depth of cut is 35mm; In this line of cut, the electricity consumption chiso-mallet removes concrete cover, to form each anchor hole orientation (7) and each section box cut (10); In the bottom surface of this anchor hole orientation (7) and box cut (10), the original distributing bar of protection abutment side wall (5) makes it injury-free; The width of this box cut (8) is 60-70mm, and the plane in this anchor hole orientation (7) is a square, and its length of side is greater than the length of side 1-5mm of described fixation steel plate (11).
3. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: described anchor hole (1) is squeezed into along the direction across bridge level, its aperture is positioned at the position, center in described anchor hole orientation (7), its length equals banket top margin to the distance of the outward flange of abutment side wall of the plane of fracture of abutment and adds 3700-4700mm, its bore is 75-90mm, and its degree of skewness of boring system is not more than 0.5 degree; At the position of passing abutment side wall (5), this anchor hole (1) water bores and makes, and is not damaged with protection abutment side wall (5); Passing the banket position of (6) of abutment, this anchor hole (1) is made with rotary drilling or hidden hole drilling, to accelerate the speed of punching.
4. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: the main steel pipe (2-1) of described ring type anchor rod (2) is that 40-50mm, wall thickness are the steel pipe manufacturing of 3-4mm with external diameter, and the length that its length equals anchor hole (1) adds 50mm; Its external diameter of discharge pipe (2-4) of this ring type anchor rod (2) is 17-20mm, and wall thickness is 2mm, long 450mm; On the afterbody of main steel pipe (2-1), it is long that this discharge pipe (2-4) parallels and paste mutually 270-280mm with it; The sealing off and covering anchorage steel plate (2-3) of this ring type anchor rod (2) is a circular steel plate that 3mm is thick, and its diameter is less than the bore 1.0mm of described anchor hole (1); At the position, center on this sealing off and covering anchorage steel plate (2-3) plane a main steel pipe hole is arranged, a tangent with it plasma discharge pore is arranged on this main steel pipe hole; Described main steel pipe (2-1) and discharge pipe (2-4) are inserted respectively in the main steel pipe hole and plasma discharge pore of this sealing off and covering anchorage steel plate (2-3), and these three members form an integral body by welding; The tail end of this sealing off and covering anchorage steel plate (2-3) and this main steel pipe (2-1) is at a distance of 255-265mm.
5. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack is characterized in that: the anchor studs (2-2) of described ring type anchor rod (2) is that the reinforcing bar of 8mm is tailored and formed long 70-80mm with diameter; Along the main steel pipe of this ring type anchor rod (2) (2-1) vertically, all weld 3-5 such anchor studs (2-2) with it every 800-1000mm with paralleling, round the side of this main steel pipe (2-1), this 3-5 anchor studs (2-2) evenly distributes along hoop.
6. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: described feed pipe for mortar (9) is made up of a defeated slurry steel pipe (9-1) and a defeated slurry joint door (9-2), the long 300-350mm of defeated slurry steel pipe (9-1), defeated slurry joint door (9-2) is installed in the middle part of defeated slurry steel pipe (9-1); One end of defeated slurry steel pipe (9-1) welds mutually with the tail end of the main steel pipe of described ring type anchor rod (2) (2-1), and the other end is connected with the rubber tube of pneumatic mortar machine; Under the effect of pneumatic mortar machine, described cement paste (3) passes through defeatedly to starch at the bottom of the hole of steel pipe (9-1) and the through described anchor hole (1) of main steel pipe (2-1), past return from the annulus between anchor hole hole wall and this main steel pipe (2-1) then, in the process that cement paste (3) charges into, constantly discharge the air in the anchor hole (1); At the place, aperture of anchor hole, the cement paste that is returned (3) is stopped that by the sealing off and covering anchorage steel plate (2-3) of this ring type anchor rod (2) its part is from discharge pipe (2-4) ejection of this ring type anchor rod (2); Close the plasma discharge joint door (2-5) in this discharge pipe (2-4) exit, when the pressure of pneumatic mortar machine reaches 0.3MPa, close the defeated slurry joint door (9-2) of feed pipe for mortar (9) again.
7. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: described cement paste (3) and dry cement mortar (10) all adopt No. 425 portland cements to stir, and mix the expansion agent of its consumption 12% and 1.2% water reducing agent in cement in advance; Different is, the water/binder ratio of the slurry (3) that mixes cement is 0.36, and the water/binder ratio that stirs dry cement mortar (10) only is 0.28; In this external dry cement mortar (10), also mixed the coarse sand of cement consumption 40%.
8. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: described fixation steel plate (11) is a square steel plate that 5-8mm is thick, and its length of side is 140-160mm; A bolt hole (11-1) is respectively arranged at the Qi Sijiao place, a main steel pipe hole (11-2) is arranged, on this main steel pipe hole (11-2), have a plasma discharge pore (11-3) tangent with it at its position, center; In described anchor hole orientation (7), this fixation steel plate (11) fixes by four road expansion bolts and abutment side wall (5), and it stretches out the main steel pipe (2-1) of described ring type anchor rod (2) and discharge pipe (2-4) abutment side wall (5) part in addition and pass from the main steel pipe hole (11-2) of this fixation steel plate (11) and plasma discharge pore (11-3) respectively; Implement the border full weld round main steel pipe hole (11-2) and plasma discharge pore (11-3), make this fixation steel plate (11) and main steel pipe (2-1) and discharge pipe (2-5) constitute an integral body.
9. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: the degree of depth of described box cut (8) and anchor hole orientation (7) is all 35mm, the wide 60-70mm of wherein box cut (8); In box cut (8), be that spacing is laid two described connecting reinforcements (12) side by side with 35-45mm, the diameter of this connecting reinforcement (12) is 10-12mm; The two ends of these two connecting reinforcements (12) respectively with an anchor hole orientation (7) in fixation steel plate (11) weld mutually, the length of its each weld bond all is not less than 60mm; The two ends of this connecting reinforcement (12) should be handled in advance, so that each welding position all is depressed in more than the surperficial 20mm of abutment side wall (5).
10. the ring type anchor rod locking method in reparation road bridge abutment side wall according to claim 1 crack, it is characterized in that: in described anchor hole orientation (7) and box cut (8), all smear one deck cement gel on the surface of fixation steel plate (11) and connecting reinforcement (12); Add steel form on abutment side wall (5) surface, to cover whole anchor hole orientation (7) and box cut (8); Perfusion C30 slightly expanded concrete makes it to be full of all anchor hole orientation (7) and box cut (8) in this steel form, forms the concrete cover that a thickness is not less than 20mm for embedding its inner fixation steel plate (11) and connecting reinforcement (12); The particle diameter of this its coarse aggregate of C30 slightly expanded concrete is not more than 5mm, and water/binder ratio is between 0.40-0.45; After the concrete that is poured into reaches design strength, with electric grinding machine abutment side wall (5) surface is tied, make it to restore to the original state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102363088A CN101892637A (en) | 2010-07-26 | 2010-07-26 | Ring type anchor rod locking method for repairing cracks on abutment side wall of highway bridge abutment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102363088A CN101892637A (en) | 2010-07-26 | 2010-07-26 | Ring type anchor rod locking method for repairing cracks on abutment side wall of highway bridge abutment |
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| Publication Number | Publication Date |
|---|---|
| CN101892637A true CN101892637A (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102363088A Pending CN101892637A (en) | 2010-07-26 | 2010-07-26 | Ring type anchor rod locking method for repairing cracks on abutment side wall of highway bridge abutment |
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| CN (1) | CN101892637A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727232A (en) * | 2015-02-26 | 2015-06-24 | 北京公联信达智能交通技术有限责任公司 | Partial remanufacturing method for repairing longitudinal crack of U-shaped abutment |
| CN104746441A (en) * | 2015-02-26 | 2015-07-01 | 北京公联信达智能交通技术有限责任公司 | Thread type anchor rod reinforcing method for repairing longitudinal cracking of U-shaped bridge abutment |
| CN104746440A (en) * | 2015-02-26 | 2015-07-01 | 北京公联信达智能交通技术有限责任公司 | Mudjacking type anchor rod reinforcing method for repairing longitudinal cracking of U-shaped bridge abutment |
| CN108086139A (en) * | 2017-12-20 | 2018-05-29 | 北京公联信达智能交通技术有限责任公司 | The manufacturing technology of armored concrete built-in beam within bridge abutment of highway bridge |
| CN108755455A (en) * | 2018-06-12 | 2018-11-06 | 北京特希达交通勘察设计院有限公司 | The restorative procedure of Collison fence for bridge |
| CN112854009A (en) * | 2021-03-16 | 2021-05-28 | 中冶轨道交通有限公司 | Bridge member |
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2010
- 2010-07-26 CN CN2010102363088A patent/CN101892637A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727232A (en) * | 2015-02-26 | 2015-06-24 | 北京公联信达智能交通技术有限责任公司 | Partial remanufacturing method for repairing longitudinal crack of U-shaped abutment |
| CN104746441A (en) * | 2015-02-26 | 2015-07-01 | 北京公联信达智能交通技术有限责任公司 | Thread type anchor rod reinforcing method for repairing longitudinal cracking of U-shaped bridge abutment |
| CN104746440A (en) * | 2015-02-26 | 2015-07-01 | 北京公联信达智能交通技术有限责任公司 | Mudjacking type anchor rod reinforcing method for repairing longitudinal cracking of U-shaped bridge abutment |
| CN104727232B (en) * | 2015-02-26 | 2016-06-08 | 北京公联信达智能交通技术有限责任公司 | Repair the local facture again of U-shaped abutment longitudinal cracking |
| CN108086139A (en) * | 2017-12-20 | 2018-05-29 | 北京公联信达智能交通技术有限责任公司 | The manufacturing technology of armored concrete built-in beam within bridge abutment of highway bridge |
| CN108755455A (en) * | 2018-06-12 | 2018-11-06 | 北京特希达交通勘察设计院有限公司 | The restorative procedure of Collison fence for bridge |
| CN112854009A (en) * | 2021-03-16 | 2021-05-28 | 中冶轨道交通有限公司 | Bridge member |
| CN112854009B (en) * | 2021-03-16 | 2022-06-17 | 中冶轨道交通有限公司 | Bridge member |
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