CN111945569B - Small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning assembly construction method - Google Patents
Small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning assembly construction method Download PDFInfo
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- CN111945569B CN111945569B CN202010803607.9A CN202010803607A CN111945569B CN 111945569 B CN111945569 B CN 111945569B CN 202010803607 A CN202010803607 A CN 202010803607A CN 111945569 B CN111945569 B CN 111945569B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 192
- 239000010959 steel Substances 0.000 title claims abstract description 192
- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 18
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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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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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
- E01D4/00—Arch-type bridges
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Abstract
The invention discloses a small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning assembly construction method, which changes the traditional support method erection process into a support-free assembly process at the construction stage of a bridge steel arch tower facility, and has controllable quality of a steel arch tower; in addition, the construction difficulty is reduced, the engineering quantity of auxiliary measures such as hoisting equipment, temporary supports, assembly sites and the like is saved, the construction period is shortened, the cost is reduced, the passage of a channel is ensured, and the operation is convenient. The invention provides a small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and splicing construction method, which realizes the factory manufacturing, transportation, hoisting and positioning of the steel arch tower and solves the construction problems of limited operation space, tight construction period and river crossing with navigation requirements of bridge construction.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a support-free in-situ assembly type asymmetric tensioning and assembling construction method for a small-angle inclined steel arch tower, which is particularly suitable for installation and construction of the steel arch tower with limited operation space, tight construction period and asymmetric tensioning of bilateral stay cables.
Background
The inclined steel arch tower is used as a structural form of a bridge tower, has the advantages of definite structural stress, novel design, attractive building appearance and the like, and is often applied to bridges crossing roads, rivers and municipal administration. At present, the construction method of the steel arch tower girder bridge mostly depends on external facilities such as a bracket and the like, follows the symmetry of a left tower column and a right tower column, sequentially assembles from the bottom to the top of the tower, realizes the closure method on the top of the tower, and selects construction auxiliary facilities and installation equipment according to the structural characteristics, environmental factors and boundary conditions of the steel arch tower girder bridge.
For a small-angle inclined steel arch tower, a main tower is an arch tower which is inclined along the bridge direction, the included angle between the axis of the arch tower and the vertical plane along the bridge direction is 10 degrees, the inclined direction is the side span direction, and the height of the steel arch tower part is 52.5 m. In the plane of the axis of the arch tower, the inner edge and the outer edge of the arch tower are oval, the steel tower column adopts an all-steel structure, the box-shaped section has a 30mm thickness of a steel plate along the bridge direction, a 36mm thickness of a steel plate along the bridge direction and a 16mm thickness of a diaphragm plate, stiffening ribs (the 30mm thickness of the diaphragm plate in the inhaul cable area) adopt vertical ribs, and the wall thickness is changed from 24mm to 16 mm. The width of the steel tower column along the bridge direction is gradually changed from a straight line of 4m to 7.4m, and the width of the steel tower column along the bridge direction is changed from 3.2m to 3.995m according to an elliptic curve: the tower column is divided into 41 sections, the steel plates on the tower wall are welded, and the stiffening ribs are connected by high-strength bolts. The stay cables are arranged in a space double-cable-surface fan shape, the two cable surfaces are arranged on the outer side of a sidewalk, the distance between the stay cables on a steel box girder (main span) is 9m, the distance between concrete sides (side spans) is 4.5m, the distance between the stay cables on a tower is 2.5m, 9 pairs of the stay cables on one side are arranged, and the number of full bridges is 18.
Due to poor landform at the bridge site, the river channel is a VI-level channel, the construction progress of the concrete at the side span side (the inclined side of the arch tower) is slow, and the working surface cannot be provided; at the same time, the clear distance of navigation is not less than 25.8m and the clear distance is not less than 5.15 m. Through comprehensive evaluation of a steel arch tower support-free assembly type in-situ assembly construction scheme, the following problems are mainly solved:
(1) the steel arch tower is inclined outwards by 10 degrees, the height above a bridge deck reaches 52.5m, the section of the arch tower section is large, the single weight reaches 106.51 tons, and the installation risk of the steel arch tower is high.
(2) When the steel arch tower is erected, the main span and the side span stay cables are asymmetrically tensioned, and the requirement on high accuracy of the steel arch tower in the line arrangement is difficult.
(3) The thickness of the steel plate of the steel arch tower reaches 36mm, most of the steel plate is provided with curved surface sections, the longitudinal and transverse welding lines are dense, and the requirement on welding line quality control is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method.
A small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method comprises the following steps:
step 1: steel arch tower segmentation:
dividing the steel arch tower into a plurality of sections, processing the plurality of sections into a plurality of hoisting sections, and assembling the hoisting sections section by section on site; the weight of the bottom section is greater than that of the high-altitude section; each segment is provided with a section of diaphragm plate;
step 2: arranging hoisting equipment near a main pier of the steel arch tower for hoisting and assembling the steel arch tower sections;
and step 3:
stretching the prestressed steel strand in the steel-concrete combined section;
hoisting and erecting the steel arch tower section by section to a first section;
hanging the stay cables at the side of the steel box girder on the tower column pair by pair;
a first cross brace is arranged between the left steel tower and the right steel tower at the first segment;
and 4, step 4:
continuously hoisting and erecting the steel arch tower section by section upwards to a second section, and adjusting the stay cables when each section of the steel arch tower is installed in the process to ensure the installation line type of each section of the steel arch tower;
continuously hanging the stay cables on the side of the steel box girder on the tower column pair by pair;
installing a second cross brace between the left steel tower and the right steel tower of the second section, tensioning the stay cable, and adjusting the line type of the installed arch tower;
and 5:
continuously hoisting and erecting the steel arch tower section by section to a third section;
installing a third cross brace between a left steel tower and a right steel tower of a third section and a closing opening adjusting device on the cross brace, and adjusting the stay cables in the installation process to ensure the installation line type of each steel arch tower section;
step 6:
continuously hoisting and erecting the steel arch towers section by section to closure sections, in the process, adjusting the adjustment line type of a stay cable when each closure section steel arch tower is installed, tensioning Z5 and Z9 stay cables to adjust the size of a longitudinal closure opening when the arch towers are closed, and adjusting the size of a transverse closure opening by using a closure opening adjusting device on a third cross brace to close the steel arch towers;
and 7:
after the steel arch towers are jointed, all cross braces and joint opening adjusting devices between the arch towers are dismantled by using hoisting equipment.
According to the preferable technical scheme, the left tower column and the right tower column of the steel arch tower are symmetrical, the steel arch tower sections are assembled from the bottom of the steel arch tower to the top of the tower in an assembling mode, and the closure sections are arranged on the top of the steel arch tower.
Preferably, only the main span stay cable is tensioned during the stay cable tensioning, and the side span stay cable is not installed.
As a preferred technical scheme, each vertical face of each steel arch tower segment is respectively provided with a group of matching pieces for matching with adjustment measures to accurately position the steel arch tower.
As an optimal technical scheme, a lifting lug is arranged on the inner side of each vertical face of each steel arch tower section, and the steel arch tower sections are adjusted to a designed inclined angle during lifting by utilizing the length of a lifting steel wire rope.
As an optimal technical scheme, four measuring points are arranged on each vertical surface of each steel arch tower section, and two total stations are used for measuring, so that the linear adjustment of the steel arch tower sections is facilitated.
As a preferred technical scheme, in the installation process of the steel arch tower, when the next section of the steel arch tower is installed, the welding seam of the previous section of the steel arch tower needs to be welded; and simultaneously rechecking the linear form of the previous section of the steel arch tower, and taking the measured data as the installation control basis of the next beam section.
As a preferred technical scheme, when the butt welding seam of the steel arch tower is welded, the lower point is welded, and the line type of the steel arch tower is adjusted through the welding sequence of the welding seam.
As the preferred technical scheme, hanging baskets are arranged on four side walls of the steel arch tower segment and are used for welding the steel arch tower segment and installing stay cables.
As a preferred technical scheme, two ends of the first cross brace and the second cross brace are welded with the steel arch tower to form a fixed node; one end of the third cross brace is welded with the steel arch tower to form a fixed node, the other end of the third cross brace is provided with a sleeve, and the sleeve is welded with the steel arch tower to form a hinged node, so that the transverse size of the closure opening can be conveniently adjusted when the steel arch tower is closed.
Has the advantages that:
(1) the small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method solves the construction problems of limited construction space and tight construction period of the inclined steel arch tower.
(2) The engineering quantity of auxiliary measures such as hoisting equipment, temporary supports, assembly sites and the like can be saved, meanwhile, part of stay cables and the steel arch towers are constructed in a crossed mode, the construction period is shortened, and the cost is reduced; meanwhile, the steel arch tower is erected without a temporary support, so that the installation and dismantling risks are avoided, and the passage of a channel is ensured.
(3) The assembly operation is centralized, the assembly type assembly is realized, the process is simplified, the optimal organization of construction and production is facilitated, and the assembly type assembly method is very beneficial to ensuring the quality, improving the work efficiency and reducing the cost.
(4) The support-free in-situ assembly type asymmetric tensioning and splicing construction method of the small-angle inclined steel arch tower is technically feasible, safe, reliable, economical and reasonable, and has a great popularization value.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a sectional view of a steel pylon in an embodiment of the invention;
FIG. 2 is a view of a steel arch tower in an embodiment of the present invention mounted to a first wale;
FIG. 3 is a diagram of a steel pylons erected to a second cross brace in an embodiment of the present invention;
FIG. 4 is a view of a steel arch tower in an embodiment of the present invention set to a third wale;
FIG. 5 is a drawing of a closure adjustment device on a third wale in an embodiment of the present invention;
FIG. 6 is a close up view of a steel arch tower in an embodiment of the invention;
fig. 7 is a cross brace dismantling view of a steel arch tower in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention will now be further described with reference to the accompanying drawings.
The embodiment of the invention relates to a small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method, which specifically comprises the following steps:
(1) the steel arch tower is divided into small sections, the small sections are manufactured into hoisting sections in a processing plant and are used for assembling the steel arch tower section by section on site, and the steel arch tower section follows the following principle: the requirements of transportation height limitation and width limitation are met; the weight of the bottom section is large, and the weight of the high-altitude section is small; each segment comprises a diaphragm; the segmented view after processing is shown with reference to fig. 1. FIG. 1 is a schematic diagram of a communications system
The segment marks in the embodiment of the invention which are respectively shown represent segments 1-21 respectively, and because the steel arch tower is symmetrical left and right, the left and right sides represent the same segment. The lower part of the steel arch tower is mainly a lower tower column and a steel-concrete combined section, so the sections are divided from the upper end of the steel-concrete combined section.
Arranging a large-tonnage crane near a main pier of the steel arch tower, wherein the large-tonnage crane is used for hoisting and assembling the steel arch tower sections;
referring to fig. 2, after the prestressed steel strands in the steel-concrete combined section are tensioned, the steel arch tower is hoisted and erected to 11 sections section by section through a large-tonnage crane, and then the stayed cables Z1-Z5 on the steel box girder side are hung on the tower column pair by pair; then, a first cross brace 1 is installed between the 11 sections of left and right steel towers, and then Z5 pairs of stay cables are tensioned according to the calculation result to adjust the line type of the installed arch tower;
continuing to refer to fig. 3, continuing to hoist and erect the steel arch tower section by section to 15 sections, during the process, adjusting Z5 pairs of stay cables according to the calculation result when each section of the steel arch tower is installed, ensuring the installation line type of each section of the steel arch tower, and then hanging the steel box girder side Z6-Z9 stay cables on the tower column pair by pair; then, a second cross brace 2 is installed between the 15 sections of left and right steel towers, and the installed arch tower linear type is adjusted according to Z5 and Z9 pair of stay cables which are tensioned through calculation;
continuing to refer to fig. 4 and 5, continuing to hoist and erect the steel pylons to 18 segments section by section, and installing a third cross brace 3 between the left and right steel pylons of 18 segments and a closure port adjusting device 4 on the third cross brace 3, wherein during the process, when each segment of steel pylon, cross brace and adjusting device are installed, adjusting the diagonal cables of the pairs of Z5 and Z9 according to the calculation result, so as to ensure the installation line shape of each steel pylon segment;
continuing to refer to fig. 6, continuing to hoist and erect the steel arch tower section by section to the closure section, during the installation of each section steel arch tower, adjusting Z5 and Z9 to adjust the linear shape of the stay cables according to the calculation result, tensioning Z5 and Z9 stay cables to adjust the size of the longitudinal closure opening when the arch tower is closed, and adjusting the size of the transverse closure opening by using the closure opening adjusting device 4 on the third cross brace 3 to close the steel arch tower;
with continued reference to fig. 7, after the steel pylons are closed, the inter-pylon spreader and the closure opening adjusting device are removed by using a large-tonnage crane, and then the construction of the stay cables is performed.
In the embodiment of the invention, the left tower column and the right tower column of the steel arch tower are symmetrical, the steel arch tower sections are assembled in an assembling mode according to the principle that the bottom of the steel arch tower goes up to the top of the tower in sequence, and the steel arch tower sections are connected in a closure mode.
In the embodiment of the invention, the steel arch tower is not provided with a bracket, and only three transverse supports are arranged to limit transverse displacement. The method for adjusting the linear shape of the steel arch tower mainly comprises the steps of tensioning stay cables and adjusting devices on a third cross brace. The stay cable is only used for tensioning the main span stay cable, and the side span stay cable is not installed and is used for asymmetrically tensioning the main span and the side span.
In the embodiment of the invention, a group of matching parts are respectively arranged on each vertical surface of each steel arch tower section, and the steel arch tower is accurately positioned by matching with adjustment measures, so that the installation requirement is met;
in the embodiment of the invention, the inner side of each vertical surface of each steel arch tower section is respectively provided with a lifting lug, and the steel arch tower sections are adjusted to the designed inclined angle during hoisting by utilizing the length of a hoisting steel wire rope, so that the damage of the arch tower caused by secondary cutting is avoided;
in the embodiment of the invention, four measuring points are arranged on each vertical surface of each steel arch tower section, and two total stations are used for measuring, so that the linear adjustment of the steel arch tower sections is facilitated;
in the embodiment of the invention, when the next section of steel arch tower is installed, the welding seam of the previous section of steel arch tower needs to be welded; simultaneously rechecking the linear form of the previous section of the steel arch tower, and taking the measured data as the installation control basis of the next beam section;
in the embodiment of the invention, when the butt weld of the steel arch tower is welded, the linear shape of the steel arch tower is adjusted by utilizing the welding sequence of the weld according to the principle of welding after a lower point;
in the embodiment of the invention, hanging baskets are arranged on four side walls of the steel arch tower segment to weld the steel arch tower segment and install the stay cables;
in the embodiment of the invention, two ends of the first cross brace and the second cross brace are welded with the steel arch tower to form fixed nodes; one end of the third cross brace is welded with the steel arch tower to form a fixed node, the other end of the third cross brace is provided with a sleeve, and the sleeve is welded with the steel arch tower to form a hinged node, so that the transverse size of the closure opening can be conveniently adjusted when the steel arch tower is closed.
In the embodiment of the invention, the steel arch tower wire shape is mainly realized by adjusting the Z5/Z9 stay cables, and the rest suspended stay cables are used as standby cables.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. A small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method is characterized by comprising the following steps of: the method comprises the following steps:
step 1: steel arch tower segmentation:
dividing the steel arch tower into a plurality of sections, processing the plurality of sections into a plurality of hoisting sections, and assembling the hoisting sections section by section on site; the weight of the bottom section is greater than that of the high-altitude section; each segment is provided with a section of diaphragm plate;
in the process of installing the steel arch tower, when the next section of the steel arch tower is installed, the welding seam of the previous section of the steel arch tower needs to be welded; simultaneously rechecking the linear form of the previous section of the steel arch tower, and taking the measured data as the installation control basis of the next beam section;
when butt welding seams of the steel arch tower are welded, welding is carried out after the lower point, and the line type of the steel arch tower is adjusted through the welding sequence of the welding seams;
step 2: arranging hoisting equipment near a main pier of the steel arch tower for hoisting and assembling the steel arch tower sections;
and step 3:
stretching the prestressed steel strand in the steel-concrete combined section;
hoisting and erecting the steel arch tower section by section to a first section;
hanging the stay cables at the side of the steel box girder on the tower column pair by pair;
a first cross brace is arranged between the left steel tower and the right steel tower at the first segment;
and 4, step 4:
continuously hoisting and erecting the steel arch tower section by section upwards to a second section, and adjusting the stay cables when each section of the steel arch tower is installed in the process to ensure the installation line type of each section of the steel arch tower;
continuously hanging the stay cables on the side of the steel box girder on the tower column pair by pair;
installing a second cross brace between the left steel tower and the right steel tower of the second section, tensioning the stay cable, and adjusting the line type of the installed arch tower;
and 5:
continuously hoisting and erecting the steel arch tower section by section to a third section;
installing a third cross brace between a left steel tower and a right steel tower of a third section and a closing opening adjusting device on the cross brace, and adjusting the stay cables in the installation process to ensure the installation line type of each steel arch tower section;
both ends of the first transverse strut and the second transverse strut are welded with the steel arch tower to form a fixed node; one end of the third cross brace is welded with the steel arch tower to form a fixed node, the other end of the third cross brace is provided with a sleeve, and the sleeve is welded with the steel arch tower to form a hinged node, so that the transverse size of a closure opening can be conveniently adjusted when the steel arch tower is closed;
step 6:
continuously hoisting and erecting the steel arch towers section by section to closure sections, in the process, adjusting the adjustment line type of a stay cable when each closure section steel arch tower is installed, tensioning Z5 and Z9 stay cables to adjust the size of a longitudinal closure opening when the arch towers are closed, and adjusting the size of a transverse closure opening by using a closure opening adjusting device on a third cross brace to close the steel arch towers;
and 7:
after the steel arch towers are jointed, all cross braces and joint opening adjusting devices between the arch towers are dismantled by using hoisting equipment.
2. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: the left tower column and the right tower column of the steel arch tower are symmetrical, the steel arch tower sections are assembled from the bottom of the steel arch tower to the top of the tower in sequence, and the closure sections are arranged on the top of the steel arch tower.
3. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: and only the main span stay cable is tensioned during the tensioning of the stay cable, and the side span stay cable is not installed.
4. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: and each vertical surface of each steel arch tower segment is respectively provided with a group of matching pieces for matching with adjustment measures to accurately position the steel arch tower.
5. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: and a lifting lug is arranged on the inner side of each vertical surface of each steel arch tower section respectively, and the steel arch tower sections are adjusted to the designed inclined angle by utilizing the length of a hoisting steel wire rope during hoisting.
6. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: and four measuring points are arranged on each vertical surface of each steel arch tower section, and two total stations are used for measuring, so that the linear adjustment of the steel arch tower sections is facilitated.
7. The small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning and assembling construction method according to claim 1, which is characterized in that: hanging baskets are arranged on four side walls of the steel arch tower section and are used for welding the steel arch tower section and installing stay cables.
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| CN113550230B (en) * | 2021-07-14 | 2022-10-21 | 中铁四局集团第二工程有限公司 | Special-shaped arch tower double-cable-plane steel cable-stayed bridge assembly type construction and control method |
| CN113722801B (en) * | 2021-09-07 | 2023-06-20 | 中国铁路设计集团有限公司 | Method for intelligently generating construction stage of suspension casting concrete beam bridge |
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| CN202298462U (en) * | 2011-10-21 | 2012-07-04 | 中铁一局集团厦门建设工程有限公司 | Main arch pylon for double-set arch diagonal-tension steel box girder bridge |
| CN103669224A (en) * | 2013-12-26 | 2014-03-26 | 中铁上海工程局有限公司 | Method and steel pipe support for construction of arch tower of inclined arch tower double-cable-plane prestressed concrete cable-stayed bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE202004008620U1 (en) * | 2004-06-01 | 2005-10-13 | Dywidag-Systems International Gmbh | Formation of a corrosion-protected tension member in the region of a deflection point arranged on a support, in particular of an inclined cable on the pylon of a cable-stayed bridge |
| CN204252001U (en) * | 2014-11-07 | 2015-04-08 | 中国市政工程东北设计研究总院有限公司 | A kind of cable stayed bridge and Sarasota thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202298462U (en) * | 2011-10-21 | 2012-07-04 | 中铁一局集团厦门建设工程有限公司 | Main arch pylon for double-set arch diagonal-tension steel box girder bridge |
| CN103669224A (en) * | 2013-12-26 | 2014-03-26 | 中铁上海工程局有限公司 | Method and steel pipe support for construction of arch tower of inclined arch tower double-cable-plane prestressed concrete cable-stayed bridge |
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