CN107217598B - A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity - Google Patents
A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity Download PDFInfo
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- CN107217598B CN107217598B CN201710431643.5A CN201710431643A CN107217598B CN 107217598 B CN107217598 B CN 107217598B CN 201710431643 A CN201710431643 A CN 201710431643A CN 107217598 B CN107217598 B CN 107217598B
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The present invention relates to a kind of construction methods for improving concrete flexural beam bridge antidumping bearing capacity, construction method are as follows: when (1) being transformed to existing bridge, concrete anti-collision guard bar on the outside of dismantling concrete curved beam bridges curve, and retain the reserved vertical reinforcement of the concrete anti-collision guard bar interior flange plate；(2) the part vertical reinforcement cleared up inside the concrete anti-collision guard bar simultaneously cleans, and binds the reinforcing bar of the concrete bed of steel-guardrail, and the pedestal pre-embedded steel slab and high-strength bolt of location and installation steel-guardrail column；(3) casting concrete forms concrete bed and health reaches design strength；(4) steel-guardrail column and corrugated sheet steel are installed on concrete bed, original concrete anti-collision guard bar is substituted using steel-guardrail, reduce the secondary dead load weight of superstructure girder, the distribution of end reaction is more uniform, the whole center of gravity of superstructure is mobile to the inner side of curve, improves antidumping bearing capacity and safety coefficient when carload effect.
Description
Technical field
The present invention relates to a kind of construction methods for improving concrete flexural beam bridge antidumping bearing capacity, belong to science of bridge building technology
Field.
Background technique
Recently as the fast development of highway in China construction and urban highway traffic, curved beam bridges are widely used in high speed
During the cross-line intercommunication of highway, the bridge approach of Loads of Long-span Bridges and large stereo intersect, wherein most is concrete flexural beam bridge.Camber beam
Coupled action of bending with torsion effect is obvious in bridge stress, the box section for mostly using bending-twisting rigidity big in Practical Project.
Curved beam bridges mainly have following two feature on structure stress due to the influence of curvature: (1) Torsion Coupling of beam body is made
With.Curved Beam Bridge can generate moment of flexure and torque simultaneously under the action of external load, make its section principal tensile stress often than corresponding
Straight beam bridge is much bigger.For Curved Beam Bridge since the additional torque generated under load action acts on, the vertical deflection on the outside of curve is big
Warpage is likely to occur in the straight bridge of same across footpath, and in beam-ends；(2) interior lateral branch seat counter-force distribution is uneven under load action.It is bent
Line beam bridge is made outer beams overload, inboard beams unloading, medial and lateral end reaction is caused often to differ greatly by the influence of torque, when
When mobile load biases, inside support possibly even generates negative reaction, causes " seat empty " phenomenon, if susceptor design is inconsiderate
It then may cause support damage and lead to Bridge Accidents.
Consider that aesthetic considerations, support system usually use intermediate solely column list fulcrum support, join end in curved beam bridges application process
By the way of double support support.With infrastructure construction in china and expanding economy, the volume of traffic is gradually increased, vehicular load
Constantly increase, the serious inside support that can lead to negative reaction occurs and causes seat empty phenomenon, and overweight vehicle unbalance loading traveling is drawn
The Curved Beam Bridge capsizing case risen is increasing.
In order to improve the structural stress state of Curved Beam Bridge and the reaction distribution of system, previous designer, which generallys use, to be set
Pre- eccentric, increase side support the spacing of support is set, or adds the mode of antitorque deformed bar in beam body to handle.However
The problem of toppling due to caused by carload wobbler action belongs to overall collapse scope, and the preventive effect of the above several ways is inadequate
Obviously.
Summary of the invention
In view of the deficiencies in the prior art, technical problem to be solved by the invention is to provide a kind of raising concrete flexural beam bridges
The construction method of antidumping bearing capacity, is not only simple in structure, and convenient and efficient.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of raising concrete flexural beam bridge antidumping is held
Carry the construction method of power, construction method are as follows:
(1) when being transformed to existing bridge, concrete anti-collision guard bar on the outside of dismantling concrete curved beam bridges curve, and protect
The vertical reinforcement for staying the concrete anti-collision guard bar interior flange plate reserved, as the anchor bar for building steel-guardrail；
(2) concrete at dismounting is cleared up, the part vertical reinforcement inside the concrete anti-collision guard bar is leaked out, to vertical steel
Muscle is cleaned, and binds the first reinforcing bar of the concrete bed of steel-guardrail, and the pedestal of location and installation steel-guardrail column is pre-
Bury steel plate and high-strength bolt；
(3) casting concrete forms concrete bed and health reaches design strength；
(4) steel-guardrail column and corrugated sheet steel are installed on concrete bed.
Preferably, it in step (4), after the installation is completed to steel-guardrail, is poured above concrete bed protective
Cement mortar prevents the generation of concrete bed corrosion phenomena.
Preferably, the bridge includes box beam, and the box beam is equipped with concrete anti-collision guard bar, in extra curvature in the inner side of curve
Side is equipped with steel-guardrail.
Preferably, the concrete anti-collision guard bar includes the second steel of the vertical reinforcement anchoring reserved with box beam flange plate
Muscle has poured concrete on second reinforcing bar, and the top location and installation of the concrete anti-collision guard bar has pre-embedded steel slab, described
The inside location and installation of concrete anti-collision guard bar has pre-embedded bolt, and the inside of the concrete anti-collision guard bar is equipped with and pre-embedded bolt
The steel shield being spirally connected, the top of the concrete anti-collision guard bar are equipped with the cast steel bearing support connecting with pre-embedded steel slab, the cast steel
Steel pipe is fixed with along the extending direction of bridge on bearing support.
Preferably, the steel-guardrail includes concrete bed, and the concrete bed includes reserved with box beam flange plate
Vertical reinforcement anchoring the first reinforcing bar, concrete, the top positioning of the concrete bed have been poured on first reinforcing bar
Pedestal pre-embedded steel slab is installed, positioned internal is equipped with high-strength bolt, the top of the concrete bed is equipped with and is mounted on pedestal
Steel-guardrail column on pre-embedded steel slab, the steel-guardrail column have fixedly connected to the inner side corrugated sheet steel.
A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity, construction method are as follows:
(1) for the construction of newly building bridge, when carrying out the reinforcement construction of superstructure box beam, pre-buried steel shield need to be shifted to an earlier date
The concrete bed on column and the anchor bar of concrete anti-collision guard bar；
(2) the second reinforcing bar for binding the concrete anti-collision guard bar of the inner side of curve, binds the concrete bed on the outside of curve
First reinforcing bar；
(3) location and installation pre-embedded steel slab and pre-embedded bolt at the second reinforcing bar of concrete anti-collision guard bar, in concrete bottom
The pedestal pre-embedded steel slab and high-strength bolt of location and installation steel-guardrail column at first reinforcing bar of seat；
(4) formwork erection and the guardrail concrete on the outside of the inner side of curve and curve is gradually poured；
(5) steel shield, cast steel bearing support and the steel pipe of installation inside concrete anti-collision guard bar, installation outside steel-guardrail
Steel-guardrail column and corrugated sheet steel；
(6) deck paving is carried out, the construction of bridge is completed.
Preferably, in step (1), to assembled prefabricated guardrail then according to requiring pre-buried anchor bar and reserved notch.
Preferably, in step (4), the prefabricated guardrail of on-site consolidation and the concrete that reserving hole in prefabricated guardrail is perfused,
Realize the integrated connection of prefabricated guardrail and box beam.
Preferably, the bridge includes box beam, and the box beam is equipped with concrete anti-collision guard bar, in extra curvature in the inner side of curve
Side is equipped with steel-guardrail.
Preferably, the concrete anti-collision guard bar includes the second steel of the vertical reinforcement anchoring reserved with box beam flange plate
Muscle has poured concrete on second reinforcing bar, and the top location and installation of the concrete anti-collision guard bar has pre-embedded steel slab, described
The inside location and installation of concrete anti-collision guard bar has pre-embedded bolt, and the inside of the concrete anti-collision guard bar is equipped with and pre-embedded bolt
The steel shield being spirally connected, the top of the concrete anti-collision guard bar are equipped with the cast steel bearing support connecting with pre-embedded steel slab, the cast steel
Steel pipe is fixed with along the extending direction of bridge on bearing support；The steel-guardrail includes concrete bed, the concrete bottom
Seat includes the first reinforcing bar of the vertical reinforcement anchoring reserved with box beam flange plate, has poured concrete on first reinforcing bar, institute
The top location and installation for stating concrete bed has pedestal pre-embedded steel slab, positioned internal to be equipped with high-strength bolt, the concrete bottom
The top of seat is equipped with the steel-guardrail column being mounted on pedestal pre-embedded steel slab, and the steel-guardrail column has fixedly connected to the inner side wave
Shape steel plate.
Compared with prior art, the invention has the following advantages: the raising concrete flexural beam bridge antidumping bearing capacity
Construction method by adjusting the Guardrail design mode on the outside of curved beam bridges the inner side of curve and curve, substituted using steel-guardrail original
Concrete anti-collision guard bar, reduce the secondary dead load weight of superstructure girder, the distribution of end reaction is more uniform, top
The whole center of gravity of structure is mobile to the inner side of curve, improves antidumping bearing capacity and safety coefficient when carload effect.
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the organigram of the embodiment of the present invention.
Fig. 2 is the organigram of concrete anti-collision guard bar in the embodiment of the present invention.
Fig. 3 is the organigram of steel-guardrail in the embodiment of the present invention
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
Carefully it is described as follows.
As shown in Fig. 1 ~ 3, a kind of construction method improving concrete flexural beam bridge antidumping bearing capacity, construction method are as follows:
(1) when being transformed to existing bridge, concrete anti-collision guard bar on the outside of dismantling concrete curved beam bridges curve, and protect
The vertical reinforcement for staying the concrete anti-collision guard bar interior flange plate reserved, as the anchor bar for building steel-guardrail 2；
(2) concrete at dismounting is cleared up, the part vertical reinforcement inside the concrete anti-collision guard bar is leaked out, to vertical steel
Muscle is cleaned, and the first reinforcing bar of the concrete bed 3 of steel-guardrail, and the pedestal of location and installation steel-guardrail column 4 are bound
Pre-embedded steel slab 5 and high-strength bolt 6；
(3) casting concrete forms concrete bed and health reaches design strength；
(4) steel-guardrail column and corrugated sheet steel 7 are installed on concrete bed.
In embodiments of the present invention, it in step (4), after the installation is completed to steel-guardrail, is poured above concrete bed
Protective cement mortar is built, the generation of concrete bed corrosion phenomena is prevented.
In embodiments of the present invention, the bridge includes box beam 8, and the box beam is protected in the inner side of curve equipped with concrete anticollision
Column 1 is equipped with steel-guardrail on the outside of curve.
In embodiments of the present invention, the concrete anti-collision guard bar includes that the vertical reinforcement reserved with box beam flange plate anchors
The second reinforcing bar, poured concrete on second reinforcing bar, the top location and installation of the concrete anti-collision guard bar has pre-buried
Steel plate 9, the inside location and installation of the concrete anti-collision guard bar have pre-embedded bolt 10, set on the inside of the concrete anti-collision guard bar
There is the steel shield 11 being spirally connected with pre-embedded bolt, the top of the concrete anti-collision guard bar, which is equipped with, passes through steel supporting frame pre-embedded bolt 14
The cast steel bearing support 12 connecting with pre-embedded steel slab is fixed with steel pipe 13 along the extending direction of bridge on the cast steel bearing support.
In embodiments of the present invention, the steel-guardrail includes concrete bed, and the concrete bed includes and box beam
First reinforcing bar of the reserved vertical reinforcement anchoring of flange plate has poured concrete, the concrete bed on first reinforcing bar
Top location and installation have pedestal pre-embedded steel slab, positioned internal that high-strength bolt is installed, the top of the concrete bed is equipped with
The steel-guardrail column being mounted on pedestal pre-embedded steel slab, the steel-guardrail column have fixedly connected to the inner side corrugated sheet steel.
A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity, construction method are as follows:
(1) for the construction of newly building bridge, when carrying out the reinforcement construction of superstructure box beam, pre-buried steel shield need to be shifted to an earlier date
The concrete bed on column and the anchor bar of concrete anti-collision guard bar；
(2) the second reinforcing bar for binding the concrete anti-collision guard bar of the inner side of curve, binds the concrete bed on the outside of curve
First reinforcing bar；
(3) location and installation pre-embedded steel slab and pre-embedded bolt at the second reinforcing bar of concrete anti-collision guard bar, in concrete bottom
The pedestal pre-embedded steel slab and high-strength bolt of location and installation steel-guardrail column at first reinforcing bar of seat；
(4) formwork erection and the guardrail concrete on the outside of the inner side of curve and curve is gradually poured；
(5) steel shield, cast steel bearing support and the steel pipe of installation inside concrete anti-collision guard bar, installation outside steel-guardrail
Steel-guardrail column and corrugated sheet steel；
(6) deck paving is carried out, the construction of bridge is completed.
In an alternative embodiment of the invention, in step (1), to assembled prefabricated guardrail then according to requiring pre-buried anchoring steel
Muscle and reserved notch.
In an alternative embodiment of the invention, in step (4), the prefabricated guardrail of on-site consolidation is simultaneously perfused in prefabricated guardrail reserved
The concrete of hole realizes the integrated connection of prefabricated guardrail and box beam.
In an alternative embodiment of the invention, the bridge includes box beam, and the box beam is anti-equipped with concrete in the inner side of curve
It hits guardrail, be equipped with steel-guardrail on the outside of curve.
In an alternative embodiment of the invention, the concrete anti-collision guard bar includes the vertical reinforcement reserved with box beam flange plate
Second reinforcing bar of anchoring has poured concrete on second reinforcing bar, and the top location and installation of the concrete anti-collision guard bar has
Pre-embedded steel slab, the inside location and installation of the concrete anti-collision guard bar have pre-embedded bolt, the inside of the concrete anti-collision guard bar
Equipped with the steel shield being spirally connected with pre-embedded bolt, the top of the concrete anti-collision guard bar is equipped with the cast steel branch connecting with pre-embedded steel slab
Bolster is fixed with steel pipe along the extending direction of bridge on the cast steel bearing support；The steel-guardrail includes concrete bed,
The concrete bed includes the first reinforcing bar of the vertical reinforcement anchoring reserved with box beam flange plate, is poured on first reinforcing bar
There is concrete, the top location and installation of the concrete bed has pedestal pre-embedded steel slab, positioned internal to be equipped with high-strength bolt, institute
The top for stating concrete bed is equipped with the steel-guardrail column that is mounted on pedestal pre-embedded steel slab, the steel-guardrail column it is interior
Side is fixed with corrugated sheet steel.
By using concrete anti-collision guard bar in curved beam bridges the inner side of curve, protected on the outside of curve using light-duty semirigid steel
Column mitigates the secondary dead load on the outside of curved beam bridges curve by this method and is self-possessed, and promotes the center of gravity of structure whole inclined to the inner side of curve
It moves, improves the whole antidumping bearing capacity of structure, can also improve the distribution of the inner side and outer side end reaction of Curved Beam Bridge, run
It is avoided that the excessive counter-force of generation is poor in the process, improves the stress performance of bridge, improve the service life of support and the peace of structure
Quan Xing is not only suitable for the design of newly building bridge, is also applied for the transformation of existing bridge.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The construction method of the raising concrete flexural beam bridge antidumping bearing capacity of kind form.It is all done according to scope of the present invention patent it is equal
Deng variation and modification, it is all covered by the present invention.
Claims (10)
1. a kind of construction method for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: the construction method are as follows:
(1) when being transformed to existing bridge, concrete anti-collision guard bar on the outside of dismantling concrete curved beam bridges curve, and retaining should
The reserved vertical reinforcement of concrete anti-collision guard bar interior flange plate, as the anchor bar for building steel-guardrail；
(2) clear up dismounting at concrete, leak out the part vertical reinforcement inside the concrete anti-collision guard bar, to vertical reinforcement into
Row cleaning, binds the first reinforcing bar of the concrete bed of steel-guardrail, and the pedestal pre-buried steel of location and installation steel-guardrail column
Plate and high-strength bolt；
(3) casting concrete forms concrete bed and health reaches design strength；
(4) steel-guardrail column and corrugated sheet steel are installed on concrete bed.
2. the construction method according to claim 1 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that:
In step (4), after the installation is completed to steel-guardrail, protective cement mortar is poured above concrete bed, prevents coagulation
The generation of native pedestal corrosion phenomena.
3. the construction method according to claim 1 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: institute
Stating bridge includes box beam, the box beam the inner side of curve be equipped with concrete anti-collision guard bar, on the outside of curve be equipped with steel-guardrail.
4. the construction method according to claim 3 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: institute
The second reinforcing bar that concrete anti-collision guard bar includes the vertical reinforcement anchoring reserved with box beam flange plate is stated, is poured on second reinforcing bar
Built concrete, the top location and installation of the concrete anti-collision guard bar has a pre-embedded steel slab, the concrete anti-collision guard bar it is interior
Side positioning is equipped with pre-embedded bolt, and the inside of the concrete anti-collision guard bar is equipped with the steel shield being spirally connected with pre-embedded bolt, described
The top of concrete anti-collision guard bar is equipped with the cast steel bearing support that connect with pre-embedded steel slab, along bridge on the cast steel bearing support
Extending direction is fixed with steel pipe.
5. the construction method according to claim 3 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: institute
Stating steel-guardrail includes concrete bed, and the concrete bed includes the of the vertical reinforcement anchoring reserved with box beam flange plate
One reinforcing bar, has poured concrete on first reinforcing bar, the top location and installation of the concrete bed have pedestal pre-embedded steel slab,
Positioned internal is equipped with high-strength bolt, and the top of the concrete bed is equipped with the steel-guardrail being mounted on pedestal pre-embedded steel slab
Column, the steel-guardrail column have fixedly connected to the inner side corrugated sheet steel.
6. a kind of construction method for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: the construction method are as follows:
(1) pre-buried steel-guardrail need to be shifted to an earlier date when carrying out the reinforcement construction of superstructure box beam for the construction of newly building bridge
The anchor bar of concrete bed and concrete anti-collision guard bar；
(2) the second reinforcing bar for binding the concrete anti-collision guard bar of the inner side of curve, binds first of the concrete bed on the outside of curve
Reinforcing bar；
(3) location and installation pre-embedded steel slab and pre-embedded bolt at the second reinforcing bar of concrete anti-collision guard bar, in concrete bed
The pedestal pre-embedded steel slab and high-strength bolt of location and installation steel-guardrail column at first reinforcing bar；
(4) formwork erection and the guardrail concrete on the outside of the inner side of curve and curve is gradually poured；
(5) steel shield, cast steel bearing support and the steel pipe of installation inside concrete anti-collision guard bar, the steel of installation outside steel-guardrail
Fence upright and corrugated sheet steel；
(6) deck paving is carried out, the construction of bridge is completed.
7. the construction method according to claim 6 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that:
In step (1), to assembled prefabricated guardrail then according to requiring pre-buried anchor bar and reserved notch.
8. the construction method according to claim 7 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that:
In step (4), the prefabricated guardrail of on-site consolidation and the concrete that reserving hole in prefabricated guardrail is perfused realize prefabricated guardrail and box beam
Integrated connection.
9. the construction method according to claim 6 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that: institute
Stating bridge includes box beam, the box beam the inner side of curve be equipped with concrete anti-collision guard bar, on the outside of curve be equipped with steel-guardrail.
10. the construction method according to claim 9 for improving concrete flexural beam bridge antidumping bearing capacity, it is characterised in that:
The concrete anti-collision guard bar includes the second reinforcing bar of the vertical reinforcement anchoring reserved with box beam flange plate, on second reinforcing bar
Concrete is poured, the top location and installation of the concrete anti-collision guard bar has pre-embedded steel slab, the concrete anti-collision guard bar
Inside location and installation has pre-embedded bolt, and the inside of the concrete anti-collision guard bar is equipped with the steel shield being spirally connected with pre-embedded bolt, institute
The top for stating concrete anti-collision guard bar is equipped with the cast steel bearing support that connect with pre-embedded steel slab, along bridge on the cast steel bearing support
Extending direction be fixed with steel pipe；The steel-guardrail includes concrete bed, and the concrete bed includes and box beam flange
First reinforcing bar of the reserved vertical reinforcement anchoring of plate has poured concrete, the top of the concrete bed on first reinforcing bar
Portion's location and installation has pedestal pre-embedded steel slab, positioned internal to be equipped with high-strength bolt, and the top of the concrete bed is equipped with installation
Steel-guardrail column on pedestal pre-embedded steel slab, the steel-guardrail column have fixedly connected to the inner side corrugated sheet steel.
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| CN201710431643.5A CN107217598B (en) | 2017-06-09 | 2017-06-09 | A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity |
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| CN201710431643.5A CN107217598B (en) | 2017-06-09 | 2017-06-09 | A kind of construction method improving concrete flexural beam bridge antidumping bearing capacity |
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| CN107217598B true CN107217598B (en) | 2019-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107747274B (en) * | 2017-11-16 | 2023-04-11 | 大连理工大学 | Bent beam bridge limiting device and method |
| CN108716185B (en) * | 2018-07-16 | 2024-03-26 | 广州市市政工程设计研究总院有限公司 | Top plate grouting connection prefabricated reinforced concrete side anti-collision guardrail |
| CN109610352A (en) * | 2019-02-01 | 2019-04-12 | 中庆建设有限责任公司 | A kind of bridge-collision-avoidance wall guard member |
| CN110468631A (en) * | 2019-08-06 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | Traffic route with CFG He the box road structure of armored concrete |
| CN111680352B (en) * | 2020-06-24 | 2024-04-26 | 浙江工业大学 | Beam bridge design method for strong inclination and weak bending |
| CN112647412A (en) * | 2021-01-05 | 2021-04-13 | 南京同力建设集团股份有限公司 | Old bridge new railing structure and construction method thereof |
| CN114277696B (en) * | 2022-01-24 | 2024-05-24 | 杭州江润科技有限公司 | Cast-in-situ reinforced concrete detachable combined guardrail and construction method |
| CN115125848A (en) * | 2022-06-23 | 2022-09-30 | 保利长大工程有限公司 | Construction method of small-radius curve prefabricated plate beam |
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| JP2015178710A (en) * | 2014-03-19 | 2015-10-08 | 横河工事株式会社 | Wall handrail construction method and wall handrail |
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|---|---|---|---|---|
| CN2900615Y (en) * | 2006-06-21 | 2007-05-16 | 北京中路安交通科技有限公司 | Beam colume type steel railing stud |
| CN201746791U (en) * | 2010-07-12 | 2011-02-16 | 北京中路安交通科技有限公司 | High-energy section steel beam column type guardrail |
| KR20130125739A (en) * | 2013-06-20 | 2013-11-19 | 임성수 | Footbridge for extension and river crossing |
| JP2015178710A (en) * | 2014-03-19 | 2015-10-08 | 横河工事株式会社 | Wall handrail construction method and wall handrail |
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