CN106836023B - The type concrete arch bridge reinforcement means reduced based on mid-span deflection - Google Patents

The type concrete arch bridge reinforcement means reduced based on mid-span deflection Download PDF

Info

Publication number
CN106836023B
CN106836023B CN201710016940.3A CN201710016940A CN106836023B CN 106836023 B CN106836023 B CN 106836023B CN 201710016940 A CN201710016940 A CN 201710016940A CN 106836023 B CN106836023 B CN 106836023B
Authority
CN
China
Prior art keywords
arch
antiarch
msub
mrow
span
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.)
Active
Application number
CN201710016940.3A
Other languages
Chinese (zh)
Other versions
CN106836023A (en
Inventor
郝天之
陈齐风
朱思蓉
刘世建
于孟生
高建明
王龙林
万杰
刘雪雷
罗月静
李保军
黎力韬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Jiaoke Group Co Ltd
Original Assignee
Guangxi Transportation Research and Consulting Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Transportation Research and Consulting Co Ltd filed Critical Guangxi Transportation Research and Consulting Co Ltd
Priority to CN201710016940.3A priority Critical patent/CN106836023B/en
Publication of CN106836023A publication Critical patent/CN106836023A/en
Application granted granted Critical
Publication of CN106836023B publication Critical patent/CN106836023B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D4/00—Arch-type bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a kind of type concrete arch bridge reinforcement means reduced based on mid-span deflection, by setting antiarch below type concrete arch bridge main arch ring arch rib, and it is connected between antiarch and arch rib with brace, the arch springing and arch rib of antiarch are linked together by bending resistance built-in fitting and shear amchor bolt again, the stretch-draw prestressing force between the steering block and former arch rib anchor point of antiarch lower edge so that antiarch structure and former arch rib for reinforcing form rigid constraint support system；And mid-span deflection reduces degree and waits that reinforcing arch and 7 parameters of antiarch has close relationship in the rigid constraint support system, by the different variate-values for setting 7 parameters, token state is changed as amount of deflection with reinforcing the ratio of rear arch mid-span deflection using former arch, based on finite element parametric analysis approximating method, 7 parameters above and the relational expression of amount of deflection change token state have been obtained.With the application of the invention, force value in architectural feature can be solved with reference to foregoing relationships, antiarch reinforcing is carried out so as to fulfill optimal case is chosen.

Description

The type concrete arch bridge reinforcement means reduced based on mid-span deflection
Technical field
The invention belongs to Arch Bridges Strengthening technical field, more particularly to a kind of deck type concrete reduced based on mid-span deflection Arch Bridges Strengthening method.
Background technology
Arch bridge is using a kind of extensive and time-honored Bridge Types in highway in China, especially in Guangxi border Interior, even more common, it and blue mountains and green waters set each other off, very grand.But with the aging of material and the increasingly increased volume of traffic, greatly Partial Bridges can not meet operation demand.The dead weight of some concrete arch-type bridges is larger, and main arch ring is primarily subjected to pressure, Chang Huiyin Arch ring crack is caused to increase for pressure-bearing deficiency, the obvious lower flexure strain of span centre occurs in minority, under stability, bearing capacity and comfort Drop；It is time-consuming and laborious if dismantling reconstruction, but at present and without good reinforcement means.
Concrete arch-type bridge is often that increase main arch ring cross-section, adjustment spandrel construction dead load and enhancing are laterally whole with reinforcement means The methods of body, affixing steel plate and fibrous composite, application external prestressing, reinforces.Lot of examples shows that original method is reinforced Have little effect, and the effect that the fine or not degree direct influence of bonding of new and old material is reinforced is runed after bridge strengthening and shortly can There is the problems such as disengaging of the old and new's material, cohesive force declines, treating that the main arch ring mid-span deflection of reinforcement bridge is excessive causes crack etc. Common fault cannot improve well.
The content of the invention
The technical problem to be solved in the present invention is to provide it is a kind of it is easy for construction, simple and reliable, work well based on span centre The type concrete arch bridge reinforcement means that amount of deflection reduces.
In order to solve the above technical problems, the present invention uses following technical scheme：
The type concrete arch bridge reinforcement means reduced based on mid-span deflection, by type concrete arch bridge main arch Enclose and antiarch is set below arch rib, and be connected between antiarch and arch rib with brace, then pass through bending resistance built-in fitting and shear amchor bolt handle The arch springing and arch rib of antiarch link together, the stretch-draw prestressing force between the steering block and former arch rib anchor point of antiarch lower edge, So that the antiarch structure and former arch rib for reinforcing form rigid constraint support system；And the rigid constraint support system meets Relationship below：
In formula：
Wait reinforce arch and antiarch 7 parameters be respectively antiarch and wait reinforce arch equivalent redius than i, wait reinforce encircle meter Calculate across footpath L, wait to reinforce the ratio of rise to span S of arch1, wait reinforce arch arch axis coefficient m1, S is compared in the rise of antiarch and span of arch footpath to be reinforced2、 The arch axis coefficient m of antiarch2, the ratio K in the across footpath of antiarch and span of arch footpath to be reinforcedr；
RfFor antiarch equivalent redius, IX, fIt is used to for the x directions of antiarch Property square, RoriTo wait to reinforce arch equivalent redius, IX, oriTo wait to reinforce arch x directions the moment of inertia；
S1=f1/ L, S2=f2/ L, L calculate across footpath, f to wait to reinforce arch1、f2Respectively antiarch and the rise for treating reinforcing arch, MZMid span moment after being reinforced for antiarch, MZoriFor arch structure mid span moment to be reinforced.
Antiarch span is between the 1/4-1/2 of main span of arch degree.
Wait to reinforce the arch axis coefficient m encircleed1Between 2-8, the arch axis coefficient m of antiarch2Value between 2 and 6.
Wait to reinforce the ratio of rise to span S encircleed1Scope be 3/25-1/5, the rise of antiarch compares S with span of arch footpath to be reinforced2Scope In 0.02-0.06.
Antiarch is with waiting to reinforce value of the equivalent redius than i encircleed in 0.5-1.0.
The sectional area value of brace is 0.75-1.0 times of antiarch sectional area, and brace angle with horizontal plane is 30 ° -60.
For existing Arch Bridges Strengthening there are the problem of, inventor establish it is a kind of based on mid-span deflection reduce deck type mix Solidifying soil Arch Bridges Strengthening method, by setting antiarch below type concrete arch bridge main arch ring arch rib, and in antiarch and arch rib Between be connected with brace, then the arch springing and arch rib of antiarch are linked together by bending resistance built-in fitting and shear amchor bolt, in antiarch Stretch-draw prestressing force between the steering block of lower edge and former arch rib anchor point so that antiarch structure and former arch rib for reinforcing are formed Rigid constraint support system；And mid-span deflection reduces degree and waits to reinforce the 7 of arch and antiarch in the rigid constraint support system A parameter (antiarch and waiting reinforce the equivalent redius of arch than i, wait to reinforce the ratio of rise to span S of arch1, wait reinforce arch arch axis coefficient m1, instead The rise of arch compares S with span of arch footpath to be reinforced2, antiarch arch axis coefficient m2, the ratio K in the across footpath of antiarch and span of arch footpath to be reinforcedr) There is close relationship, by setting the different variate-values of 7 parameters, using ratio conduct of the former arch with reinforcing rear arch mid-span deflection Amount of deflection changes token state, based on finite element parametric analysis approximating method, has obtained 7 parameters above and amount of deflection change token state Relational expression.Therefore, for the arch bridge of different designs parameter, with the application of the invention, architectural feature can be solved with reference to foregoing relationships Interior force value, carries out antiarch reinforcing so as to fulfill optimal case is chosen, can not only increase the overall stiffness for treating reinforcement bridge, and can To effectively reduce the internal force in crucial section, the antiarch structure of reinforcing has good mechanical characteristic.To sum up, present invention construction letter Just, positive effect, calculates simply, accuracy is high, has wide engineering application prospect.
Brief description of the drawings
Fig. 1 is limited element calculation model schematic diagram.
Fig. 2 is mid-span deflection fitting bit map/bitmap.
Fig. 3 is that certain bridge is schemed before reinforcing in the example using the present invention.
Fig. 4 is that certain bridge is schemed after reinforcing in the example using the present invention.
Fig. 5 is that amount of deflection reduces the curve map that percentage changes with parameter equivalent radius ratio i after being reinforced using the present invention.
Fig. 6 is that amount of deflection reduces the curve map that percentage changes with parameter antiarch arch axis coefficient m2 after being reinforced using the present invention.
Fig. 7 is that amount of deflection reduces the curve map that percentage changes with the ratio between parameter across footpath Kr after being reinforced using the present invention.
Fig. 8 is that amount of deflection reduces the curve map that percentage changes with parameter antiarch ratio of rise to span S2 after being reinforced using the present invention.
In figure：1 arch springing, 2 antiarch, 3 former arch ribs, 4 bending resistance built-in fittings, 5 shear amchor bolts, 6 braces, 7 bridge decks, 8 prestressing force, 9 steering blocks, 10 former arch rib prestressed anchor solid points.
Embodiment
First, operation principle
The type concrete arch bridge reinforcement means reduced based on mid-span deflection --- by type concrete arch bridge Antiarch is set below main arch ring arch rib, and is connected between antiarch and arch rib with brace, then passes through bending resistance built-in fitting and shearing resistance anchor Bolt links together the arch springing and arch rib of antiarch, between the steering block and former arch rib anchor point of antiarch lower edge tensioning in advance should The globality of the former arch rib of power increase and antiarch so that antiarch structure and former arch rib for reinforcing form rigid constraint supporter System；So as to effectively resist and share by the amount of deflection of arch rib transmission, while the arrangement rigidity and intensity of arch rib can be increased, Greatly reduce mid-span deflection value.
For this system, intended using the vault amount of deflection after reinforcing and unguyed vault amount of deflection ratio as characterization value Close, by (2700, see Fig. 1, Fig. 2) fittings of mass data, obtain the pass of across the combined deflection Mz of characterization value and known relevant parameter It is formula (as follows), so as to obtain optimal Reinforcing parameter；
In formula：
Wait reinforce arch and antiarch 7 parameters be respectively antiarch and wait reinforce arch equivalent redius than i, wait reinforce encircle meter Calculate across footpath L, wait to reinforce the ratio of rise to span S of arch1, wait reinforce arch arch axis coefficient m1, S is compared in the rise of antiarch and span of arch footpath to be reinforced2、 The arch axis coefficient m of antiarch2, the ratio K in the across footpath of antiarch and span of arch footpath to be reinforcedr；
RfFor antiarch equivalent redius, IX, fIt is used to for the x directions of antiarch Property square, RoriTo wait to reinforce arch equivalent redius, IX, oriTo wait to reinforce arch x directions the moment of inertia；
S1=f1/ L, S2=f2/ L, L calculate across footpath, f to wait to reinforce arch1、f2Respectively antiarch and the rise for treating reinforcing arch, MZMid span moment after being reinforced for antiarch, MZoriFor arch structure mid span moment to be reinforced.
According to above-mentioned relation formula, if the parameter for waiting to reinforce arch is it is known that needs can be obtained by varying antiarch parameter Mid-span deflection reduces desired value.There is the value range of related parameter as follows：
Antiarch span is between the 1/4-1/2 of main span of arch degree.
Wait to reinforce the arch axis coefficient m encircleed1Between 2-8, the arch axis coefficient m of antiarch2Value between 2 and 6.
Wait to reinforce the ratio of rise to span S encircleed1Scope be 3/25-1/5, the rise of antiarch compares S with span of arch footpath to be reinforced2Scope In 0.02-0.06.
Antiarch is with waiting to reinforce value of the equivalent redius than i encircleed in 0.5-1.0.
The sectional area value of brace is 0.75-1.0 times of antiarch sectional area, but brace cross section parameter to arch rib after reinforcing across The effect unobvious that middle moment of flexure reduces, brace angle with horizontal plane are 30 ° -60 °.
Application example
The type concrete arch bridge of certain 68m across footpath, is shown in attached drawing 3, and, material aging is more tight due to the use of the time limit for a long time Weight, it is found that crack occurs in vault, and after the increasingly increase of the volume of traffic, vault amount of deflection is excessive, very big on current comfort influence, so Need to use a kind of reinforcement means, effectively to reduce the amount of deflection at the position of span centre arch rib, so former bridge is reinforced using antiarch Method reinforced, see attached drawing 4, the ratio of mid-span deflection before calculating mid-span deflection after reinforcing and reinforcing.
Former arch bridge is hingless arch bridge, across footpath L=68m, ratio of rise to span S1=1/5, arch axis coefficient m1=3, antiarch reinforces arch with waiting The ratio between equivalent redius i values 0.4, arch axis coefficient m2=4, rise f2=5m, across footpath L2=18m.Parameter is brought into formula：
In formula：It is 0.628 that can obtain the ratio before reinforcing thick mid-span deflection value and reinforcing, i.e. amount of deflection reduces 37.2%.
Thus example can see the remarkable result that the present invention reinforces concrete-bridge, be analyzed by mass data, lead to The method based on antiarch structural strengthening concrete arch-type bridge or steel arch bridge is crossed, may be such that this type concrete arch-type bridge or steel arch bridge span centre Suffered amount of deflection at least reduces by 30%, brings considerable project benefit.
By constantly adjusting the parameter of antiarch, the reduction amount situation for obtaining the former arch bridge mid-span deflection of different schemes correspondence is shown in Table 1- tables 4 and Fig. 5-Fig. 8：
1 main arch ring mid-span deflection of table reduces change of the percentage with antiarch equivalent redius i
2 main arch ring amount of deflection of table reduces percentage with antiarch arch axis coefficient m2Change
3 main arch ring amount of deflection of table reduces change of the percentage with the ratio between across footpath Kr
4 main arch ring amount of deflection of table reduces change of the percentage with S2
To sum up, mid span moment has following rule：
(1) antiarch across footpath waits that more greatly the amount of deflection reduction percentage for reinforcing arch is bigger, but need to consider construction and take into account whole Body stress；
(2) rise of reinforcing antiarch is higher, its consolidation effect is better；
(3) the arch axis coefficient m2 for reinforcing antiarch is smaller on consolidation effect influence；
(4) reinforcing antiarch equivalent redius i indexs are bigger within the specific limits, its consolidation effect is better.
(5) when the arch axis coefficient of former arch is very big, if reinforced using the present invention, mid-span deflection can be effectively reduced Value, the average amplitude of reduction reach more than 30%.

Claims (6)

  1. A kind of 1. type concrete arch bridge reinforcement means reduced based on mid-span deflection, it is characterised in that：By in deck type Antiarch is set below concrete arch-type bridge main arch ring arch rib, and is connected between antiarch and arch rib with brace, then it is pre-buried by bending resistance Part and shear amchor bolt link together the arch springing and arch rib of antiarch, the steering block of antiarch lower edge and former arch rib anchor point it Between stretch-draw prestressing force so that form rigid constraint support system for the antiarch structure reinforced and former arch rib；And the rigidity is about Beam support system meets relationship below：
    <mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>U</mi> <mi>y</mi> </mrow> <mrow> <msub> <mi>Uy</mi> <mrow> <mi>o</mi> <mi>r</mi> <mi>i</mi> </mrow> </msub> </mrow> </mfrac> <mo>)</mo> </mrow> <mo>=</mo> <mo>-</mo> <mn>0.888476</mn> <mo>+</mo> <mn>0.395104</mn> <mi>i</mi> <mo>-</mo> <mn>0.000532</mn> <msub> <mi>S</mi> <mn>1</mn> </msub> <mi>L</mi> <mo>+</mo> <mn>0.003018</mn> <msub> <mi>S</mi> <mn>2</mn> </msub> <mi>L</mi> <mo>-</mo> <mn>1.016843</mn> <msubsup> <mi>m</mi> <mn>1</mn> <mn>2</mn> </msubsup> <mo>+</mo> <mn>0.000041</mn> <msubsup> <mi>m</mi> <mn>2</mn> <mn>2</mn> </msubsup> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <mo>+</mo> <mn>2.210939</mn> <mfrac> <msup> <mrow> <mo>(</mo> <msub> <mi>S</mi> <mn>1</mn> </msub> <mi>L</mi> <mo>)</mo> </mrow> <mrow> <mo>-</mo> <mn>0.602104</mn> </mrow> </msup> <msup> <mrow> <mo>(</mo> <msub> <mi>S</mi> <mn>2</mn> </msub> <mi>L</mi> <mo>)</mo> </mrow> <mn>0.449355</mn> </msup> </mfrac> <mo>+</mo> <mn>1.000813</mn> <mfrac> <msubsup> <mi>m</mi> <mn>1</mn> <mn>2.008818</mn> </msubsup> <msubsup> <mi>m</mi> <mn>2</mn> <mrow> <mo>-</mo> <mn>0.000071</mn> </mrow> </msubsup> </mfrac> <mo>+</mo> <msup> <mi>i</mi> <mrow> <mo>-</mo> <mn>0.357745</mn> </mrow> </msup> <mo>+</mo> <mn>0.483052</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <mo>-</mo> <mn>0.200850</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <mi>i</mi> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <mo>-</mo> <mn>0.0110669</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <msub> <mi>S</mi> <mn>1</mn> </msub> <mi>L</mi> <mo>+</mo> <mn>0.003015</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <msub> <mi>S</mi> <mn>2</mn> </msub> <mi>L</mi> <mo>-</mo> <mn>0.133280</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <msub> <mi>m</mi> <mn>1</mn> </msub> <mo>+</mo> <mn>0.003080</mn> <msub> <mi>K</mi> <mi>R</mi> </msub> <msub> <mi>m</mi> <mn>2</mn> </msub> </mrow> </mtd> </mtr> </mtable> </mfenced>
    In formula：
    Wait reinforce arch and antiarch 7 parameters be respectively antiarch and wait reinforce arch equivalent redius than i, wait reinforce encircle calculating across Footpath L, wait to reinforce the ratio of rise to span S of arch1, wait reinforce arch arch axis coefficient m1, S is compared in the rise of antiarch and span of arch footpath to be reinforced2, antiarch Arch axis coefficient m2, the ratio K in the across footpath of antiarch and span of arch footpath to be reinforcedr；
    RfFor antiarch equivalent redius, IX, fFor the x directions the moment of inertia of antiarch, RoriTo wait to reinforce arch equivalent redius, IX, oriTo wait to reinforce arch x directions the moment of inertia；
    S1=f1/ L, S2=f2/ L, L calculate across footpath, f to wait to reinforce arch1、f2Respectively antiarch and the rise for treating reinforcing arch, MZTo be anti- Mid span moment after arch reinforcing, MZoriFor arch structure mid span moment to be reinforced.
  2. 2. the type concrete arch bridge reinforcement means according to claim 1 reduced based on mid-span deflection, its feature are existed In：
    The antiarch span is between the 1/4-1/2 of main span of arch degree.
  3. 3. the type concrete arch bridge reinforcement means according to claim 1 reduced based on mid-span deflection, its feature are existed In：
    The arch axis coefficient m for waiting to reinforce arch1Between 2-8, the arch axis coefficient m of antiarch2Value between 2 and 6.
  4. 4. the type concrete arch bridge reinforcement means according to claim 1 reduced based on mid-span deflection, its feature are existed In：
    The ratio of rise to span S for waiting to reinforce arch1Scope be 3/25-1/5, the rise of antiarch compares S with span of arch footpath to be reinforced2Scope In 0.02-0.06.
  5. 5. the type concrete arch bridge reinforcement means according to claim 1 reduced based on mid-span deflection, its feature are existed In：
    The antiarch is with waiting to reinforce value of the equivalent redius than i encircleed in 0.5-1.0.
  6. 6. the type concrete arch bridge reinforcement means according to claim 1 reduced based on mid-span deflection, its feature are existed In：
    The sectional area value of the brace is 0.75-1.0 times of antiarch sectional area, and brace angle with horizontal plane is 30 ° -60.
CN201710016940.3A 2017-01-09 2017-01-09 The type concrete arch bridge reinforcement means reduced based on mid-span deflection Active CN106836023B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710016940.3A CN106836023B (en) 2017-01-09 2017-01-09 The type concrete arch bridge reinforcement means reduced based on mid-span deflection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710016940.3A CN106836023B (en) 2017-01-09 2017-01-09 The type concrete arch bridge reinforcement means reduced based on mid-span deflection

Publications (2)

Publication Number Publication Date
CN106836023A CN106836023A (en) 2017-06-13
CN106836023B true CN106836023B (en) 2018-05-08

Family

ID=59118345

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710016940.3A Active CN106836023B (en) 2017-01-09 2017-01-09 The type concrete arch bridge reinforcement means reduced based on mid-span deflection

Country Status (1)

Country Link
CN (1) CN106836023B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108487088B (en) * 2018-02-09 2020-07-31 广西交通科学研究院有限公司 Method for determining reasonable disassembly and assembly process of catenary arch-arch upper building
CN108416116B (en) * 2018-02-09 2021-10-22 广西交通科学研究院有限公司 Method for determining arch crown weight during arch springing enlarged section reinforcing parabolic arch
CN108460197B (en) * 2018-02-09 2021-09-24 广西交通科学研究院有限公司 Arch building disassembly and assembly scheme optimization method based on deformation amount control
CN108570934B (en) * 2018-03-30 2019-07-23 中交路桥北方工程有限公司 Catenary arch rib construction lofting method and system
CN109281257B (en) * 2018-11-02 2020-07-28 中交鹭建有限公司 Reinforced concrete arch bridge and bridge deck reinforcing device
CN109457592B (en) * 2018-12-03 2023-10-27 中铁第四勘察设计院集团有限公司 V-shaped canyon long-span railway concrete arch bridge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3867149B2 (en) * 2005-06-13 2007-01-10 国立大学法人東京工業大学 Steel slab structure of bridge and steel slab reinforcement method
CN102587268B (en) * 2012-04-12 2014-07-30 广西交通科学研究院 Masonry arch bridge using lightweight concrete as arch filler
CN202559224U (en) * 2012-04-12 2012-11-28 广西交通科学研究院 Masonry arch bridge using lightweight concrete as arch upper packing
CN103940561B (en) * 2014-04-21 2017-03-15 广西交通科学研究院 Accurate measurement hoist cable（Bar）The method of arch bridge main arch rib amount of deflection and its device
CN104074139B (en) * 2014-06-18 2016-06-01 广西交通科学研究院 A kind of subregion regulates the method for bricklaying arch bridge arch fill severe

Also Published As

Publication number Publication date
CN106836023A (en) 2017-06-13

Similar Documents

Publication Publication Date Title
CN106836023B (en) The type concrete arch bridge reinforcement means reduced based on mid-span deflection
Shariati et al. Behaviour of C-shaped angle shear connectors under monotonic and fully reversed cyclic loading: An experimental study
CN106677080B (en) Based on the increased half-through steel arch bridge reinforcement means of arch bridge buckling characteristic coefficient
CN106758743B (en) A kind of method for improving steel reinforced concrete and combining more case continuous bridge hogging moment area stress performances
CN103485287B (en) Prestressing applying method in the construction of concrete frame box culvert
CN106677079B (en) The continuous arch bridge reinforcement means reduced based on arch bridge impost horizontal thrust
CN108060634A (en) Duplexing font ultra-high performance concrete-normal concrete composite beam bridge girder construction and its construction method
Binici March 12 and June 6, 2005 Bingol–Karliova earthquakes and the damages caused by the material quality and low workmanship in the recent earthquakes
CN106702913B (en) The antiarch structural strengthening method reduced based on arch bridge mid span moment
CN108166375A (en) Arch bridge in advance
CN101510224A (en) Continuous rigid frame bridge external pre-stress reinforcement design method based on displacement influence line
CN100523407C (en) Inside anchorage zone reinforcing bars construction method of post-stressed concrete structure
CN106836022B (en) The antiarch structural strengthening method reduced based on arch bridge arch springing hogging moment
CN204475179U (en) Bridge construction Cast-in-situ Beam, bent cap, binder concrete attaching prestressed girder support
Branco et al. Composite box girder bridge behavior during construction
CN105648911B (en) Bridge construction Cast-in-situ Beam, bent cap, binder concrete adhesion type prestressed girder support
CN104746416B (en) A kind of RPC(Reactive Powder Concrete)-normal concrete compound cross-section structure
CN207933866U (en) Duplexing font ultra-high performance concrete-normal concrete composite beam bridge girder construction
CN207904737U (en) Arch bridge in advance
Li et al. Comparative Analysis of Flexural Performance of Recycled Concrete Two-way Composite Slab and Ordinary Concrete Two-way Slab
CN117574522B (en) Square column member minimum hoop matching rate calculation method based on steel fibers and high-strength longitudinal ribs
CN219137376U (en) Double-limb thin-wall hollow combined pier
Davidson Stability research into the design of curved steel bridges
Ni et al. Contrastive Analysis on Hinge Joint Reinforcement Measures of Hollow Plate and Deduction Design Parameter
CN209723661U (en) It is a kind of for fixing the tool of Copper water stop

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: No.6, Gaoxin 2nd Road, XiXiangTang District, Nanning City, Guangxi Zhuang Autonomous Region

Patentee after: Guangxi Jiaoke Group Co.,Ltd.

Address before: 530007 No.6, Gaoxin 2nd Road, Gaoxin Road, Nanning, Guangxi Zhuang Autonomous Region

Patentee before: GUANGXI TRANSPORTATION RESEARCH & CONSULTING Co.,Ltd.

CP03 Change of name, title or address