CN112942122A - Tower beam asynchronous construction method of cable-stayed bridge of tower beam consolidation system - Google Patents
Tower beam asynchronous construction method of cable-stayed bridge of tower beam consolidation system Download PDFInfo
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- CN112942122A CN112942122A CN202110157992.9A CN202110157992A CN112942122A CN 112942122 A CN112942122 A CN 112942122A CN 202110157992 A CN202110157992 A CN 202110157992A CN 112942122 A CN112942122 A CN 112942122A
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- 238000007596 consolidation process Methods 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 77
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000009415 formwork Methods 0.000 claims abstract description 27
- 230000009194 climbing Effects 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 238000007788 roughening Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 239000003973 paint Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- 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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Abstract
The invention discloses a tower beam asynchronous construction method of a cable-stayed bridge of a tower beam consolidation system, which comprises the following steps: constructing a lower tower column; constructing a tower column at a tower beam consolidation section, and reserving a steel bar joint and a prestress beam interface; tensioning and grouting a tower column prestress beam at a tower beam consolidation section; climbing the hydraulic climbing formwork, and constructing an upper tower column; erecting a tower beam consolidation section support; and constructing the rest part of the tower beam consolidation section. After the construction of the lower tower column of the cable-stayed bridge of the tower beam consolidation system is completed, the tower beam consolidation section tower column is constructed, the reinforcing steel bars and the prestressed beam connector of the tower beam consolidation section (the rest part) are reserved during the construction, the hydraulic climbing formwork continuously climbs to construct the upper tower column, the detachment and the re-installation of the climbing formwork are avoided, and the construction safety risk is reduced.
Description
Technical Field
The invention relates to the field of infrastructure construction, in particular to a tower beam asynchronous construction method of a cable-stayed bridge of a tower beam consolidation system.
Background
The cable-stayed bridge is a common bridge type of a large-span bridge, and the main tower structure of the cable-stayed bridge is more and more widely applied to structures in numerous bridge construction at home and abroad due to the characteristics of lightening the structural weight and saving materials because of the unique line shape. The tower-beam consolidation system is used as a special type of a cable-stayed bridge, beams, towers and piers are consolidated in three directions, and the system is a complete continuous rigid frame structure with a main beam having elastic supports.
At present, for a cable-stayed bridge structure of a prestressed concrete tower beam consolidation system, a traditional method generally adopts a hydraulic self-creeping formwork to carry out tower column segment construction, a main tower of the cable-stayed bridge structure is constructed in a sequence from bottom to top, namely, the construction process of a lower tower column, a tower beam consolidation section and an upper tower column is carried out, the hydraulic creeping formwork needs to be removed when the main tower segment meets the position of a concrete main beam or a cross beam and the tower column consolidation section, and the creeping formwork is installed again to carry out upper tower column construction after the construction of the main beam or the cross beam at the consolidation section is finished. The hydraulic creeping formwork is dismantled and installed again and reversed, so that the construction period is prolonged greatly, and the safety risk of high-altitude operation is increased. When the cross beam or the main beam variable cross section construction is met, the quality is difficult to guarantee, the construction difficulty is increased, the construction period is generally longer, the construction progress is influenced, and the construction cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a tower beam asynchronous construction method of a cable-stayed bridge of a tower beam consolidation system,
the invention provides the following technical scheme:
a tower beam asynchronous construction method of a cable-stayed bridge of a tower beam consolidation system comprises the following steps:
constructing a lower tower column;
constructing a tower column at a tower beam consolidation section, and reserving a steel bar joint and a prestress beam interface;
tensioning and grouting a tower column prestress beam at a tower beam consolidation section;
climbing the hydraulic climbing formwork, and constructing an upper tower column;
erecting a tower beam consolidation section support;
and constructing the rest part of the tower beam consolidation section.
As an optimal technical scheme of the asynchronous construction method of the tower beam, the steel bar joints reserved in the tower column at the tower beam consolidation section adopt I-level straight thread connection joints with the same section, the connection section is roughened, and a shear groove is formed.
As a preferred technical scheme of the asynchronous construction method of the tower beam, when the tower column at the section of the tower beam is solidified, a plurality of shear grooves are respectively arranged on each layer of the height range of the section of the tower column at intervals, the shear grooves are pre-embedded by adopting a wooden box before the concrete of the tower column is poured, and roughening treatment is carried out after the pouring is finished.
As an optimal technical scheme of the asynchronous construction method of the tower beam, the number of the steel bars is increased by 1.2 times when the tower column at the consolidation section of the tower beam is constructed.
As an optimal technical scheme of the asynchronous construction method of the tower beam, the step of reserving the prestress interface comprises the following steps:
reserving longitudinal and transverse prestressed ducts in the construction range of a tower column at the tower beam consolidation section;
the prestressed duct is formed by adopting a lining plastic pipe, and two ends of the prestressed duct are provided with reserved connectors by adopting connecting pipes which are larger than the diameter of the connected corrugated pipe by one in a sleeved mode.
As a preferable technical scheme of the asynchronous construction method of the tower beam, the tower column at the tower beam consolidation section is constructed by utilizing the hydraulic creeping formwork.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
after the construction of the lower tower column of the cable-stayed bridge of the tower beam consolidation system is completed, the tower beam consolidation section tower column is constructed, the reinforcing steel bars and the prestressed beam connectors of the tower beam consolidation section (the rest part) are reserved during construction, a hydraulic climbing formwork continuously climbs to construct the upper tower column, the main tower section is prevented from meeting the concrete main beam or the cross beam and the tower column consolidation section, the climbing formwork is dismantled and installed again, and the construction safety risk is reduced.
All the steel bar joints reserved in the tower column at the tower beam consolidation section adopt I-grade straight thread connection joints with the same section, 1.2 times of the quantity of steel bars is added to serve as strength reserve, the prestressed duct adopts a hard plastic pipe to serve as a lining pipe, and the duct is well protected in the process.
When a tower column at the tower beam consolidation section is constructed, a plurality of shear grooves are respectively arranged on each layer at intervals in the height range of the section of the tower column, a wood box is used for pre-embedding the shear grooves before the tower column concrete is poured, and roughening treatment is carried out after pouring is finished so as to enhance the rigidity and the cohesiveness of the subsequent tower beam consolidation section.
Asynchronous construction of the tower beam consolidation section and the main tower is realized, the construction period is saved, and the construction cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a lower tower column construction working condition diagram in the tower beam asynchronous construction method according to the embodiment of the invention.
Fig. 2 is a tower-column construction working condition diagram of a tower beam consolidation section in the tower beam asynchronous construction method according to the embodiment of the invention.
Fig. 3 is a construction condition diagram of the remaining sections of the lower tower column in the asynchronous construction method of the tower beam according to the embodiment of the invention.
Fig. 4 is a construction condition diagram of a main beam block in the asynchronous construction method of the tower beam in the embodiment of the invention.
Fig. 5 is a construction condition diagram of the remaining sections of the upper tower column in the asynchronous construction method of the tower beam according to the embodiment of the invention.
FIG. 6 is a construction condition diagram of a tower top closure segment in the asynchronous construction method of the tower and the beam in the embodiment of the invention.
Fig. 7 is a main flow chart of an asynchronous construction method of a tower beam according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1-7, the tower beam asynchronous construction method of the cable-stayed bridge of the tower beam consolidation system of the present invention mainly comprises the following construction sequence (the left side of the figure is marked with the tower column segment number):
firstly, constructing a lower tower column, wherein as shown in fig. 1, a lower tower column 11 is a tower column section in a range below the bottom elevation of a tower beam consolidation section, and a hydraulic creeping formwork 10 is adopted for construction;
constructing a tower column 12 at a tower beam consolidation section, reserving a steel bar joint and a prestress beam interface, and as shown in fig. 2, not constructing a main beam block at the tower beam consolidation section, so as to ensure that the hydraulic climbing formwork 10 can continuously climb upwards and avoid reinstallation after the hydraulic climbing formwork 10 is dismantled;
thirdly, tensioning and grouting a tower column prestress beam at a tower beam consolidation section to ensure the stress of the tower column;
climbing the hydraulic climbing formwork 10 (constructing the rest sections of the upper tower column), as shown in fig. 3, the hydraulic climbing formwork 10 can continuously climb upwards from the tower column 12 of the constructed tower beam consolidation section, and the upper tower column construction with the top mark of the tower beam consolidation section higher than that of the upper tower column is carried out;
erecting a support 13 of the tower beam consolidation section, as shown in fig. 4, wherein the support can be a full scaffold and is used for constructing the rest part of the tower beam consolidation section, such as a main beam block;
sixthly, constructing the rest part 14 of the tower beam consolidation segment (comprising other parts except the tower column 11 of the constructed tower beam consolidation segment, such as a main beam block) and the upper tower column 15 (comprising construction of a tower top closure segment 16), as shown in fig. 5 and 6.
After the construction of the lower tower column of the cable-stayed bridge of the tower beam consolidation system is completed, the tower beam consolidation section tower column is constructed, the reinforcing steel bars and the prestressed beam connector of the tower beam consolidation section (the rest part) are reserved during the construction, the hydraulic climbing formwork continuously climbs to construct the upper tower column, the detachment and the re-installation of the climbing formwork are avoided, and the construction safety risk is reduced.
All the steel bar joints reserved in the tower column at the tower beam consolidation section adopt I-grade straight thread connection joints with the same section, 1.2 times of the quantity of steel bars is added to serve as strength reserve, the prestressed duct adopts a hard plastic pipe to serve as a lining pipe, and the duct is well protected in the process.
When a tower column at the tower beam consolidation section is constructed, 4 shear grooves with the length of 30cm (length) × 30cm (width) × 15cm (depth) are respectively arranged every 1m on each layer in the height range of four sections of the tower column, the shear grooves are pre-embedded by adopting a wood box before the concrete of the tower column is poured, and roughening treatment is carried out after the concrete is poured so as to enhance the rigidity and the cohesiveness of the subsequent tower beam consolidation section.
Asynchronous construction of the tower beam consolidation section and the main tower is realized, the construction period is saved, and the construction cost is reduced.
In order to make the technical solution and advantages of the present invention clearer and more thorough, the present invention is further described in detail with reference to the following specific examples, and the embodiments described herein are only for understanding the present invention and are not intended to limit the present invention.
The construction process flow comprises the following steps: lower tower column construction → tower column reinforcing steel bar binding of the tower beam consolidation section → reinforcing steel bar, prestress interface reservation → tower column template installation of the tower beam consolidation section → concrete pouring and maintenance of the tower column of the tower beam consolidation section → tower column prestress beam tensioning and grouting of the tower beam consolidation section → hydraulic climbing mold climbing (construction of the upper tower column residual section) → reinforcing steel bar binding of the tower beam consolidation section (residual part), template installation and concrete pouring and maintenance → erection of consolidation section bracket, interface roughening, reinforcement lengthening, prestress rib embedding, template installation → tower beam consolidation section and upper tower column construction until completion.
1. Construction of ordinary steel bar
The vertical main ribs of the tower column are connected by straight thread sleeves. The horizontal stirrups are connected by lap welding, and the welding length, the straight thread joint and other properties meet the requirements of relevant specifications. And the other main reinforcements and the stirrups are lengthened by adopting single-side lap welding, the welding length needs to meet the specification and design requirements, and the stirrups are processed according to a hook standard of 135 degrees. After the steel bars are processed in a workshop, the steel bars are transported to the side of the pier through the trestle by using a flat car and are installed by manual cooperation of a truck crane or a tower crane. The reinforcing steel bars are bound on the stiff skeleton for molding, and the vertical stressed reinforcing steel bars of the bridge tower must be kept continuous from bottom to top.
2. I-level joint interface reservation
1) Basic provisions
According to the mechanical bar connection technical code (JGJ107-2016)4.0.1 ", when 100% of the bar joints must be connected in the same connection section, a class I joint should be used. The embedded steel bars of the main tower beam consolidation section adopt the same-section straight thread connection joint, the steel bar joints adopt I-grade joints, the connection section is roughened, and a shear groove is formed.
2) Joint processing
I-level joint processing flow: steel bar blanking → steel bar threading → threading processing and straight thread sleeve appearance inspection → thread end inspection → steel bar connection → sampling, testing → quality inspection.
Adjusting the minimum size of the inner hole of the thread rolling head according to the adjusting test bar required by the specification of the steel bar, selecting a cutter expanding ring according to the specification of the steel bar, and adjusting the diameter size of the stripping rib according to the specified machining size of the thread head. The position of the rolling travel switch is adjusted to ensure that the length of the rolling thread conforms to the regulation of technical Specification for mechanical connection of reinforcing steel bars JGJ-107-.
3) Joint installation construction process
I-level joint installation process: steel bar positioning → steel bar protection cap unscrewing → joint screwing → marking → construction quality acceptance.
The steel bar screw heads are tightly propped against each other at the central position of the sleeve, and when the steel bars are connected, the steel bar screw heads to be connected are screwed into the connecting sleeves with the same specification, and then the steel bar connectors are screwed by using a torque wrench; the single-side exposed thread of the standard type joint after installation is not more than 2 p; and marking with red paint after connection forming to prevent omission. The tower column steel bar joint avoids the areas of the bottom plate and the top plate of the cross beam as much as possible, and the joints are staggered by 35d and are not less than 50 cm. After the steel bars are connected, the tightening torque value meets the requirement.
3. Prestressed tendon joint
1) The construction range of the tower column at the tower beam consolidation section needs to reserve longitudinal and transverse prestressed ducts.
2) The reserved pipeline adopts the inside lining plastic pipe pore-forming, and pipeline both ends head adopts the connecting pipe that the diameter ratio is by a big number of bellows of being connected to overlap soon and reserves the interface, and the length of extension pipe is 30cm, and both ends are sealed tightly with the sticky tape, and other joints department must be twined with adhesive tape or nylon adhesive tape, prevent that the mortar from permeating intraductally, and the inside lining pipe penetrates before concreting. The concrete is frequently and repeatedly drawn out during and after pouring to prevent the leakage of slurry and solidification. And pulling out the core rod after the initial setting of the concrete.
3) The hole is positioned by adopting a # -shaped reinforcing steel bar, and a positioning net piece needs to be reliably welded with the main reinforcing steel bar, so that the corrugated pipe is strictly prohibited from floating upwards. The average length of the straight line section is 1.0m, one positioning steel bar is arranged at each 0.5m of the bend part, and the deviation of the pipeline axis after positioning is not more than 5 mm.
4) The prestress is to pay attention to the arrangement of the extension of the pipeline and the spring rib, and a mud jacking nozzle and an exhaust pipe are reserved. The joint of the pipeline and the anchorage device is ensured to have good sealing and no grout leakage. In order to facilitate subsequent construction, each prestressed tendon is numbered.
4. Form work
The tower beam consolidation section tower column is constructed by utilizing a hydraulic creeping formwork, the inner box adopts a construction mode of combining a wood formwork and a combined steel formwork, and a knife edge steel angle formwork is arranged at the arc angle.
5. Concrete works
The tower column at the tower beam consolidation section is pumped into a mould by a concrete automobile pump and is molded by one-time casting. The casting principle adopts a sectional layered casting method, and the casting sequence is as follows: from bottom to top, from low to high. The top surface is covered by a plastic film and geotextile for watering and curing. Watering, moisturizing and maintaining for at least 7 days.
6. Construction of upper tower column
And after the construction of the tower beam consolidation section is completed, the creeping formwork continues to climb to construct the upper tower column standard section, and a hydraulic creeping formwork system is adopted for construction, wherein the construction method is basically the same as that of the lower tower column.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A tower beam asynchronous construction method of a cable-stayed bridge of a tower beam consolidation system is characterized by comprising the following steps:
constructing a lower tower column;
constructing a tower column at a tower beam consolidation section, and reserving a steel bar joint and a prestress beam interface;
tensioning and grouting a tower column prestress beam at a tower beam consolidation section;
climbing the hydraulic climbing formwork, and constructing an upper tower column;
erecting a tower beam consolidation section support;
and constructing the rest part of the tower beam consolidation section.
2. The tower beam asynchronous construction method of the cable-stayed bridge of the tower beam consolidation system according to claim 1, characterized in that: the steel bar joint reserved in the tower column at the tower beam consolidation section adopts I-grade straight thread connection joints with the same section, and the connection section is roughened and provided with a shear groove.
3. The asynchronous construction method of the tower beam of the cable-stayed bridge of the tower beam consolidation system according to claim 2, characterized in that when the tower beam consolidation section tower column is constructed, a plurality of the shear grooves are respectively arranged on each layer of the height range of the section of the tower column at intervals, the shear grooves are pre-embedded by adopting a wooden box before the concrete of the tower column is poured, and the chiseling treatment is carried out after the pouring is finished.
4. The asynchronous construction method of the tower beam of the cable-stayed bridge of the tower beam consolidation system according to claim 2, characterized in that the number of the steel bars is increased by 1.2 times when the tower column at the consolidation section of the tower beam is constructed.
5. The tower beam asynchronous construction method of the cable-stayed bridge of the tower beam consolidation system according to claim 1, wherein the step of reserving the prestress interface comprises the steps of:
reserving longitudinal and transverse prestressed ducts in the construction range of a tower column at the tower beam consolidation section;
the prestressed duct is formed by adopting a lining plastic pipe, and two ends of the prestressed duct are provided with reserved connectors by adopting connecting pipes which are larger than the diameter of the connected corrugated pipe by one in a sleeved mode.
6. The asynchronous construction method of the tower beam of the cable-stayed bridge of the tower beam consolidation system according to claim 1, characterized in that the tower column of the tower beam consolidation section is constructed by using the hydraulic creeping formwork.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110157992.9A CN112942122A (en) | 2021-02-04 | 2021-02-04 | Tower beam asynchronous construction method of cable-stayed bridge of tower beam consolidation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110157992.9A CN112942122A (en) | 2021-02-04 | 2021-02-04 | Tower beam asynchronous construction method of cable-stayed bridge of tower beam consolidation system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200320A (en) * | 1998-01-19 | 1999-07-27 | Maeda Corp | Execution method of horizontal beam of concrete main tower |
| CN109338900A (en) * | 2018-11-28 | 2019-02-15 | 中国铁建大桥工程局集团有限公司 | A kind of king-tower lower beam construction method |
| CN110042756A (en) * | 2019-04-03 | 2019-07-23 | 中铁大桥局集团有限公司 | Bridge high tower construction method and its construction equipment |
| CN110331668A (en) * | 2019-07-08 | 2019-10-15 | 中铁建大桥工程局集团第一工程有限公司 | A kind of back-cable-free cable-stayed bridge inclined in two-way V-shaped bridge tower construction method |
-
2021
- 2021-02-04 CN CN202110157992.9A patent/CN112942122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200320A (en) * | 1998-01-19 | 1999-07-27 | Maeda Corp | Execution method of horizontal beam of concrete main tower |
| CN109338900A (en) * | 2018-11-28 | 2019-02-15 | 中国铁建大桥工程局集团有限公司 | A kind of king-tower lower beam construction method |
| CN110042756A (en) * | 2019-04-03 | 2019-07-23 | 中铁大桥局集团有限公司 | Bridge high tower construction method and its construction equipment |
| CN110331668A (en) * | 2019-07-08 | 2019-10-15 | 中铁建大桥工程局集团第一工程有限公司 | A kind of back-cable-free cable-stayed bridge inclined in two-way V-shaped bridge tower construction method |
Non-Patent Citations (1)
| Title |
|---|
| 张勇等: "厦漳跨海大桥斜拉桥桥塔塔梁异步施工技术", 《世界桥梁》, no. 05, 28 September 2013 (2013-09-28), pages 18 - 21 * |
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Application publication date: 20210611 |