CN108396651B - Steel shell slideway system and construction method - Google Patents

Steel shell slideway system and construction method Download PDF

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Publication number
CN108396651B
CN108396651B CN201810119256.2A CN201810119256A CN108396651B CN 108396651 B CN108396651 B CN 108396651B CN 201810119256 A CN201810119256 A CN 201810119256A CN 108396651 B CN108396651 B CN 108396651B
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China
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steel
steel shell
closed
shaped sliding
safety rope
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CN108396651A (en
Inventor
李传琳
车文庆
何海滨
梁俊雄
高洪辉
樊则飞
张敦宝
李万雄
彭勃
陈美伶
夏德俊
葛昆鹏
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CREEC Kunming Survey Design and Research Co Ltd
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CREEC Kunming Survey Design and Research Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention relates to a steel shell slideway system and a construction method, wherein the system comprises two-end cantilever casting beams, an embedded steel shell arranged at the lower part of the two-end cantilever casting beams, a closed steel shell arranged at the inner side of an embedded steel shell notch, a first sliding device arranged on a flange plate of the two-end cantilever casting beams, a second sliding device arranged on a web plate of the two-end cantilever casting beams and a third sliding device arranged on a bottom plate of the two-end cantilever casting beams, the first sliding device, the second sliding device and the third sliding device are connected with the closed steel shell, the closed steel shell moves to the embedded steel shell notch part along the first sliding device, the second sliding device and the third sliding device, and the shape of the closed steel shell is matched with that of the embedded steel shell. The invention can solve the problems that the existing railway and highway operation under the bridge is folded by adopting the middle steel shell method and the steel shell notch is closed and can not automatically slide in the swivel construction, so that the closure of the steel shell notch is simpler and more convenient, the influence on the road under the bridge is reduced to the minimum, the safety is higher, and the corresponding economic cost is reduced.

Description

Steel shell slideway system and construction method
Technical Field
The invention relates to a slide way system, in particular to a steel shell slide way system and a construction method of the steel shell slide way system.
Background
Along with the development of the economy in China, the railway and expressway networks are initially formed and continuously perfected, and in the construction of the railway and the expressway, the problems that newly built railways and roads need to cross existing railways and busy expressways are inevitably encountered, and a construction method with little influence on the operation of the existing lines is considered.
At present, pushing or turning construction is usually adopted, and the selection should be carried out according to site conditions. When the two sides are turned and folded in the middle, the folding section still can influence the operation of the road under the bridge, the steel shell method can reduce the influence on the road, but the welding of the steel shell notch after the turning is in place still has the problem of influencing the operation of the existing railway and highway under the bridge, and the problem of difficult movement of the steel shell of the closing section exists when the automatic closing steel shell is adopted.
Therefore, it is very necessary to study a construction form that is both economical and safe.
Disclosure of Invention
In order to solve the technical problems, a first object of the present invention is to provide a steel shell slide system, which can be used as an auxiliary system to enable a steel shell gap closing section to rapidly move in place when the middle folding is performed by adopting a steel shell method, and solve the problem that the steel shell gap closing section is difficult to rapidly move, and a second object is to provide a construction method of the steel shell slide system.
The specific scheme of the invention is as follows:
the utility model provides a steel shell slide system, including both ends hang and water the roof beam and locate both ends hang and water the pre-buried steel shell of roof beam lower part, locate the inboard closed steel shell of pre-buried steel shell breach, still including locating both ends hang and water first slider on the roof beam flange board, locate both ends hang and water second slider on the roof beam web and locate both ends hang and water the third slider on the roof beam bottom plate, first slider, second slider and third slider are connected with closed steel shell, closed steel shell moves pre-buried steel shell breach position along first slider, second slider and third slider, closed steel shell shape suits with pre-buried steel shell.
Further, the closed steel shell comprises a shell body and reinforced steel plates which are uniformly arranged on the inner side of the shell body and correspond to the slideway devices, and the first sliding device and the third sliding device are connected with the reinforced steel plates of the closed steel shell.
Further, the first sliding device comprises a plurality of first embedded steel bayonets arranged along the length direction of the flange plates at two sides of the cantilever beam at two ends, a first I-shaped sliding rail arranged between the embedded steel bayonets, a plurality of first rolling shafts arranged on the I-shaped sliding rail and moving along the I-shaped sliding rail, and first lifting ropes connected with two ends of the first rolling shafts, wherein the first lifting ropes are connected with the reinforced steel plates of the closed steel shells corresponding to the flange plates.
Further, the second sliding device comprises a plurality of second embedded steel bayonets and embedded steel plates which are arranged along the length direction of webs at two sides of the cantilever beam at two ends, a support body arranged on one side of the embedded steel plates and second I-shaped sliding rails, wherein the embedded steel plates are arranged below the second embedded steel bayonets and are arranged at intervals with the second embedded steel bayonets, and the second I-shaped sliding rails are arranged between the second embedded steel bayonets and are positioned on the support body.
Further, the middle parts of webs on two sides of the closed steel shell are provided with I-shaped connecting pieces and N8 baffle plates arranged on the front sides of the I-shaped connecting pieces, the lower sides of the N8 baffle plates protrude out of the I-shaped connecting pieces, and the I-shaped connecting pieces slide along the second I-shaped sliding rails.
Further, the other side of the embedded steel plate is connected with a plurality of steel bars outside webs at two sides of the cantilever beam through a plurality of embedded steel bars.
Further, the third sliding device comprises a plurality of third embedded steel bayonets arranged along the length direction and the width direction of the bottom plates at two ends of the cantilever beam, a third I-shaped sliding rail arranged between the embedded steel bayonets along the length direction, a plurality of second rolling shafts arranged on the third I-shaped sliding rail and moving along the I-shaped sliding rail, and second lifting ropes connected with two ends of the second rolling shafts, wherein the second lifting ropes are connected with reinforced steel plates of the closed steel shells corresponding to the bottom plates.
Further, the safety rope comprises an I-shaped sliding rail fixing safety rope and a closed steel shell fixing safety rope, one end of the I-shaped sliding rail fixing safety rope is fixed with the I-shaped sliding rail, the other end of the I-shaped sliding rail fixing safety rope is connected with the embedded steel bayonet, the length is adjustable, one end of the closed steel shell fixing safety rope is fixed with the reinforced steel plate of the closed steel shell, and the other end of the closed steel shell fixing safety rope is connected with the embedded steel bayonet, and the length is adjustable.
The construction method of the steel shell slideway system comprises the following steps:
constructing a bridge foundation, a bridge pier and a swivel structure, pouring cantilever beams at two ends, burying pre-buried steel plates and pre-buried steel bayonets of all sliding devices into concrete of the cantilever beams, and installing pre-buried steel shells;
step (2), preparing I-shaped sliding rails, lifting ropes, rolling shafts, fixing ropes and other components of each sliding device;
step (3), hoisting the closed steel shell, and simultaneously installing a closed steel shell fixing safety rope and locking;
step (4), installing corresponding I-shaped sliding rails in the embedded bayonets, and installing a rolling shaft, a lifting rope and the I-shaped sliding rails to fix the safety rope and lock the safety rope;
step (5), adjusting the height and the position of the I-shaped sliding rail, and plugging by using a wood pile;
step (6), the bridge swivel is in place, and the posture of the bridge body is adjusted;
step (7), loosening a wood pile of the I-shaped sliding rail and fixing a safety rope, and rapidly moving the I-shaped sliding rail under the protection of the fixed pressing rope to enable the I-shaped sliding rail to be in place;
and (8) adjusting the position and elevation of the I-shaped slide rail, locking the I-shaped slide rail again by using the wood pile, and removing the I-shaped slide rail to fix the safety rope.
And (9) pulling the closed steel shell at the other end after the closed steel shell is opened to fix the safety rope, so that the safety rope is quickly positioned.
And (10) welding the closed steel shell and the embedded steel shell.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention can be used as an auxiliary system, so that the closure section of the steel shell notch can be moved in place quickly, and the optimization treatment is carried out on the structure, so that the closure of the steel shell notch is simpler and more convenient, the welding is not needed above a road, and the problem that the steel shell closure of the notch by a steel shell closure method is difficult to move can be effectively solved.
(2) The material is simple to manufacture and convenient to construct.
(3) The steel shell slideway system can be used as an auxiliary bearing structure, and welding is not needed above the road, so that the influence on the road under the bridge is minimized, and the steel shell folding is safer and simpler.
(4) The engineering can be implemented more safely, the construction period is short, the construction cost is saved, the engineering cost is economical and reasonable, and the technology is innovated.
Drawings
FIG. 1 is a schematic view of the steel shell skid system of the present invention;
FIG. 2 is a side view of the steel shell runner system of the present invention;
FIG. 3 is an enlarged view of a second slide of the present invention;
fig. 4 is an enlarged view of a third sliding apparatus of the present invention.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is apparent that the described embodiment is only a part of examples of the present invention, not all examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-2, a steel shell slideway system of the embodiment comprises two end cantilever beams 1, an embedded steel shell 6 arranged at the lower part of the two end cantilever beams 1, a closed steel shell 5 arranged at the inner side of a gap of the embedded steel shell 6, a first sliding device 2 arranged on a flange plate of the two end cantilever beams 1, a second sliding device 3 arranged on a web plate of the two end cantilever beams 1 and a third sliding device 4 arranged on a bottom plate of the two end cantilever beams 1, wherein the first sliding device 2, the second sliding device 3 and the third sliding device 4 are connected with the closed steel shell 5, the closed steel shell 5 moves to the gap part of the embedded steel shell along the first sliding device 2, the second sliding device 3 and the third sliding device 4, and the shape of the closed steel shell 5 is matched with that of the embedded steel shell 6.
The closure steel shell 5 comprises a shell and reinforced steel plates uniformly arranged on the inner side of the shell, and the first sliding device 2 and the third sliding device 4 are connected with the reinforced steel plates of the closure steel shell 5.
The first sliding device 2 comprises a plurality of first embedded steel bayonets 2.1 arranged along the length direction of the flange plates at two sides of the cantilever beam 1 at two ends, a first I-shaped sliding rail 2.2 arranged between the first embedded steel bayonets 2.1, a plurality of first rolling shafts 2.3 arranged on the first I-shaped sliding rail 2.2 and moving along the first I-shaped sliding rail 2.2, and first lifting ropes 2.4 connected with two ends of the first rolling shafts 2.3, wherein the first lifting ropes 2.4 are connected with reinforced steel plates of a closed steel shell 5 corresponding to the flange plates.
As shown in fig. 3, the second sliding device 3 includes a plurality of second pre-buried steel bayonets 3.1 and pre-buried steel plates 3.2 arranged along the length direction of webs at two sides of the cantilever beam 1 at two ends, a support body 3.3 arranged at one side of the pre-buried steel plates 3.2, and a second i-shaped sliding rail 3.4, wherein the pre-buried steel plates 3.2 are arranged below the second pre-buried steel bayonets 3.1 and are arranged at intervals with the second pre-buried steel bayonets 3.1, and the second i-shaped sliding rail 3.4 is arranged between the second pre-buried steel bayonets 3.1 and is positioned on the support body 3.3. The middle part of the closed steel shell 5 is provided with an I-shaped connecting piece 3.5 and an N8 baffle plate 3.6 arranged on the front side of the I-shaped connecting piece, the lower side of the N8 baffle plate 3.6 protrudes out of the I-shaped connecting piece, and the I-shaped connecting piece 3.5 slides along a second I-shaped sliding rail 3.4. The other side of the embedded steel plate 3.2 is connected with a plurality of steel bars outside the web plate through a plurality of embedded steel bars 3.7. The support 3.3 may be i-steel.
As shown in fig. 4, the third sliding device 4 includes a plurality of third pre-buried steel bayonets 4.1 arranged along the length direction and the width direction of the bottom plates at two sides of the cantilever beam 1 at two ends, a third i-shaped sliding rail 4.2 arranged between the pre-buried steel bayonets 4.1 along the length direction, a plurality of second rolling shafts 4.3 arranged on the third i-shaped sliding rail 4.2 and moving along the i-shaped sliding rail 4.2, and second lifting ropes 4.4 connected with two ends of the second rolling shafts 4.3, wherein the second lifting ropes 4.4 are connected with reinforced steel plates of a closed steel shell 5 corresponding to the bottom plates.
The safety rope also comprises a first I-shaped sliding rail fixed safety rope 2.5, a second I-shaped sliding rail fixed safety rope 3.8, a third I-shaped sliding rail fixed safety rope 4.5, a first closed steel shell fixed safety rope 2.6 and a second closed steel shell fixed safety rope 4.6. One end of the first I-shaped sliding rail fixing safety rope 2.5, one end of the second I-shaped sliding rail fixing safety rope 3.8 and one end of the third I-shaped sliding rail fixing safety rope 4.5 are respectively fixed with the first I-shaped sliding rail 2.2, the second I-shaped sliding rail 3.4 and the third I-shaped sliding rail 4.2, and the other end of the first I-shaped sliding rail fixing safety rope is respectively connected with the first pre-buried steel bayonet 2.1, the second pre-buried steel bayonet 3.1 and the third pre-buried steel bayonet 4.1, and the length of the first I-shaped sliding rail fixing safety rope is adjustable.
One end of the first closed steel shell fixed safety rope 2.6 and one end of the second closed steel shell fixed safety rope 4.6 are respectively fixed with the reinforced steel plates corresponding to the closed steel shell 5, and the other end of the first closed steel shell fixed safety rope is respectively connected with the first embedded steel bayonet 2.1 and the third embedded steel bayonet 4.1, and the length of the first closed steel shell fixed safety rope and the second closed steel shell fixed safety rope is adjustable.
The first embedded steel bayonet 2.1, the second embedded steel bayonet 3.1 and the third embedded steel bayonet 4.1 are made into a hook shape and are directly embedded into the concrete of the cantilever beam 1, and the depth of embedding is not less than 20cm. The wood stack is directly padded below the first I-shaped sliding rail 2.2 and the third I-shaped sliding rail 4.2, the thickness is adjustable, the wood stack is used for plugging the first I-shaped sliding rail 2.2 and the third I-shaped sliding rail 4.2, and the elevation of the wood stack is adjusted according to the requirement.
The steel shell slide system of the embodiment is an auxiliary system, and after the rotator is in place, the steel shell 5 is closed and positioned quickly under the assistance of the slide system.
The method comprises the steps of hanging and pouring a last section of steel shell 6, a pre-buried steel plate 3.1 and pre-buried steel bayonets of all sliding devices at two ends of a beam 1, hanging and installing notch closed steel shells 5 at the inner side of one long end of the hanging steel shell, installing I-shaped sliding rails of all sliding devices at corresponding positions, installing hanging ropes and rolling shafts, adjusting elevation, enabling the I-shaped sliding rails to participate in stress of the closed steel shells 5, plugging the I-shaped sliding rails in all steel bayonets by using a wood pile, locking the closed steel shells 5 and all the I-shaped sliding rails by using fixed safety ropes, quickly releasing wood wedges in all the steel bayonets within a specified time after turning in place, loosening the fixed safety ropes of all the I-shaped sliding rails, adjusting all the I-shaped sliding rails under the protection of the fixed safety ropes, enabling all the closed steel shells to be fixed safety ropes to be adjusted again, pulling the closed steel shells 5 to enable all the closed steel shells to be fast closed, sealing notches of the steel shells, welding joints at the inner sides after sealing, guaranteeing that the steel shells cannot be plugged, casting beam bodies in the steel shells, tensioning, pre-stressing the steel shells and the like, and dismantling a system after construction is completed.
The rolling shafts and the lifting ropes supported by the I-shaped sliding rails are used as auxiliary bearing structures of the closed steel shell 5, and the rolling shafts and the lifting ropes cannot be removed until prestress tensioning is finished when the closed steel shell 5 is hoisted, the beam body is rotated, the closed steel shell 5 is moved and concrete is poured in the later steel shell, and the lifting ropes can be cut off to remove the rolling shafts.
The specific construction method comprises the following steps:
and (1) constructing a bridge foundation, a bridge pier and a swivel structure, pouring the cantilever into the cantilever beam 1 at two ends, burying the embedded steel plate 3.2 and the embedded steel bayonet of each sliding device into the concrete of the cantilever beam 1, and installing the embedded steel shell 6.
And (2) preparing the I-shaped sliding rail, the lifting rope, the roller fixing rope and other components of each sliding device.
And (3) hoisting the closed steel shell 5, and simultaneously installing a closed steel shell fixing safety rope and locking.
And (4) installing corresponding I-shaped sliding rails in the embedded bayonets, and installing a rolling shaft, a lifting rope and the I-shaped sliding rails to fix the safety rope and lock the safety rope.
And (5) adjusting the height and the position of the I-shaped sliding rail, and plugging by using a wood pile.
And (6) positioning the bridge swivel, and adjusting the posture of the beam body.
And (7) loosening the wood pile of the I-shaped sliding rail and fixing the safety rope, and rapidly moving the I-shaped sliding rail to be in place under the protection of the fixed safety rope.
And (8) adjusting the position and elevation of the I-shaped slide rail, locking the I-shaped slide rail again by using the wood pile, and removing the fixed safety rope of the I-shaped slide rail.
And (9) pulling the closed steel shell 5 at the other end after the closed steel shell is opened to fix the safety rope, so that the safety rope is quickly positioned.
And (10) welding the closed steel shell 5 and the embedded steel shell 6.
And (11) constructing concrete and tensioning prestress of the folding section beam body in the steel shell.
Step (12), removing all parts of each sliding device.
And (13) constructing other structures of the bridge.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (6)

1. The utility model provides a steel casing slide system, includes that both ends hang and water the roof beam and locate the both ends and hang the pre-buried steel casing of watering the roof beam lower part, locate the closed steel casing of pre-buried steel casing breach inboard, its characterized in that: the closed steel shell moves to the embedded steel shell notch part along the first sliding device, the second sliding device and the third sliding device, and the shape of the closed steel shell is adapted to that of the embedded steel shell;
the first sliding device comprises a plurality of first embedded steel bayonets arranged along the length direction of flange plates at two sides of the cantilever beam, a first I-shaped sliding rail arranged between the embedded steel bayonets, a plurality of first rolling shafts arranged on the I-shaped sliding rail and moving along the I-shaped sliding rail, and first lifting ropes connected with two ends of the first rolling shafts, wherein the first lifting ropes are connected with reinforced steel plates of closed steel shells corresponding to the flange plates;
the second sliding device comprises a plurality of second embedded steel bayonets and embedded steel plates which are arranged along the length direction of webs at two sides of the cantilever beam at two ends, a support body arranged at one side of the embedded steel plates and second I-shaped sliding rails, wherein the embedded steel plates are arranged below the second embedded steel bayonets and are arranged at intervals with the second embedded steel bayonets, and the second I-shaped sliding rails are arranged between the second embedded steel bayonets and are positioned on the support body;
the third sliding device comprises a plurality of third embedded steel bayonets arranged along the length direction and the width direction of the bottom plates at two ends of the cantilever beam, a third I-shaped sliding rail arranged between the embedded steel bayonets along the length direction, a plurality of second rolling shafts arranged on the third I-shaped sliding rail and moving along the I-shaped sliding rail, and second lifting ropes connected with two ends of the second rolling shafts, wherein the second lifting ropes are connected with reinforced steel plates of the closed steel shells corresponding to the bottom plates.
2. The steel shell slide system of claim 1 wherein: the closed steel shell comprises a shell body and reinforced steel plates which are uniformly arranged on the inner side of the shell body and correspond to the slideway devices, and the first sliding device and the third sliding device are connected with the reinforced steel plates of the closed steel shell.
3. The steel shell slide system of claim 1 wherein: the middle parts of webs on two sides of the closed steel shell are provided with I-shaped connecting pieces and N8 baffle plates arranged on the front sides of the I-shaped connecting pieces, the lower sides of the N8 baffle plates are protruded to form the I-shaped connecting pieces, and the I-shaped connecting pieces slide along the second I-shaped sliding rails.
4. The steel shell slide system of claim 1 wherein: the other side of the embedded steel plate is connected with a plurality of steel bars outside webs at two sides of the cantilever beam through a plurality of embedded steel bars.
5. The steel shell slide system of claim 1 wherein: the device also comprises an I-shaped slide rail fixing safety rope and a closed steel shell fixing safety rope, wherein one end of the I-shaped slide rail fixing safety rope is fixed with the I-shaped slide rail, the other end of the I-shaped slide rail fixing safety rope is connected with the embedded steel bayonet, and the length of the I-shaped slide rail fixing safety rope is adjustable; one end of the closed steel shell fixing safety rope is fixed with the reinforced steel plate of the closed steel shell, the other end of the closed steel shell fixing safety rope is connected with the embedded steel bayonet, and the length of the closed steel shell fixing safety rope is adjustable.
6. A method of constructing a steel shell slide system as claimed in any one of claims 1 to 5 wherein: the method comprises the following steps:
constructing a bridge foundation, a bridge pier and a swivel structure, pouring cantilever beams at two ends, burying pre-buried steel plates and pre-buried steel bayonets of all sliding devices into concrete of the cantilever beams, and installing pre-buried steel shells;
step (2), preparing I-shaped sliding rails, lifting ropes, rolling shafts and fixed safety ropes of all sliding devices;
step (3), hoisting the closed steel shell, and simultaneously installing a closed steel shell fixing safety rope and locking;
step (4), installing corresponding I-shaped sliding rails in the embedded bayonets, and installing a rolling shaft, a lifting rope and the I-shaped sliding rails to fix the safety rope and lock the safety rope;
step (5), adjusting the height and the position of the I-shaped sliding rail, and plugging by using a wood pile;
step (6), the bridge swivel is in place, and the posture of the bridge body is adjusted;
step (7), loosening a wood pile of the I-shaped sliding rail and fixing a safety rope on the I-shaped sliding rail, and rapidly moving the I-shaped sliding rail to be in place under the protection of the fixed safety rope;
step (8), adjusting the position and elevation of the I-shaped sliding rail, locking the I-shaped sliding rail again by using a wood pile, and removing a fixed safety rope of the I-shaped sliding rail;
step (9), after the closed steel shell is opened to fix the safety rope, pulling the closed steel shell at the other end to enable the closed steel shell to be positioned quickly;
and (10) welding the closed steel shell and the embedded steel shell.
CN201810119256.2A 2018-02-06 2018-02-06 Steel shell slideway system and construction method Active CN108396651B (en)

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Application Number Priority Date Filing Date Title
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CN108396651B true CN108396651B (en) 2023-05-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112479115A (en) * 2020-11-02 2021-03-12 上海市基础工程集团有限公司 Be used for steel-concrete composite beam cable-stay bridge to close bridge floor crane combined hoisting construction equipment of section

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CN102011369A (en) * 2010-11-12 2011-04-13 中铁十二局集团第二工程有限公司 Construction method of steel shells of bridge closure segments striding over various roads
CN103452052A (en) * 2013-08-26 2013-12-18 中铁六局集团有限公司 Movable mold hanging equipment for closing swivel bridges and closure section construction method
CN203346780U (en) * 2013-06-25 2013-12-18 中国建筑土木建设有限公司路桥分公司 Arch skew block stiff skeleton
CN103603265A (en) * 2013-12-02 2014-02-26 中铁第一勘察设计院集团有限公司 Closure section steel shell of turning continuous beam
CN205369052U (en) * 2016-02-29 2016-07-06 中交第一公路工程局有限公司 Contact net continuous beam midspan closure construction structure that does not have a power failure
CN107142853A (en) * 2017-07-04 2017-09-08 中铁十二局集团有限公司 Continuous beam closure box hat constructing device in place and construction method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004324164A (en) * 2003-04-23 2004-11-18 Ps Mitsubishi Construction Co Ltd Method of constructing corrugated steel web pc bridge closure section
CN102011369A (en) * 2010-11-12 2011-04-13 中铁十二局集团第二工程有限公司 Construction method of steel shells of bridge closure segments striding over various roads
CN203346780U (en) * 2013-06-25 2013-12-18 中国建筑土木建设有限公司路桥分公司 Arch skew block stiff skeleton
CN103452052A (en) * 2013-08-26 2013-12-18 中铁六局集团有限公司 Movable mold hanging equipment for closing swivel bridges and closure section construction method
CN103603265A (en) * 2013-12-02 2014-02-26 中铁第一勘察设计院集团有限公司 Closure section steel shell of turning continuous beam
CN205369052U (en) * 2016-02-29 2016-07-06 中交第一公路工程局有限公司 Contact net continuous beam midspan closure construction structure that does not have a power failure
CN107142853A (en) * 2017-07-04 2017-09-08 中铁十二局集团有限公司 Continuous beam closure box hat constructing device in place and construction method

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