CN113005924B - Pier stud reworking and reinforcing construction method - Google Patents
Pier stud reworking and reinforcing construction method Download PDFInfo
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- CN113005924B CN113005924B CN202110254627.XA CN202110254627A CN113005924B CN 113005924 B CN113005924 B CN 113005924B CN 202110254627 A CN202110254627 A CN 202110254627A CN 113005924 B CN113005924 B CN 113005924B
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The application relates to the technical field of pier stud repair, and discloses a pier stud reworking and reinforcing construction method which comprises the steps of jacking, chiseling, steel bar planting, sleeving a glass fiber sleeve, sealing the glass fiber sleeve and filling epoxy grouting material into the glass fiber sleeve, wherein when a damaged part is chiseled, all concrete at the damaged part needs to be chiseled, and the phenomenon that the epoxy grouting material falls off after a long time is reduced; jacking is carried out pier head and bent cap through using the jacking device, can increase the stability that the staff when jacking pier head and bent cap on the one hand, and on the other hand can make things convenient for the staff to jack pier head and bent cap, improves staff's work efficiency.
Description
Technical Field
The application relates to the technical field of pier stud repair, in particular to a pier stud reworking reinforcement construction method.
Background
The pier column is a lower bearing weight used for bearing an upper structure in civil engineering and is sequentially divided into a pier head, a pier body and a pier seat from top to bottom. The cross section of the pier is mostly round, square, curve, parabola and other special-shaped piers. When heavy goods vehicle hit on the pier stud in the traffic accident, the injured usually is the pier shaft, because heavy goods vehicle's load is great, then heavy goods vehicle strikes the pier shaft after, in order to guarantee the structural strength of pier shaft, need heavily do the reinforcement to the pier shaft by the striking.
In the related art, for example, chinese patent publication No. CN105507315A discloses a process for repairing damage to an underwater pier column, which comprises the steps of (1) cleaning the surface of a pier column region to be repaired, and smearing an antirust agent; (2) prefabricating a cylindrical clamp matched with the size of the pier stud to be repaired, sleeving the cylindrical clamp outside the pier stud to be repaired area, and binding the cylindrical clamp by using a fastening belt; (3) fixing the joint of the cylindrical clamp by using a plurality of fastening screws; (4) sealing the bottom of the cylindrical clamp by using a compressible sealing rubber strip; (5) pouring epoxy grouting material into the bottom of the cylindrical clamp from the top, wherein the height of the epoxy grouting material is 12-18 cm; (6) when the step (5) is completed for 6-8 hours, the epoxy grouting material is grouted into the cylindrical fixture from the top at one time until the cylindrical fixture is full, and the grouting is stopped; (7) and sealing the top of the cylindrical clamp by using epoxy sealing glue. The repairing process mainly solves the problems of repairing the damage, corrosion, scouring and other diseases of the pier foundation under the normal water level and the dry water level under the condition of not pumping water, is not limited by the water level environment, does not need large machinery, and has short construction period and no maintenance.
In view of the above-mentioned related technologies, the inventor believes that after the epoxy grouting material is solidified, because the epoxy grouting material is not formed at one time with the original pier stud, the epoxy grouting material is condensed on the outer surface of the original pier stud, and then the epoxy grouting material has a defect that the epoxy grouting material is easy to fall off after a long time.
Disclosure of Invention
In order to alleviate the problem that the epoxy grouting material easily falls off, the application provides a pier stud reworking and reinforcing construction method.
The application provides a pier stud reworking reinforcement construction method adopts following technical scheme:
a pier stud reworking and reinforcing construction method comprises the following steps:
s1: jacking the pier head and the capping beam;
s2: chiseling the damaged part of the pier body to form a repair space after chiseling;
s3: planting bars in the repair space;
s4: sleeving a glass fiber sleeve on the chiseled pier body;
s5: sealing the bottom of the glass fiber sleeve by using a sealing strip;
s6: and filling the glass fiber sleeve with epoxy grouting material.
By adopting the technical scheme, when the pier stud is reworked and repaired, the pier head and the coping are firstly jacked, because the pier head, the pier seat and the pier body are integrally formed, when the pier head is jacked, the pier body and the pier seat are also jacked, the pier body is not influenced by the gravity of the bent cap, then chiseling off the pier body, chiseling off all the concrete at the damaged part of the pier body and forming a repair space, further leaking the reinforcing steel bars in the pier body, planting ribs into the repair space to increase the strength of the pier body, sleeving a glass fiber sleeve on the chiseled part, sealing the bottom of the glass fiber sleeve by using a sealing strip, finally injecting epoxy grouting material into the glass fiber sleeve, thereby make the epoxy grout material solidify the reinforcing bar of newly-implanted with former pier shaft together, and then reduce the problem that the good pier shaft time of restoration has been for a long time the epoxy grout material comes off easily and takes place.
Optionally, in step S1, a jacking device is used to jack the pier head and the capping beam.
Through adopting above-mentioned technical scheme, when carrying out the top to pier nose and bent cap, the staff uses the jacking device to carry out the jacking to pier nose and bent cap, can increase the convenience when the staff carries out the top to pier nose and bent cap on the one hand, and on the other hand can increase the stability that pier shaft and pier nose were risen by the top.
Optionally, the step S3 further includes:
s3.1: drilling holes in pier bodies on two sides of the chiseled part;
s3.2: cleaning dust in the drill hole;
s3.3: injecting an adhesive into the drill hole;
s3.4: vertically inserting a steel bar into the drill hole;
s3.5: and after the adhesive is solidified, transversely and fixedly connecting the newly inserted reinforcing steel bars together.
Through adopting above-mentioned technical scheme, when planting the muscle to former pier stud, set up drilling at first on the upper and lower terminal surface of chiseling the part, the direction of drilling is plumb line direction, then clear up drilling, clear up out the whole dust in the drilling, drilling keeps clean state, then pours into the gluing agent into drilling, in inserting corresponding drilling with the both ends of reinforcing bar, waits for the gluing agent to solidify, the gluing agent is in the same place reinforcing bar and former pier stud fixed connection, and then increases the steadiness of reinforcing bar in the new implantation pier shaft.
Optionally, in the step S4, the glass fiber sleeve is formed by bending a glass fiber plate, a bayonet is arranged on one side of the glass fiber plate, the other side of the glass fiber plate is arranged in the bayonet, and a sealant is poured into the bayonet.
Through adopting above-mentioned technical scheme, when installing glass fiber sleeve on the pier body, wrap up glass fiber plate bending on the pier body earlier, then keep away from one side card of buckle with glass fiber plate and go into the bayonet socket of glass fiber plate, then pour into sealed glue in the bayonet socket, make sealed glue with the both sides fixed connection of glass fiber plate together, thereby when reducing to pouring epoxy grout material into glass fiber sleeve, epoxy grout material takes place through the condition of the clearance outflow between the glass fiber sleeve both sides, and then reach the extravagant condition of epoxy grout material and take place.
Optionally, one side of the bayonet departing from the pier body is provided with a plurality of stainless steel nails, and a plurality of one ends of the stainless steel nails far away from the steel nail head penetrate through the bayonet and penetrate through the other side of the glass fiber sleeve.
Through adopting above-mentioned technical scheme, with the telescopic both sides card of glass fibre back together, insert the stainless steel nail in the bayonet socket, the stainless steel nail passes the telescopic opposite side of glass fibre simultaneously, and then increases the stability when the telescopic both sides of glass fibre link together.
Optionally, in S1 the jacking device include first jacking subassembly and second jacking subassembly, first jacking subassembly is used for jacking the bent cap, second jacking subassembly is used for jacking the pier nose.
Through adopting above-mentioned technical scheme, when jacking mound head and bent cap, install first jacking subassembly earlier, then install second jacking subassembly again, operate first jacking subassembly and second jacking subassembly, first jacking subassembly is carried out the jacking to the bent cap, and second jacking subassembly is carried out the jacking to the mound head, and then reaches the effect that makes things convenient for the staff to carry out the jacking to bent cap and mound head.
Optionally, first jacking subassembly includes many first support columns, two first support beams and a plurality of pneumatic cylinders, and many first support columns divide into two sets of settings, and is a set of first support column sets up in one side of pier stud, another group first support column sets up the opposite side at the pier stud, one first support beam corresponds a set of first support column setting, first support beam conflicts with the top that corresponds many first support columns in a set of, and is a plurality of first pneumatic cylinder divide into two sets of settings, and is a set of first pneumatic cylinder corresponds a first support beam setting, every the cylinder body of pneumatic cylinder all conflicts with first support beam, every the piston rod of pneumatic cylinder all conflicts with the bent cap.
Through adopting above-mentioned technical scheme, when installing first jacking subassembly, install many first support columns earlier, make first support column be in vertical state, then install first bearing beam again, install a first bearing beam to the top that corresponds a set of first support column, then install first pneumatic cylinder again, make first pneumatic cylinder be in vertical state, start first pneumatic cylinder, first pneumatic cylinder drives the bent cap, then make the bent cap move towards the direction of keeping away from ground, increase the convenience that the staff carries out the jacking to the bent cap on the one hand, on the other hand increases the stability that first jacking subassembly carried out the jacking to the bent cap when the rising.
Optionally, the second jacking subassembly includes many second support columns, two second support beams and drive assembly, many the second support column divide into two sets of settings, and is a set of the second support column sets up in one side of pier shaft, another group the second support column sets up at the opposite side of pier shaft, one the second support beam corresponds a set of second support column setting, every the second support beam contradicts with the top that corresponds many second support columns in a set of, drive assembly sets up on two second support beams, drive assembly is used for driving the pier nose.
Through adopting above-mentioned technical scheme, when installing the second jacking subassembly, install many second support columns earlier, make the second support column erect subaerial, then install second bearing beam, install second bearing beam to the top of same group's second support column, install drive assembly at last, operation drive assembly, drive assembly drives the pier nose, then make the pier nose towards the direction motion of keeping away from ground, thereby make the pier shaft not receive the gravity of bent cap, make things convenient for the staff to jack up the pier nose on the one hand, on the other hand increases the stability when the pier nose is jacked.
Optionally, the driving assembly includes two third supporting beams, two fourth supporting beams, two fifth supporting beams and a plurality of second hydraulic cylinders, the third supporting beams, the fourth supporting beams, the second hydraulic cylinders and the fifth supporting beams are sequentially arranged along a direction away from the pier base, the third supporting beams, the two fourth supporting beams and the two fifth supporting beams are uniformly arranged on two sides of the pier body, the plurality of second hydraulic cylinders are divided into two groups, the second hydraulic cylinders are arranged in the same group and correspond to one fourth supporting beam, the second supporting beams, the third supporting beams, the fourth supporting beams and the fifth supporting beams are vertically arranged, the fifth supporting beams are abutted to the bottom of the pier head, and the second hydraulic cylinders are used for jacking the fourth supporting beams.
By adopting the technical scheme, when the driving component is installed, the third supporting beam is installed firstly, so that the third supporting beam is perpendicular to and abutted against the second supporting beam, then the second hydraulic cylinder is installed, the second hydraulic cylinder is in a vertical state, the cylinder body of the second hydraulic cylinder is abutted against the third supporting beam, then the fourth supporting beam is installed, the fourth supporting beam is perpendicular to and abutted against the piston rod of the second hydraulic cylinder, finally the fifth supporting beam is installed, the fifth supporting beam is perpendicular to and abutted against the fourth supporting beam, the second hydraulic cylinder is driven, the second hydraulic cylinder drives the fourth supporting beam, the fifth supporting beam is abutted against the bottom of the pier head, the fifth supporting beam drives the pier head, and the pier head moves towards the direction far away from the ground, so that the stability of the driving component when the pier head is driven is increased, on the other hand reaches the effect that makes things convenient for the staff to carry out the jacking to the pier nose.
Optionally, the jacking device further comprises a positioning assembly, and the positioning assembly is used for positioning the pier body.
Through adopting above-mentioned technical scheme, before cutting the pier shaft, install locating component earlier, make the pier shaft be in stable state under locating component's effect then, reduce the staff when cutting the pier shaft, the condition that the pier shaft produced and rocks takes place.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the first jacking assembly and the second jacking assembly, the first jacking assembly and the second jacking assembly respectively jack the pier head and the capping beam, so that the load of the jacking device during working is reduced, and the stability of the jacking device during working is improved;
2. the first hydraulic cylinders are started when the bent cap is jacked through the arrangement of the plurality of first supporting columns, the first supporting beams and the plurality of first hydraulic cylinders, the first hydraulic cylinders are supported by the first supporting columns, and then the bent cap is driven by the first hydraulic cylinders and moves towards the direction far away from the ground, so that the jacking of the bent cap is realized, and the safety of a worker when chiseling on a pier body is improved;
3. through setting up second support column, second supporting beam and drive assembly, when jacking the pier nose, operation drive assembly, drive assembly drives the pier nose, makes the pier nose move towards the direction of keeping away from ground then, and then realizes the jacking of pier nose, security when increasing the staff and cutting the pier shaft.
Drawings
FIG. 1 is a schematic structural diagram of a bridge pier according to an embodiment of the application;
FIG. 2 is a schematic structural diagram of a jacking device according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a glass fiber sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a first jacking assembly in a jacking apparatus according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a second jacking assembly in the jacking device of the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a positioning assembly in a jacking device according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a first positioning structure in a jacking device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a second positioning structure in a jacking device according to an embodiment of the present application.
Description of reference numerals: 100. heading; 110. a pier base; 200. a pier body; 210. reinforcing steel bars; 211. a reinforcing bar ring; 220. drilling; 300. a capping beam; 400. a glass fiber sleeve; 410. a sealing strip; 420. an auxiliary sheet; 421. a bayonet; 422. stainless steel nails; 500. a jacking device; 510. a fixing assembly; 511. a fixing plate; 512. a connecting assembly; 513. a connecting plate; 514. a first bolt pair; 515. a first bolt; 516. a first nut; 517. a connecting rod; 518. fastening a nut; 520. a first jacking assembly; 521. a first support column; 522. a first support beam; 523. a first hydraulic cylinder; 524. connecting blocks; 530. a second jacking assembly; 531. a second support column; 532. a second support beam; 533. a drive assembly; 534. a third support beam; 535. a fourth support beam; 536. a fifth support beam; 537. a second hydraulic cylinder; 538. a reinforcing bar; 540. a positioning assembly; 541. a first positioning structure; 542. a second positioning structure; 543. a steel plate; 544. a first hoop; 545. a second hoop; 546. a drive rod; 547. a drive block; 548. a first clamping groove; 549. a hand wheel; 550. a second clamping groove; 551. a second bolt pair; 552. a second bolt; 553. a second nut.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses a construction method for reworking and reinforcing a pier stud.
Referring to fig. 1 and 2, a construction method for reworking and reinforcing a pier stud includes the steps of:
s1: processing the road surface of the construction road section to keep the construction road surface in a flat state as much as possible; and then, the jacking device 500 is used for jacking the pier head 100 and the coping 300, so that the pier head 100 and the coping 300 move towards the direction far away from the pier seat 110, the pier head 100 and the coping 300 are jacked, and the pier body 200 does not bear the gravity of the coping 300.
S2: cutting off the damaged part of the pier body 200 to separate the damaged part and the intact part of the pier body 200; when cutting off the damaged part of the pier body 200, attention needs to be paid to protect the reinforcing steel bars 210 inside the pier body 200, and the occurrence of cutting off of the reinforcing steel bars 210 inside the pier body 200 is reduced; then, the concrete at the damaged part of the pier body 200 is completely chiseled off, the chiseled-off part forms a repair space, and the steel bars 210 inside the pier body 200 are exposed in the air.
S3 includes S3.1, S3.2, S3.3, S3.4 and S3.5. S3.1: drilling holes 220 are formed in the upper end face and the lower end face of the repair space of the pier body 200 through electric drills, the drilling holes 220 in each end face are formed in a plurality, and each drilling hole 220 is located in the inner side of the original steel bar 210 in the pier body 200. The opening direction of each bore hole 220 is parallel to the height direction of the pier body 200, the bore holes 220 on the two end faces are correspondingly opened one by one, and the two correspondingly opened bore holes 220 form a pair of bore holes 220. S3.2: after the drilling hole 220 is opened, cleaning the drilling hole 220 by using a brush; then, inflating the drill hole 220 by using an air cylinder, and then extruding the dust in the drill hole 220 by using the air; then, the cotton silk is used for wiping the acetone into the drilled hole 220, so that the effects of no dust, no oil stain and no organic impurities on the hole wall are achieved. S3.3: an adhesive is poured into each bore 220 such that the adhesive fills the bore 220. S3.4: a plurality of steel bars 210 are vertically arranged in the repairing space of the pier body 200, and one steel bar 210 is arranged corresponding to the pair of drill holes 220. One end of the reinforcing bar 210 is inserted into one of the bores 220 and the other end of the reinforcing bar 210 is inserted into the corresponding other bore 220. S3.5: after the reinforcing steel bars 210 and the original pier body 200 are solidified together by the adhesive, the newly implanted reinforcing steel bars 210 and the original reinforcing steel bars 210 in the pier body 200 are derusted by using a wire brush, and then the reinforcing steel bars 210 newly implanted into the pier body 200 are transversely and fixedly connected together by using reinforcing steel bar rings 211, so that the overall strength of the reinforcing steel bars 210 newly implanted into the pier body 200 is further increased.
S4: the chiseling part is sleeved with the glass fiber sleeve 400, the glass fiber sleeve 400 is firstly unfolded to wrap the pier body 200, and then the glass fiber sleeve 400 is temporarily fixed by the fastening belt.
S5: and then the sealing strip 410 is installed at the bottom of the glass fiber sleeve 400, the sealing strip 410 is positioned between the pier body 200 and the glass fiber sleeve 400, and the sealing strip 410 has the effect of eliminating the gap between the glass fiber sleeve 400 and the pier body 200.
S6: and (3) filling epoxy grouting material into the glass fiber sleeve 400, sealing the bottom of the glass fiber sleeve 400, continuously filling the epoxy grouting material to the top of the glass fiber sleeve 400 after the epoxy grouting material is cured, and finally sealing the glass fiber sleeve 400 and the pier body 200 by using sealing glue to ensure that the sealing glue is in an oblique section.
Referring to fig. 2 and 3, in the glass fiber sleeve 400 used in S4, the glass fiber sleeve 400 is formed by bending a glass fiber plate, an auxiliary sheet 420 is fixedly connected to one side of the glass fiber plate, the auxiliary sheet 420 is disposed on a side of the glass fiber plate away from the pier body 200, a bayonet 421 for accommodating the other side of the glass fiber plate is formed between the auxiliary sheet 420 and the glass fiber plate, and the other side of the glass fiber plate is inserted into the bayonet 421. A plurality of stainless steel nails 422 are arranged on the auxiliary sheet 420, and the plurality of stainless steel nails 422 are sequentially arranged along the height direction of the pier body 200. One end of each stainless steel nail 422, which is far away from the steel nail head, vertically penetrates through the two sides of the auxiliary sheet 420 and the glass fiber sleeve 400, after the stainless steel nail 422 is installed, sealant is injected into the bayonet 421, gaps between the glass fiber sleeve 400 and the auxiliary sheet 420 are eliminated, and the situation that epoxy grouting material leaks out through the gaps between the auxiliary sheet 420 and the glass fiber sleeve 400 is reduced. And after the sealant is solidified, taking down the fastening belt.
Referring to fig. 2, the jacking apparatus 500 used in S1 includes a fixing member 510, a first jacking member 520, a second jacking member 530 and a positioning member 540, the fixing member 510 is placed on the ground, and the fixing member 510 fixes the first jacking member 520 and the second jacking member 530. When the jacking device 500 works, the first jacking assembly 520 jacks the bent cap 300, and the second jacking assembly 530 jacks the pier head 100. A positioning assembly 540 is disposed on the second jacking assembly 530, the positioning assembly 540 being used to position the pier body 200.
Referring to fig. 2 and 4, the fixing assembly 510 includes four fixing plates 511, the four fixing plates 511 are disposed on the periphery of the pier body 200, the four fixing plates 511 together form a monolithic slab, and a space for accommodating the pier seat 110 is reserved in the middle of the monolithic slab. The two fixing plates 511 close to each other are fixedly connected together by a connecting assembly 512.
Referring to fig. 2 and 4, the connection assembly 512 includes a connection plate 513 and two sets of first bolt pairs 514, and the two sets of first bolt pairs 514 are respectively located at two ends of the connection plate 513. Each set of first bolt pairs 514 includes a first bolt 515 and a first nut 516, and the first nut 516 is in threaded connection with the first bolt 515. One end of the connecting plate 513 is positioned on top of one of the fixing plates 511, and the other end of the connecting plate 513 is positioned on top of the other fixing plate 511. One end of the first bolt 515, which is far away from the bolt head, vertically penetrates through the fixing plate 511 and the connecting plate 513, after the connecting assembly 512 is installed, the bolt head abuts against the side of the fixing plate 511, which is far away from the connecting plate 513, and the first nut 516 abuts against the side of the connecting plate 513, which is far away from the fixing plate 511.
Referring to fig. 4, the first jacking assembly 520 includes four first support columns 521, two first supporting beams 522 and a plurality of first hydraulic cylinders 523, the four first support columns 521 are equally divided into two groups, and the two groups of first support columns 521 are sequentially arranged along the traveling direction of the vehicle on the cover beam 300. One set of first support columns 521 is disposed on one side of the pier body 200, and another set of first support columns 521 is disposed on the other side of the pier body 200, with two first support columns 521 in the same set being spaced apart. A first support beam 522 is disposed corresponding to a group of the first support columns 521, one end of the first support beam 522 abuts against the top of one of the first support columns 521, and the other end of the first support beam 522 abuts against the top of another one of the first support columns 521. The plurality of first hydraulic cylinders 523 are equally divided into two groups, and one group of first hydraulic cylinders 523 is arranged corresponding to one first supporting beam 522. The plurality of first hydraulic cylinders 523 in the same group are sequentially arranged at intervals along the length direction of the first supporting beam 522, and the cylinder body of the first hydraulic cylinder 523 is abutted against the top of the first supporting beam 522. When the first hydraulic cylinder 523 lifts the cover beam 300, a piston rod of the first hydraulic cylinder 523 abuts against the bottom surface of the cover beam 300 through the connecting block 524.
Referring to fig. 5, the second jacking assembly 530 includes four second supporting columns 531, two second supporting beams 532 and a driving assembly 533, the four second supporting columns 531 are equally divided into two groups, the two groups of second supporting columns 531 are sequentially arranged along the traveling direction of the vehicle on the bent cap 300, one group of second supporting columns 531 is arranged on one side of the pier body 200, and the other group of second supporting columns 531 is arranged on the other side of the pier body 200. The group of second support columns 531 is disposed corresponding to the group of first support columns 521, and the two second support columns 531 in the same group are located between the two first support columns 521 in the corresponding group. One second supporting beam 532 corresponds to one group of second supporting columns 531, one end of the second supporting beam 532 abuts against the top of one second supporting column 531, and the other end of the second supporting beam 532 abuts against the top of the other second supporting column 531. The driving assembly 533 is disposed on the two second support beams 532, and the driving assembly 533 is used for lifting the pier head 100.
Referring to fig. 4, a plurality of connecting rods 517 are disposed on the plurality of fixing plates 511 corresponding to the four first supporting columns 521 and the four second supporting columns 531, and the plurality of connecting rods 517 are disposed perpendicular to the fixing plates 511. One end of each connecting rod 517 is fixedly connected with the fixing plate 511, and the other end of each connecting rod 517 passes through the bottom of the corresponding first supporting column 521 or the corresponding second supporting column 531. Each connecting rod 517 is connected with a fastening nut 518 through a thread, and after the first supporting column 521 and the second supporting column 531 are installed, the fastening nuts 518 are abutted against the side faces of the bottoms of the first supporting column 521 and the second supporting column 531, which are deviated from the fixing plate 511.
Referring to fig. 4 and 5, the first support column 521 and the second support column 531 are connected together by a plurality of fixing plates 511, so that the first support column 521 and the second support column 531 are kept in a stable state, and the situation that the first support column 521 and the second support column 531 shake during operation is reduced.
Referring to fig. 5, the driving assembly 533 includes a third joist 534, a fourth joist 535, a fifth joist 536, and a plurality of second hydraulic cylinders 537, and the third joist 534, the fourth joist 535, and the fifth joist 536 are provided in two. The third support beams 534 are arranged perpendicular to the second support beams 532, one third support beam 534 being arranged on one side of the pier body 200 and the other third support beam 534 being arranged on the other side of the pier body 200. One end of the third support beam 534 abuts against the second support beam 532, and the other end of the third support beam 534 abuts against the other second support beam 532. The second hydraulic cylinders 537 are equally divided into two sets, and one set of the second hydraulic cylinders 537 corresponds to one fourth support beam 535. The cylinder body of the second hydraulic cylinder 537 abuts against the side of the third support beam 534 facing the lid beam 300, and the piston rod of the second hydraulic cylinder 537 abuts against the fourth support beam 535.
Referring to fig. 5, two fourth support beams 535 are each positioned perpendicular to the third support beams 534, one fourth support beam 535 positioned on one side of the pier body 200 and the other fourth support beam 535 positioned on the other side of the pier body 200. Reinforcing rods 538 are fixedly connected to both ends of the fourth supporting beam 535, and the reinforcing rods 538 are arranged perpendicular to the fourth supporting beam 535. The two reinforcement bars 538 and the two fourth support beams 535 together form a frame shape. Two fifth bearing beams 536 are each positioned perpendicular to the fourth bearing beam 535, one fifth bearing beam 536 positioned on one side of the pier body 200 and the other fifth bearing beam 536 positioned on the other side of the pier body 200. One end of the fifth joist 536 abuts one of the fourth joist 535 and the other end of the fifth joist 536 abuts the other of the fourth joist 535. When the second hydraulic cylinder 537 operates, the piston rod of the second hydraulic cylinder 537 drives the fourth supporting beam 535, and the fourth supporting beam 535 drives the fifth supporting beam 536 to move, so that the fifth supporting beam 536 interferes with the bottom of the pier head 100, and at the same time, the fifth supporting beam 536 exerts a force on the pier head 100 in a direction away from the ground.
Referring to fig. 4 and 5, the power sources of the first hydraulic cylinder 523 and the second hydraulic cylinder 537 are both hydraulic pumps, and when the pier head 100 and the cap beam 300 are lifted, the first hydraulic cylinder 523 and the second hydraulic cylinder 537 of different models are selected according to the volumes of the pier head 100 and the cap beam 300, and the first hydraulic cylinder 523 and the second hydraulic cylinder 537 each use an independent hydraulic cylinder pump.
Referring to fig. 6 and 7, the positioning assembly 540 includes a first positioning structure 541 and a second positioning structure 542, the first positioning structure 541 includes a steel plate 543 and a first hoop 544, two ends of the steel plate 543 are respectively disposed corresponding to two second support pillars 531 in the same group, one end of the steel plate 543 is fixedly connected to one second support pillar 531, and the other end of the steel plate 543 is fixedly connected to another second support pillar 531. The middle section of steel plate 543 is curved toward the direction of pier body 200, and the midpoint of steel plate 543 abuts against the circumferential side of pier body 200. The first hoop 544 is held around the pier body 200, the inner wall of the first hoop 544 is abutted against the circumferential side of the pier body 200, and both ends of the first hoop 544 are arranged corresponding to the bending direction of the steel plate 543. The two ends of the first anchor ear 544 are each provided with a second bolt pair 551, the second bolt pair 551 comprises a second bolt 552 and a second nut 553, and the second nut 553 is in threaded connection with the second bolt 552. One end of the second bolt 552, which is far away from the bolt head, vertically passes through the first hoop 544 and the steel plate 543, and after the positioning assembly 540 is installed, the second nut 553 and the bolt head respectively abut against the side of the steel plate 543, which deviates from the first hoop 544, and the side of the first hoop 544, which deviates from the steel plate 543.
Referring to fig. 6 and 8, the second positioning structure 542 includes two second anchor ears 545, two driving rods 546 and four driving blocks 547, and the driving blocks 547 are provided. The two second anchor ears 545 are both perpendicular to the third support beam 534, one second anchor ear 545 is arranged on one side of the pier body 200, and the other second anchor ear 545 is arranged on the other side of the pier body 200. The two ends of each second anchor ear 545 facing the side of the third support beam 534 are both provided with a first clamping groove 548. When second location structure 542 fixes a position pier shaft 200, two second staple bolts 545 are contradicted with the side that pier shaft 200 is relative respectively, and then increase the stability of pier shaft 200 when being under construction pier shaft 200.
Each driving block 547 is provided with a second clamping groove 550 corresponding to one end of the second anchor ear 545, and after the second anchor ear 545 is installed, the first clamping groove 548 is in matched clamping connection with the second clamping groove 550. Two driving blocks 547 are provided corresponding to one third support beam 534, and the driving blocks 547 are provided in the third support beam 534. The driving block 547 is slidably connected to the third support beam 534, and the sliding direction thereof is the length direction of the third support beam 534.
One driving bar 546 is provided corresponding to one third support beam 534, and the driving bar 546 is provided parallel to the third support beam 534. An actuating bar 546 is disposed within the third support beam 534, and the actuating bar 546 is rotatably coupled to the third support beam 534. The driving rods 546 are provided with opposite threads toward the two ends along the middle point of the driving rods 546, and the two driving blocks 547 corresponding to one driving rod 546 are respectively in threaded connection with the two ends of the driving rod 546. Both ends of the driving rod 546 penetrate through the third supporting beam 534, and both ends of the driving rod 546 are coaxially and fixedly connected with hand wheels 549. When the handwheel 549 is rotated, the driving rod 546 is rotated, and the driving rod 546 and the driving block 547 are relatively moved, so that the two driving blocks 547 on the same driving rod 546 are moved towards the direction close to or away from each other, and then the two second hoops 545 are moved towards the direction close to or away from each other, and finally the two second hoops 545 are abutted against the circumferential side of the pier body 200.
The implementation principle of the construction method for reworking and reinforcing the pier stud in the embodiment of the application is as follows: when the pier stud is reinforced again, the pier head 100 and the bent cap 300 are firstly jacked, so that the pier head 100 and the bent cap 300 move towards the direction away from the pier base 110, and the pier body 200 is free from the gravity of the bent cap 300.
When the pier head 100 and the bent cap 300 are jacked, the fixing plates 511 are installed, the four fixing plates 511 are placed on the periphery of the pier body 200, and then the connecting plate 513 and the first bolt pair 514 are installed, so that the four fixing plates 511 are fixedly connected together. Then, the first support column 521 and the second support column 531 are installed, so that the connecting rod 517 passes through the corresponding first support column 521 or the corresponding second support column 531, and the fastening nut 518 is screwed, thereby fixing the first support column 521 and the second support column 531.
The second supporting beam 532 and the third supporting beam 534 are installed, after the third supporting beam 534 is installed, the second anchor ear 545 is clamped on the driving block 547, the driving rod 546 is rotated, the driving rod 546 drives the driving block 547 to move, and then the two second anchor ears 545 are held around the pier body 200.
The second hydraulic cylinder 537, the fourth joist 535 and the fifth joist 536 are then installed. After the fourth joist 535 is installed, two stiffeners 538 are welded to the ends of the fourth joist 535 so that the fourth joist 535 and the stiffeners 538 form a frame.
The first support beam 522 and the first hydraulic cylinder 523 are mounted, and the connecting block 524 is mounted on the piston rod of the first hydraulic cylinder 523. The steel plate 543 and the first hoop 544 are installed, two ends of the steel plate 543 are welded to the two second support columns 531, the first hoop 544 and the steel plate 543 are fixedly connected together through the second bolt pair 551, and meanwhile, the middle point of the steel plate 543 and the inner wall of the first hoop 544 abut against the peripheral side face of the pier body 200.
The first hydraulic cylinder 523 and the second hydraulic cylinder 537 are started, the first hydraulic cylinder 523 drives the connecting block 524, the connecting block 524 jacks the capping beam 300, and the capping beam 300 moves towards the direction far away from the ground, so that the pier body 200 is free from the gravity of the capping beam 300. The second hydraulic cylinder 537 drives the fourth support beam 535, the fourth support beam 535 drives the fifth support beam 536, the fifth support beam 536 drives the pier head 100, and the pier head 100 moves in a direction away from the ground.
Concrete at the damaged portion of the pier body 200 is chiseled, so that the reinforcing bars 210 in the pier body 200 are exposed to the air. And then, new steel bars 210 are implanted into the pier body 200 to enhance the rigidity of the pier body 200. The chiseling-off part of the pier body 200 is sleeved with the glass fiber sleeve 400, and the glass fiber sleeve 400 is fixed on the pier body 200. The sealing strip 410 is used for eliminating a gap between the bottom of the glass fiber sleeve 400 and the pier body 200, epoxy grouting material is filled into the glass fiber sleeve 400, after the epoxy grouting material is solidified, the epoxy grouting material is continuously filled into the glass fiber sleeve 400 until the glass fiber sleeve 400 is filled, and then the sealing glue is used for sealing the top of the glass fiber sleeve 400.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. The construction method for reworking and reinforcing the pier stud is characterized by comprising the following steps:
s1: jacking the pier head (100) and the bent cap (300);
s2: chiseling the damaged part of the pier body (200) to form a repairing space after chiseling;
s3: planting bars into the repair space;
s4: sleeving a glass fiber sleeve (400) on the chiseled pier body;
s5: sealing the bottom of the glass fiber sleeve (400) by using a sealing strip (410);
s6: filling a glass fiber sleeve (400) with epoxy grouting material;
in the step S1, jacking devices (500) are used for jacking the pier heads (100) and the bent cap (300);
the jacking device (500) in the step S1 comprises a first jacking assembly (520) and a second jacking assembly (530), wherein the first jacking assembly (520) is used for jacking the bent cap (300), and the second jacking assembly (530) is used for jacking the pier head (100);
the second jacking assembly (530) comprises a plurality of second supporting columns (531), two second supporting beams (532) and a driving assembly (533), the second supporting columns (531) are divided into two groups, one group of the second supporting columns (531) is arranged on one side of the pier body (200), the other group of the second supporting columns (531) is arranged on the other side of the pier body (200), one second supporting beam (532) is arranged corresponding to one group of the second supporting columns (531), each second supporting beam (532) is abutted against the tops of the second supporting columns (531) in the corresponding group, the driving assembly (533) is arranged on the two second supporting beams (532), and the driving assembly (533) is used for driving the pier head (100);
the driving assembly (533) comprises two third bearing beams (534), two fourth bearing beams (535), two fifth bearing beams (536) and a plurality of second hydraulic cylinders (537), the third bearing beams (534), the fourth bearing beams (535), the second hydraulic cylinders (537) and the fifth bearing beams (536) are sequentially arranged along the direction away from the pier base (110), the two third bearing beams (534), the two fourth bearing beams (535) and the two fifth bearing beams (536) are uniformly arranged on two sides of the pier body (200), the plurality of second hydraulic cylinders (537) are divided into two groups, the second hydraulic cylinders (537) in the same group are arranged corresponding to the fourth bearing beams (535), the second bearing beams (532), the third bearing beams (534), the fourth bearing beams (535) and the fifth bearing beams (536) are vertically arranged in a mutually abutting mode, and the fifth bearing beams (536) are arranged at the bottom of the pier head (100), the second hydraulic cylinder (537) lifts the fourth supporting beam (535);
the jacking device (500) further comprises a positioning component (540) which is arranged on the second jacking component (530) and used for positioning the pier body (200);
the positioning assembly (540) comprises a first positioning structure (541) and a second positioning structure (542), the first positioning structure (541) comprises a steel plate (543) and a first hoop (544), two ends of the steel plate (543) are respectively arranged corresponding to two second supporting columns (531) in the same group, one end of the steel plate (543) is fixedly connected with one second supporting column (531), and the other end of the steel plate (543) is fixedly connected with the other second supporting column (531); the middle section of the steel plate (543) is arranged in a bending mode towards the direction of the pier body (200), and the middle point of the steel plate (543) abuts against the peripheral side face of the pier body (200); the first hoop (544) is held around the pier body (200), the inner wall of the first hoop (544) is abutted against the peripheral side face of the pier body (200), and two ends of the first hoop (544) are arranged corresponding to the bending direction of the steel plate (543); two ends of the first hoop (544) are respectively provided with a second bolt pair (551) fixed with the steel plate (543);
the second positioning structure (542) comprises a second hoop (545), two driving rods (546) and four driving blocks (547), wherein the number of the second hoop (545) and the number of the driving rods (546) are two, and the number of the driving blocks (547) is four; the two second anchor ears (545) are both perpendicular to the third supporting beam (534), one second anchor ear (545) is arranged on one side of the pier body (200), and the other second anchor ear (545) is arranged on the other side of the pier body (200); the side surfaces of the two ends of each second anchor ear (545) facing the third supporting beam (534) are provided with first clamping grooves (548); when the second positioning structure (542) positions the pier body (200), the two second anchor ears (545) are respectively abutted against the opposite side surfaces of the pier body (200);
one end of each driving block (547) corresponding to the second anchor ear (545) is provided with a second clamping groove (550), and after the second anchor ear (545) is installed, the first clamping groove (548) is matched and clamped with the second clamping groove (550); the two driving blocks (547) are arranged corresponding to one third bearing beam (534), and the driving blocks (547) are arranged in the third bearing beam (534); the driving block (547) is connected with the third supporting beam (534) in a sliding manner, and the sliding direction of the driving block is the length direction of the third supporting beam (534);
one driving rod (546) is arranged corresponding to one third supporting beam (534), and the driving rod (546) is arranged in parallel to the third supporting beam (534); the driving rod (546) is arranged inside the third supporting beam (534), and the driving rod (546) is rotatably connected with the third supporting beam (534); opposite threads are arranged on the driving rods (546) towards the two ends along the middle points of the driving rods (546), and two driving blocks (547) corresponding to one driving rod (546) are respectively in threaded connection with the two ends of the driving rod (546); both ends of the driving rod (546) penetrate through the third supporting beam (534), and both ends of the driving rod (546) are coaxially and fixedly connected with hand wheels (549); when rotating hand wheel (549), actuating lever (546) rotate, and relative motion takes place for actuating lever (546) and drive block (547) to make two drive block (547) on the same actuating lever (546) move towards the direction that is close to each other or keeps away from each other, and then make two second staple bolts (545) move towards the direction that is close to each other or keeps away from, finally make two second staple bolts (545) contradict with the week side of pier shaft (200).
2. The pier stud reworking and reinforcing construction method according to claim 1, wherein: step S3 further includes:
s3.1: firstly, drilling holes (220) are formed in pier bodies at two ends of the repair space;
s3.2: cleaning dust in the drill hole (220);
s3.3: injecting an adhesive into the borehole (220);
s3.4: vertically inserting a reinforcing bar (210) into a borehole (220);
s3.5: after the adhesive is solidified, the inserted steel bars (210) are transversely and fixedly connected together by using the steel bar rings (211).
3. The pier stud reworking and reinforcing construction method according to claim 1, wherein: glass fiber sleeve (400) are formed by the glass fiber board is crooked in step S4, one side fixedly connected with auxiliary plate (420) of glass fiber board, auxiliary plate (420) set up glass fiber board deviates from one side of pier shaft (200), auxiliary plate (420) with form between the glass fiber board and hold bayonet socket (421) of glass fiber board opposite side are provided with a plurality of stainless steel nails (422) on auxiliary plate (420), and a plurality of stainless steel nails (422) set gradually along the direction of height of pier shaft (200), and the both sides of auxiliary plate (420) and glass fiber sleeve (400) are passed perpendicularly to the one end that the steel pin head was kept away from in every stainless steel nail (422), pour into sealed glue in bayonet socket (421).
4. The pier stud reworking and reinforcing construction method according to claim 1, wherein: the first jacking assembly (520) comprises a plurality of first supporting columns (521), two first supporting beams (522) and a plurality of first hydraulic cylinders (523), the plurality of first supporting columns (521) are divided into two groups, one group of first supporting columns (521) are arranged on one side of the pier body (200), the other group of first supporting columns (521) are arranged on the other side of the pier body (200), one first supporting beam (522) is arranged corresponding to one group of first supporting columns (521), first bearing beam (522) are contradicted with the top that corresponds many first support columns (521) in a set of, and are a plurality of first pneumatic cylinder (523) divide into two sets of settings, and are a set of first pneumatic cylinder (523) correspond a first bearing beam (522) setting, every the cylinder body of first pneumatic cylinder (523) all contradicts with first bearing beam (522), every the piston rod of first pneumatic cylinder (523) all contradicts with bent cap (300).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110254627.XA CN113005924B (en) | 2021-03-09 | 2021-03-09 | Pier stud reworking and reinforcing construction method |
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| CN202110254627.XA CN113005924B (en) | 2021-03-09 | 2021-03-09 | Pier stud reworking and reinforcing construction method |
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| KR100375495B1 (en) * | 2000-10-19 | 2003-03-10 | 금호엔지니어링 (주) | repair method of being injured bridge pier |
| CN102561212A (en) * | 2012-01-19 | 2012-07-11 | 浙江大学 | Method for strengthening vertical crack of single-pillar concrete pier |
| CN203700977U (en) * | 2013-11-12 | 2014-07-09 | 丁西焘 | Spring supporting-jacking reinforcing structure used for improving shear resistance capacity of bridge |
| CN105507315A (en) * | 2015-12-16 | 2016-04-20 | 武汉南方旭域科技工程有限公司 | Damage repair process for underground pier stud |
| CN108265635B (en) * | 2017-12-20 | 2019-04-23 | 中铁广州工程局集团有限公司 | A kind of coastal dock is hurt bridge pier by damage and does not repair reinforcement method under Unloading Condition |
| CN108797395A (en) * | 2018-08-28 | 2018-11-13 | 南京路友道路工程有限公司 | A method of using glass sleeve reinforcement bridge pier column |
| CN109610305A (en) * | 2019-01-18 | 2019-04-12 | 安徽省公路桥梁工程有限公司 | Old pier column combined type reinforcement system and construction method |
| CN111778877B (en) * | 2020-07-07 | 2021-09-28 | 河北宝力工程装备股份有限公司 | Bridge reinforcing device for load transfer |
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