CN101949135B - Transverse anchorage system outside hollow slab bridge body and construction process thereof - Google Patents
Transverse anchorage system outside hollow slab bridge body and construction process thereof Download PDFInfo
- Publication number
- CN101949135B CN101949135B CN2010105029402A CN201010502940A CN101949135B CN 101949135 B CN101949135 B CN 101949135B CN 2010105029402 A CN2010105029402 A CN 2010105029402A CN 201010502940 A CN201010502940 A CN 201010502940A CN 101949135 B CN101949135 B CN 101949135B
- Authority
- CN
- China
- Prior art keywords
- bracket
- prestressed cable
- hollow slab
- slab bridge
- side plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a transverse anchorage system outside a hollow slab bridge body and a construction process thereof. A left side slab of a hollow slab bridge is provided with a left corbel; a right side slab is provided with a right corbel; both the left corbel and the right corbel are provided with sylphon bellows; a prestressed cable penetratively arranged in each sylphon bellows; the left corbel and the right corbel are connected through the prestressed cable; the left end and the right end of the prestressed cable are respectively fixed by a left anchor device and a right anchor device; and the prestressed cable is connected with a middle slab through a flying ring. The transverse anchorage system is characterized in that the side slabs on both sides of the hollow slab bridge are respectively provided with a reinforced concrete corbel; the reinforced concrete corbels are cast together with the side slabs; the reinforced concrete corbels on both sides are connected with each other through the prestressed cable; and both ends of the prestressed cable are fixed to the reinforced concrete corbels by the anchor devices, and thus the structural rigidity and the integrity of the whole anchorage system are improved, the anchorage ends are guaranteed to be free from loosening, and the looseness of the prestressed cable is avoided. The invention solves the problems of easy looseness of a profile steel anchor lining plate, easy generation of fatigue damage, corrosion of a steel plate, and the like in the traditional anchorage system.
Description
Technical field:
The invention belongs to bridge strengthening maintenance construction technical field, be specifically related to external horizontal anchoring system of a kind of hollow slab bridge and construction technology thereof.
Background technology:
Prestressed concrete assembling hollow slab bridge is a kind of main force bridge type of highway in China bridge, is used widely medium and small striding in the highway bridge of footpath.Along with the influence of many unfavorable factors such as the quick growth of volume of transport, vehicle overload, all diseases have appearred in many hollow slab bridges, need in time carry out maintenance and reinforcement.In various reinforcement means, the external prestressing strengthening method is a kind of effective method.This method is through improve the supporting capacity of bridge at bridge tensile region stretch-draw external prestressing tendon; Its basic principle is to make full use of concrete compressive property; Through external prestressing tendon the beam body is applied precompression; Recurvation square so that precompression produces is offset the internal force that the part external load produces, thereby reaches the purpose of improving the structure functional performance and improving its ultimate bearing capacity.
Can the external prestressing strengthening method realize the consolidation effect of expecting, closely related with external prestressed anchoring system.For prestressed concrete assembling hollow slab bridge, at present the anchoring system and the technology of external prestressing strengthening are: in the lateral wall concrete of two side plates in hollow slab bridge both sides, implant crab-bolt → prestressed ground tackle liner plate → along the horizontal stretch-draw external prestressing tendon at the bottom of hollowcore slab of bridge.The prestressed anchor liner plate adopts section steel manufacture usually, vertically is arranged symmetrically in two side plate outsides along hollowcore slab, and is anchored on the side plate concrete side walls through crab-bolt.Though adopt the anchoring system installation and the construction of shaped steel ground tackle liner plate all comparatively easy; But because the rigidity of the relative concrete core unit of rigidity of shaped steel is little a lot; Reinforce that the back occurs easily in the bridge operation that shaped steel ground tackle liner plate is loosening, fatigue failure and corrosion problem, this all will cause the lax of the transverse prestress rope that applies, the transverse prestress degree at the bottom of the reduction plate; Thereby the reinforcing to the assembling hollow slab bridge causes adverse effect, when serious even can cause and reinforce failure.
Summary of the invention:
In sum; In order to overcome the deficiency of prior art problem; The invention provides external horizontal anchoring system of a kind of hollow slab bridge and construction technology thereof, it is that the steel concrete bracket is set respectively on the side plate of hollow slab bridge both sides, and the steel concrete bracket is cast in side plate; The steel concrete bracket of both sides connects through prestressed cable; The prestressed cable two ends are fixed with ground tackle and steel concrete bracket, thereby improve the rigidity of structure and the globality of whole anchoring system, have guaranteed that anchored end can not become flexible; Avoid the lax of prestressed cable, solved easy loosening, the easy problems such as fatigue failure and steel plate corrosion that produce of shaped steel ground tackle liner plate in the former anchoring system.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
The external horizontal anchoring system of a kind of hollow slab bridge, it comprises left side plate, middle plate and right side plate, wherein: described left side plate is provided with left bracket; Right side plate is provided with right bracket, is provided with bellows on left bracket and the right bracket, and prestressed cable is installed in the bellows; Left side bracket is connected through prestressed cable with right bracket; The prestressed cable left end is fixed through left ground tackle and left bracket, and the prestressed cable right-hand member is fixed through right ground tackle and right bracket, and prestressed cable is connected with middle plate through suspension ring.
Technical scheme of the present invention can also be achieved in that the structure of described left bracket and right bracket is identical, and cross sectional shape is " L " type, and left bracket and right bracket are the steel concrete bracket.
Technical scheme of the present invention can also be achieved in that the corresponding prestressed cable of middle plate of described hollow slab bridge is provided with protection tube.
Technical scheme of the present invention can also be achieved in that described prestressed cable is a un-bonded prestressed steel strand, or is finish rolling deformed bar.
Technical scheme of the present invention can also be achieved in that described left ground tackle is arranged on the outside of left bracket, and right ground tackle is arranged on the outside of right ground tackle, and left ground tackle and right ground tackle are strand tapered anchorage or male cone type ground tackle or supporting type ground tackle.
Technical scheme of the present invention can also be achieved in that between described left ground tackle and the left bracket and be provided with left backing plate, be provided with right backing plate between right ground tackle and the right bracket.
The construction technology of the external horizontal anchoring system of a kind of hollow slab bridge may further comprise the steps:
The first step: quantity and the stretching force of confirming prestressed cable
Design parameterss such as the span of the hollow slab bridge of reinforcing as required, bridge deck width confirm whenever to stride the quantity that hollow slab bridge carries out the required prestressed cable of external horizontal anchoring; Whenever stride on the hollow slab bridge; Seven road prestressed cables are set at least; The centre position of whenever striding hollow slab bridge is provided with prestressed cable one; 1/4 and 3/4 position of whenever striding hollow slab bridge is provided with prestressed cable one, and remaining prestressed cable is gradually dredged distribution from the centre position of hollow slab bridge to 1/4 position and 3/4 position of hollow slab bridge, and the design tension stress during prestressed cable stretch-draw is 40% ~ 75% of steel strand normal intensity or a finish rolling deformed bar normal intensity;
Second step: size and the arrangement of reinforcement of confirming bracket
According to the quantity and the tension stress of the determined external transverse prestress rope of the first step, confirm the size and the arrangement of reinforcement of bracket, bracket is shaped as L shaped; Be coated on the outer side plate of the hollow slab bridge outside, top width >=0.3m, bottom width >=0.6m; Thickness >=0.2m; Side is wide >=0.4m, and inner bending resistance, shearing resistance and the local requirement for bearing capacity that produces of bracket when the bracket size should satisfy by prestressed cable stretch-draw, and calculate the inner arrangement of reinforcement of bracket according to the correlation formula of " Code for design of concrete structures " of national Specification;
The 3rd step: bar planting construction
A, setting-out location, according to concrete bracket size and arrangement of reinforcement quantity that the first step is confirmed, reinforcing bar position is confirmed in the side and the bottom surface setting-out of on the left side plate and right side plate respectively;
B, boring, after the positioned, according to the reinforcing bar position of confirming, the side of on the left side plate and right side plate and bottom surface boring respectively, the aperture of boring is than the big 2mm at least of bar diameter, drilling depth >=10 times bar diameter;
C, clear hole after boring finishes, are cleared up the hole of being bored, and break flour in the hole and disintegrating slag are cleaned out, and guarantee no open fire in the hole simultaneously;
D, injecting glue begin at the bottom of the hole, in the hole, inject bar planting glue uniformly, and the injecting glue degree of depth is 80% of a hole depth;
E, bar planting after injecting glue finishes, are rotated reinforcing bar in the patchhole immediately slowly, and the reinforcing bar in the patchhole is wanted dry cleansing, does not have serious corrosion;
F, maintenance, after bar planting finished, before the bar planting adhesive curing, the reinforcing bar of implantation must not disturbance, makes its natural curing;
The 4th step: colligation bracket reinforcing bar and pre-buried bellows
The side of on the left side plate and right side plate and bottom surface bar planting finish, and behind the curing conservation, are planting colligation plain bars on the good reinforcing bar, and the template that the cast bracket is used is set, and bellows is set in template, and pre-buried left backing plate and right backing plate;
The 5th step: fluid concrete
Fluid concrete in the bracket template;
The 6th step: the installation of suspension ring and the installation of prestressed cable and stretch-draw
A, on the bottom surface of the middle plate of pontic, stamp expansion bolt, and suspension ring are installed;
B, protection tube is installed in the suspension ring of plate base plate;
C,Prestressed cable is passed in left bracket, protection tube and right bracket, according to the design stretching force prestressed cable is carried out stretch-draw then, accomplish the construction of the external horizontal anchoring system of hollow slab bridge.
Beneficial effect of the present invention is:
(1) adopts the anchored end load parts of the steel concrete bracket of new cast in two side plate outsides of hollow slab bridge as external transverse prestress; Substituted conventional shaped steel ground tackle liner plate, solved shaped steel ground tackle liner plate and be prone to become flexible, be out of shape the big and easy shortcoming that fatigue failure and corrosion damage take place.
(2) the steel concrete bracket of new cast adopts rebar-planting anchorage technique to link to each other with the side plate of original hollow slab bridge.Rebar-planting anchorage technique is popular in recent years a kind of novel reinforced construction technology; Its principle is that reinforcing bar is implanted in original concrete structure through high-strength structure glue, thereby and fluid concrete reach stressed purpose jointly so that new fluid concrete is connected to integral body with original concrete.Rebar-planting anchorage technique is ripe, calculate accurately, easy construction, reinforcing are reliable, and the concrete bracket that can guarantee new cast closely connects as a whole with the side plate of original hollow slab bridge.
(3) prestressed cable of the present invention can adopt un-bonded prestressed steel strand, also can adopt finish rolling deformed bar, confirms its quantity and section area according to the reinforcing needs, purchases conveniently.Exposed parts overcoat PE sleeve pipe at the bottom of the plate plate can effectively protect prestressed cable that corrosion does not take place in the prestressed cable.
(4) ground tackle of the present invention can adopt various types of finished product ground tackles such as supporting type, clip type, male cone type, technology maturation, and technology is reliable, and can select to buy according to the needs of institute's stabilization works.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of steel concrete bracket of the present invention;
Fig. 3 is the left view of Fig. 2 of the present invention.
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
Embodiment one:
Like Fig. 1, Fig. 2, shown in Figure 3, the external horizontal anchoring system of a kind of hollow slab bridge, it comprises left side plate 2, middle plate 3 and right side plate 4; Left side plate 2 is provided with left bracket 1, and right side plate 4 is provided with right bracket 5, and left bracket 1 and right bracket 5 are the steel concrete bracket; The cross sectional shape of left side bracket 1 and right bracket 5 is " L " type, is provided with bellows 11 on left bracket 1 and the right bracket 5, and prestressed cable 9 is installed in the bellows 11; Left side bracket 1 is connected through prestressed cable 9 with right bracket 5, and prestressed cable 9 is a un-bonded prestressed steel strand, and prestressed cable 9 left ends are fixed through left ground tackle 13 and left bracket 1; Left side ground tackle 13 is arranged on the outside of left bracket 1, and prestressed cable 9 right-hand members are fixed through right ground tackle 6 and right bracket 5, and right ground tackle 6 is arranged on the outside of right ground tackle 6; Left side ground tackle 13 and right ground tackle 6 are the male cone type ground tackle; Prestressed cable 9 is connected with middle plate 3 through suspension ring 8, and the middle plate 3 corresponding prestressed cables 9 of hollow slab bridge are provided with protection tube 10, and protection tube 10 is the PE sleeve pipe.
With to span be the hollow slab bridge of 16m to carry out the external horizontal anchoring of hollow slab bridge be example, may further comprise the steps when specifically constructing:
The first step: quantity and the stretching force of confirming prestressed cable 9
The span of this hollow slab bridge is 16m, whenever strides seven road prestressed cables 9 are set on the hollow slab bridge, and the diameter of prestressed cable 9 is 15.2mm; The centre position of whenever striding hollow slab bridge is provided with prestressed cable 9 one; 1/4 and 3/4 position of whenever striding hollow slab bridge is provided with prestressed cable 9 one, then, and in the span centre both sides; Position apart from span centre 1m respectively is provided with prestressed cable 9 one respectively; In the span centre both sides, the position apart from span centre 2m respectively is provided with prestressed cable 9 one respectively, and the design tension stress during prestressed cable 9 stretch-draw should be 60% of steel strand normal intensity.
Second step: size and the arrangement of reinforcement of confirming bracket
According to the quantity and the tension stress of the determined external transverse prestress rope 9 of the first step, confirm the size and the arrangement of reinforcement of bracket, bracket is shaped as L shaped; Be coated on the outer side plate of the hollow slab bridge outside, top width is 0.3m, and bottom width is 0.6m; Thickness is 0.2m; Side is wide to be 0.4m, inner bending resistance, shearing resistance and the local requirement for bearing capacity that produces of bracket when the bracket size should satisfy by prestressed cable 9 stretching forces, and calculate the inner arrangement of reinforcement of bracket according to the correlation formula of national standard " Code for design of concrete structures ".
The 3rd step: bar planting construction
A, setting-out location, according to concrete bracket size and arrangement of reinforcement quantity that the first step is confirmed, the arrangement of reinforcement diameter is 12mm, reinforcing bar position is confirmed in the side and the bottom surface setting-out of on the left side plate 2 and right side plate 4 respectively.
B, boring; After the positioned, according to the reinforcing bar position of confirming, the side of on the left side plate 2 and right side plate 4 and bottom surface boring respectively; The aperture of boring is that 14mm is than the big 2mm of bar diameter; Drilling depth is 10 times of bar diameters, must guarantee during boring that rig, drill bit are surperficial vertical with side plate, guarantees that the size of aperture and hole depth is accurate.If rig stops suddenly or drill bit when not advancing in the boring procedure, explain that drill bit runs into reinforcing bar, can suitably misplace to avoid side plate inside reinforcing bar.
C, clear hole after boring finishes, are cleared up the hole of being bored, and break flour in the hole and disintegrating slag are cleaned out, and guarantee no open fire in the hole simultaneously.Staple wiping hole wall twice is used in the clear clear hole of Kong Xianyong steel brush then, dips in twice of acetone wiping with the degreasing staple at last; Break flour and disintegrating slag in boring are cleaned out fully, and hole wall can be moist behind the clear hole, but must guarantee no open fire; If open fire is arranged, must use drier.Clear Kong Houruo does not carry out bar planting for a long time, uses clean staple the aperture is sealed, and gets into to prevent the dust or the grains of sand.
D, injecting glue begin at the bottom of the hole, in the hole, inject bar planting glue uniformly, and the injecting glue degree of depth is 80% of a hole depth; During injecting glue, must discharge by earlier that the mouth of pipe place of sebific duct is rarer glue, pass into disuse.When adopting manual injecting glue device injecting glue, whenever pull injecting glue device trigger one time, under the injecting glue device slow astern, the air in like this can tap makes the glue in the hole full, even.
E, bar planting after injecting glue finishes, should be carried out bar planting immediately, and the part in the reinforcing bar patchhole will keep dry, and cleaning does not have serious corrosion, during bar planting, reinforcing bar rotated patchhole lentamente at the bottom of, in case bubble appears, glue spills phenomenon.For guaranteeing that glue is evenly distributed, reinforcing bar should have a small amount of glue excessive after inserting, and if any bubble or with bigger Pop, explains that glue is unreal in the hole, again injecting glue.
F, maintenance, after bar planting finished, before the bar planting adhesive curing, the reinforcing bar of implantation must not disturbance, makes its natural curing;
The 4th step: colligation bracket reinforcing bar and pre-buried bellows 11
The side of on the left side plate 2 and right side plate 4 and bottom surface bar planting finish; And behind the curing conservation; Plant colligation plain bars on the good reinforcing bar, and the template that the cast bracket is used is being set, on middle plate 3 bottom surfaces of hollow slab bridge, installing and fixing suspension ring 8; Bellows 11 is set in template, and the left backing plate 12 of pre-buried prestressed cable 9 end anchorages and right backing plate 7;
The 5th step: fluid concrete
Fluid concrete in the bracket template;
The 6th step: the installation and the stretch-draw of the installation of suspension ring 8 and prestressed cable 9
A, on the bottom surface of the middle plate 3 of pontic, stamp expansion bolt, and suspension ring 8 are installed;
B, protection tube 10 is installed in the suspension ring 8 of plate 3 base plates;
C,Prestressed cable 9 is passed in left bracket 1, protection tube 10 and right bracket 5; According to the design stretching force prestressed cable 9 is carried out prestressed stretch-draw then; During prestressed stretch-draw; The left end of prestressed cable 9 is fixed, the right-hand member of prestressed cable 9 is carried out stretch-draw, accomplish the construction of the external horizontal anchoring system of hollow slab bridge.
Embodiment two:
Repeat embodiment one, following difference is arranged, present embodiment is being that to carry out the external horizontal anchoring of hollow slab bridge be example for the hollow slab bridge of 20m to span; Whenever stride seven road prestressed cables 9 are set on the hollow slab bridge, the diameter of prestressed cable 9 is 15.2mm, and the centre position of whenever striding hollow slab bridge is provided with prestressed cable 9 one; 1/4 and 3/4 position of whenever striding hollow slab bridge is provided with prestressed cable 9 one; Then, in the span centre both sides, the position apart from span centre 1m respectively is provided with prestressed cable 9 one respectively; In the span centre both sides, the position apart from span centre 2.5m respectively is provided with prestressed cable one respectively.
Anchoring system provided by the invention is not only applicable to the hollow slab bridge of existing generation disease is carried out external transverse prestress reinforcing, is applicable to the newly-built assembling hollow slab bridge that external transverse prestress is set yet.
Be noted that; The above embodiment is to the explanation of technical scheme of the present invention and unrestricted; Other modification that is equal to replacement or makes of affiliated technical field those of ordinary skill according to prior art; As long as do not exceed the thinking and the scope of technical scheme of the present invention, all should be included within the interest field of the presently claimed invention.
Claims (7)
1. external horizontal anchoring system of hollow slab bridge; It comprises left side plate (2), middle plate (3) and right side plate (4); It is characterized in that: described left side plate (2) is provided with left bracket (1); Right side plate (4) is provided with right bracket (5), is provided with bellows (11) in left bracket (1) and the right bracket (5), and prestressed cable (9) is installed in the bellows (11); Left side bracket (1) is connected through prestressed cable (9) with right bracket (5); Prestressed cable (9) left end is fixing through left ground tackle (13) and left bracket (1), and prestressed cable (9) right-hand member is fixing through right ground tackle (6) and right bracket (5), and prestressed cable (9) is connected with middle plate (3) through suspension ring (8).
2. the external horizontal anchoring system of hollow slab bridge according to claim 1; It is characterized in that: the structure of described left bracket (1) and right bracket (5) is identical; Cross sectional shape is " L " type, and left bracket (1) and right bracket (5) are the steel concrete bracket.
3. the external horizontal anchoring system of hollow slab bridge according to claim 1 is characterized in that: the prestressed cable (9) that the middle plate (3) of described hollow slab bridge is corresponding is provided with protection tube (10).
4. the external horizontal anchoring system of hollow slab bridge according to claim 1 is characterized in that: described prestressed cable (9) is a un-bonded prestressed steel strand, or is finish rolling deformed bar.
5. the external horizontal anchoring system of hollow slab bridge according to claim 1; It is characterized in that: described left ground tackle (13) is arranged on the outside of left bracket (1); Right ground tackle (6) is arranged on the outside of right ground tackle (6), and left ground tackle (13) and right ground tackle (6) are strand tapered anchorage or male cone type ground tackle or supporting type ground tackle.
6. according to claim 1 or the external horizontal anchoring system of 5 described hollow slab bridges; It is characterized in that: be provided with left backing plate (12) between described left ground tackle (13) and the left bracket (1), be provided with right backing plate (7) between right ground tackle (6) and the right bracket (5).
7. the construction technology of the external horizontal anchoring system of hollow slab bridge according to claim 1, it is characterized in that: it may further comprise the steps:
The first step: quantity and the stretching force of confirming prestressed cable (9)
The span of the hollow slab bridge of reinforcing as required, bridge deck width design parameters confirm whenever to stride the quantity that hollow slab bridge carries out the required prestressed cable (9) of external horizontal anchoring; Whenever stride on the hollow slab bridge; Seven road prestressed cables (9) are set at least; The centre position of whenever striding hollow slab bridge is provided with one prestressed cable (9); 1/4 and 3/4 position of whenever striding hollow slab bridge is provided with one prestressed cable (9), and remaining prestressed cable (9) is gradually dredged distribution from the centre position of hollow slab bridge to 1/4 position and 3/4 position of hollow slab bridge, and the design tension stress during prestressed cable (9) stretch-draw is 40% ~ 75% of steel strand normal intensity or a finish rolling deformed bar normal intensity;
Second step: size and the arrangement of reinforcement of confirming bracket
Quantity and tension stress according to the determined external transverse prestress rope of the first step (9); Confirm the size and the arrangement of reinforcement of bracket, bracket is shaped as L shaped, is coated on the outer side plate of the hollow slab bridge outside; Top width >=0.3m; Bottom width >=0.6m, thickness >=0.2m, side is wide >=0.4m; Inner bending resistance, shearing resistance and the local requirement for bearing capacity that produces of bracket when the bracket size should satisfy by prestressed cable (9) stretching force, and calculate the inner arrangement of reinforcement of bracket according to the correlation formula of national standard " Code for design of concrete structures ";
The 3rd step: bar planting construction
A, setting-out location, according to concrete bracket size and arrangement of reinforcement quantity that the first step is confirmed, reinforcing bar position is confirmed in the side and the bottom surface setting-out of on the left side plate (2) and right side plate (4) respectively;
B, boring, after the positioned, according to the reinforcing bar position of confirming, the side of on the left side plate (2) and right side plate (4) and bottom surface boring respectively, the aperture of boring is than the big 2mm at least of bar diameter, drilling depth >=10 times bar diameter;
C, clear hole after boring finishes, are cleared up the hole of being bored, and break flour in the hole and disintegrating slag are cleaned out, and guarantee no open fire in the hole simultaneously;
D, injecting glue begin at the bottom of the hole, in the hole, inject bar planting glue uniformly, and the injecting glue degree of depth is 80% of a hole depth;
E, bar planting after injecting glue finishes, are rotated reinforcing bar in the patchhole immediately slowly, and the reinforcing bar in the patchhole is wanted dry cleansing, does not have serious corrosion;
F, maintenance, after bar planting finished, before the bar planting adhesive curing, the reinforcing bar of implantation must not disturbance, makes its natural curing;
The 4th step: colligation bracket reinforcing bar and pre-buried bellows (11)
The side and the bottom surface bar planting of on the left side plate (2) and right side plate (4) finish; And behind the curing conservation, planting colligation plain bars on the good reinforcing bar, and the template that the cast bracket is used is set; Bellows (11) is set in template, and pre-buried left backing plate (12) and right backing plate (7);
The 5th step: fluid concrete
Fluid concrete in the bracket template;
The 6th step: the installation and the stretch-draw of the installation of suspension ring (8) and prestressed cable (9)
A, on the bottom surface of the middle plate (3) of pontic, stamp expansion bolt, and suspension ring (8) are installed;
B, protection tube (10) is installed in the suspension ring (8) of middle plate (3) base plate;
C,Prestressed cable (9) is passed in left bracket (1), protection tube (10) and right bracket (5), according to the design stretching force prestressed cable (9) is carried out stretch-draw then, accomplish the construction of the external horizontal anchoring system of hollow slab bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105029402A CN101949135B (en) | 2010-10-12 | 2010-10-12 | Transverse anchorage system outside hollow slab bridge body and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105029402A CN101949135B (en) | 2010-10-12 | 2010-10-12 | Transverse anchorage system outside hollow slab bridge body and construction process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101949135A CN101949135A (en) | 2011-01-19 |
| CN101949135B true CN101949135B (en) | 2012-07-25 |
Family
ID=43452752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105029402A Expired - Fee Related CN101949135B (en) | 2010-10-12 | 2010-10-12 | Transverse anchorage system outside hollow slab bridge body and construction process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949135B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518042A (en) * | 2011-12-19 | 2012-06-27 | 衡水橡胶股份有限公司 | Method of constructing transverse connection prestressed tendons of T-shaped simply-supported concrete composite bridge |
| CN102535358A (en) * | 2012-02-29 | 2012-07-04 | 郑州大学 | Construction technology for broadening and reforming rigidity matching system of hollow slab bridge |
| CN102587297A (en) * | 2012-02-29 | 2012-07-18 | 郑州大学 | Widening reforming rigidity matching system of hollow slab bridge |
| CN103276674A (en) * | 2013-06-17 | 2013-09-04 | 山西省交通科学研究院 | Method for reinforcing bridge by external transverse prestressing tendons |
| CN103485281B (en) * | 2013-09-12 | 2016-08-17 | 河南省交通科学技术研究院有限公司 | A kind of construction method of assembled external transverse prestress hollow slab bridge |
| CN105297641B (en) * | 2015-10-29 | 2016-08-24 | 北京中交铁建科技发展有限公司 | Highway T beam diaphragm plate prestressed reinforcement structure and carry out the engineering method reinforced with it |
| JP6896444B2 (en) * | 2017-02-10 | 2021-06-30 | オリエンタル白石株式会社 | Fixing tool replacement method for PC structures |
| CN109518885B (en) * | 2018-11-15 | 2021-03-19 | 东南大学 | Prestressed anchoring device, anchoring system applying prestressed anchoring device and construction method |
| CN110939076B (en) * | 2019-12-25 | 2021-10-29 | 山东交通学院 | Arch bridge reinforcing device and method |
| CN112012484B (en) * | 2020-07-31 | 2022-05-20 | 中国建筑第八工程局有限公司 | Column formwork reinforcing device and reinforcing method thereof |
| CN113387639B (en) * | 2021-05-26 | 2022-05-03 | 浙江中清大建筑产业化有限公司 | Prestressed hollow slab made of hard concrete |
| CN114855617A (en) * | 2022-04-18 | 2022-08-05 | 中交二公局东萌工程有限公司 | External prestress construction method for newly-built variable-cross-section continuous beam bridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870789A (en) * | 1994-11-30 | 1999-02-16 | Carranza-Aubry; Rene | Precast bridges |
| CN2511711Y (en) * | 2001-12-07 | 2002-09-18 | 沈阳铁路局科学技术研究所 | Prestressed lateral strengthened concrete beam |
| JP3810759B2 (en) * | 2003-06-09 | 2006-08-16 | オリエンタル建設株式会社 | Edge widening structure of existing substructure by precast block and its construction method |
| CN2913439Y (en) * | 2006-06-28 | 2007-06-20 | 中铁大桥勘测设计院有限公司 | City double width pre-stressed concrete seamless binding wide bridge |
| CN101298756A (en) * | 2008-06-19 | 2008-11-05 | 大连理工大学 | Technique for widening concrete box girder without increasing foot stall steel component |
| JP4413765B2 (en) * | 2004-12-13 | 2010-02-10 | オリエンタル白石株式会社 | Pre-tension hollow girder horizontal fastening PC steel temporary fixing device and fixing method |
| CN201817779U (en) * | 2010-10-12 | 2011-05-04 | 郑州大学 | External transverse anchoring system for hollow plate bridge body |
-
2010
- 2010-10-12 CN CN2010105029402A patent/CN101949135B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870789A (en) * | 1994-11-30 | 1999-02-16 | Carranza-Aubry; Rene | Precast bridges |
| CN2511711Y (en) * | 2001-12-07 | 2002-09-18 | 沈阳铁路局科学技术研究所 | Prestressed lateral strengthened concrete beam |
| JP3810759B2 (en) * | 2003-06-09 | 2006-08-16 | オリエンタル建設株式会社 | Edge widening structure of existing substructure by precast block and its construction method |
| JP4413765B2 (en) * | 2004-12-13 | 2010-02-10 | オリエンタル白石株式会社 | Pre-tension hollow girder horizontal fastening PC steel temporary fixing device and fixing method |
| CN2913439Y (en) * | 2006-06-28 | 2007-06-20 | 中铁大桥勘测设计院有限公司 | City double width pre-stressed concrete seamless binding wide bridge |
| CN101298756A (en) * | 2008-06-19 | 2008-11-05 | 大连理工大学 | Technique for widening concrete box girder without increasing foot stall steel component |
| CN201817779U (en) * | 2010-10-12 | 2011-05-04 | 郑州大学 | External transverse anchoring system for hollow plate bridge body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101949135A (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949135B (en) | Transverse anchorage system outside hollow slab bridge body and construction process thereof | |
| CN106702910B (en) | A kind of main girder construction technique of the double rope face low-pylon cable-stayed bridges of double tower | |
| CN103469939B (en) | A kind of masonry filler wall and main body flexibly connect earthquake resistant structure and construction method thereof | |
| CN102587296B (en) | Self-balancing external prestressing strengthening method for bridge structure | |
| CN101109227B (en) | Construction method of single-stride large cantilever double-pre-stress concrete steel concrete crossbeam | |
| CN103382704B (en) | Unbonded prestress of box girder or T-shaped girder, and steel-concrete combined reinforcement structure and construction method | |
| CN1978843A (en) | Construction method for reinforcing steel-bar net mortar thin layer | |
| CN104878948B (en) | A kind of reinforcement means of rc-frame-beam hogging moment area | |
| CN108867310A (en) | The short rib T beam bridge of pretensioning prestressed concrete and its construction method | |
| CN104847130B (en) | A kind of ruggedized construction and its construction method of existing structure beam | |
| CN204199189U (en) | A kind of fin-plate type ruggedized construction of masonry arch bridge spandrel construction | |
| CN106382016A (en) | Integral reinforcing type construction process for complex structure of old building | |
| CN104295109B (en) | Do not register one's residence balcony rapid reinforcement structure and construction method thereof in old community | |
| CN105821777A (en) | Prestressed concrete diaphragm for connection of old bridge and new bridge and construction method of prestressed concrete diaphragm | |
| CN105649217A (en) | Profiled steel structure beam column joint for reverse construction of stiffened structure and construction method | |
| CN110565974A (en) | method for transforming existing building structure | |
| CN203113229U (en) | Reinforcing device for T-shaped beam and beam case | |
| CN205636524U (en) | A prestressed concrete cross slab for new and old bridge is connected | |
| CN201817779U (en) | External transverse anchoring system for hollow plate bridge body | |
| CN204782044U (en) | Reinforced structure of existing structure roof beam | |
| CN104594654B (en) | A kind of concrete structure reinforcement scheme generation method | |
| CN106593003A (en) | Method for reinforcing steel pipe column through external-sleeving square steel pipe concrete | |
| CN206016230U (en) | It is based on assembled wall-connecting piece exterior wall scaffold system | |
| CN104675138B (en) | A kind of slab balcony reinforcement means for sound insulation and noise reducing transformation | |
| CN201133089Y (en) | Loading transferring device for roof beam changing to floor joist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20131012 |