Overall construction technology of a low-tower cable-stayed bridge with two towers and two cable planes
A low-tower cable-stayed bridge and overall construction technology, applied in bridges, bridge construction, infrastructure engineering and other directions, can solve problems such as many ships and occupation, and achieve the effects of high construction quality, simple hardware equipment, and reasonable process design.
Active Publication Date: 2018-07-31
CCCC THIRD HARBOR ENG +2
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b. The main span is 220m, across the Yinghe River, which is busy with water transport, and there are many passing ships; the construction of the two main piers is protected by sandbags to build island cofferdams, occupying part of the riverside, and needs to meet the navigation standards
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[0034] The present invention will be further described below in conjunction with accompanying drawing.
[0035] see figure 1 and figure 2 , the double-tower double-cable plane low-tower cable-stayed bridge constructed by the present invention has two main piers 100 and two side piers 200; The lower connection and pile group foundations 102, 202; the bridge towers 300 on the two main piers 100 are reinforced concrete structures; the longitudinal lower part of each bridge tower 300 has a longitudinal tie beam 301 in an "A" shape, and the horizontal lower part has a door-shaped arch The support beam 302, the upper part has an upper beam 303 in an "H" shape; each bridge tower 300 is divided into twelve sections for construction, the first section 311 is the tower seat, and the first section 311 to the fourth section 314 It is a horizontal double-door arched lower tower pier, and the fifth section 315 to the twelfth section 322 are upper tower columns; the longitudinal tie beam ...
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The invention discloses an overall construction technique of a double-tower double-cable-plane extradosed cable-stayed bridge. The overall construction technique comprises a pile foundation construction procedure, a bearing platform construction procedure, a lower tower pier construction procedure, an upper tower pillar construction procedure, a side pier construction procedure, a girder construction procedure, a stayed-cable construction procedure and a bridge girder auxiliary project construction procedure. When the bearing platform construction procedure is conducted, steel plate pile construction, cover concrete construction and pile head treatment are sequentially conducted firstly, and then bearing platform measuring and positioning, rebar construction, first-stage bearing platform template installation and concrete pouring, second-stage bearing platform and lower tower pier first-section rebar construction, template installation and concrete pouring are conducted in sequence; and when the lower tower pier construction procedure is conducted, a hydraulic self-climbing template is adopted for construction; when the side pier construction procedure is conducted, steel plate pile cofferdam is adopted by side pier bearing platforms for construction, and shaping steel moulds are adopted by pier bodies for construction; when the girder construction procedure is conducted, cantilever hanging baskets are adopted for construction; and during girder construction, the stayed-cable construction procedure needs to be synchronously conducted. According to the construction technique, procedure design is reasonable, and construction is convenient.
Description
technical field [0001] The invention relates to an integral construction technology of a low-tower cable-stayed bridge with two towers and two cable planes. Background technique [0002] The total length of the short-tower cable-stayed bridge across the Yinghe River is 410m, and the main span is 94.2+220+94.2m. The main bridge is generally a prestressed concrete short-tower cable-stayed bridge with twin towers and double cable planes. A semi-floating structural system with tower-beam separation is adopted. The low-tower cable-stayed bridge has two main piers and two side piers; the two main piers and the two side piers are both of two-stage type, and both of them have a socket and a pile group foundation. The two main piers are located in the main channel, and part of the caps of the two side piers are embedded in the river bank. The bridge towers on the two main piers are in the shape of "A" in the longitudinal direction, the lower part of the transverse direction has th...
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IPC IPC(8): E01D21/00E01D21/10E02D5/34E02D27/14
CPCE01D21/00E01D21/10E02D5/34E02D27/14
Inventor 黄湘郑建平张俊波唐德兴
Owner CCCC THIRD HARBOR ENG