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Extra-large-span suspension bridge with single-leaf hyperboloid space cable network main cable and its construction method

A hyperboloid and suspension bridge technology, which is applied in suspension bridges, bridge construction, bridges, etc., can solve the problems of not meeting the wind stability requirements, poor lateral stiffness, and poor torsional stiffness of 3,000-5,000-meter long-span suspension bridges , to achieve the effect of solving the stability problem of anti-wind flutter, large structural space rigidity, and large anti-lateral static wind load capacity

Inactive Publication Date: 2014-10-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional vertically parallel cable system suspension bridge has the characteristics of strong vertical bearing capacity and can bear the superstructure weight and vehicle load of the suspension bridge with a span of 3000-5000 meters. However, due to the poor lateral stiffness of the vertically parallel cable system, the resistance The torsional rigidity is poor, which cannot meet the wind resistance stability requirements of the 3000-5000-meter long-span Strait Suspension Bridge

Method used

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  • Extra-large-span suspension bridge with single-leaf hyperboloid space cable network main cable and its construction method
  • Extra-large-span suspension bridge with single-leaf hyperboloid space cable network main cable and its construction method
  • Extra-large-span suspension bridge with single-leaf hyperboloid space cable network main cable and its construction method

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Effect test

Embodiment 1

[0040] The super-large-span suspension bridge of the single-leaf hyperboloid space cable net main cable of the present invention comprises a cylindrical net space main cable 1, a bridge tower 2, a steel ring tower head 3, an elliptical steel ring beam 4, a suspender 5, and a stiffening steel The beam 6, the portal rigid central buckle 7 and the anchorage 8, the main cable 1 in the cylindrical mesh space is composed of several steel wire cables intersecting in space, and its spatial configuration is a closed cylindrical tubular cable formed by the drooping of the single-leaf hyperboloid space cable net. The main cable 1 of the tube mesh space is used as the main cable of the super-long-span suspension bridge, the steel ring tower head 3 fixes the top of the bridge tower 2, and the steel wire cable of the tube mesh space main cable 1 passes through the pre-wired steel ring tower head 3. Holes are left and anchored in the anchorage 8, and the main cable 1 in the tubular network sp...

Embodiment 2

[0042] The construction method of the extra-large-span suspension bridge of the single leaf hyperboloid space cable net main cable of the present invention comprises the following steps:

[0043] Step 1: According to the geological topography, landform conditions and navigation requirements, select the bridge site for the super-long-span Strait Suspension Bridge, excavate the foundation pit, construct the bridge foundation, and build the bridge tower 2 and steel ring tower head 3 of the super-long-span Strait Suspension Bridge and anchor 8;

[0044] Step 2: After erecting the traction cables and constructing the temporary construction catwalk, carry out accurate measurement and lofting according to the equation of the single-leaf hyperboloid, arrange the multi-strand cables crosswise in space, and pass the traction wire cables through the holes reserved in the tower head 3 of the steel ring , anchored in the foundation of the anchorage 8, erect the main cable 1 in the cylindri...

Embodiment 3

[0049] A certain Strait Bridge is a super long-span suspension bridge for highway and railway, with a main span of 3600m and a bridge deck width of 60m. The sub-span of the suspension bridge is 1200m+3600m+1200m. The middle part of the bridge deck is a double-track railway. In order to meet the requirements of wind resistance and stability, a super-long-span suspension bridge with a single-leaf hyperboloid space cable network main cable is adopted. The bridge tower is a gate-post type bridge tower with a height of 420 meters. The bridge tower is a steel-concrete composite structure. Shaped underground continuous wall structure. The anchorage adopts a large-volume reinforced concrete structure, and the prismatic anchorage can make the anchorage embedded in the soil. An elliptical steel ring tower head is set on the top of the bridge tower structure. The major axis size of the steel ring tower head is 120 meters, and the short axis size is 60 meters. The main cable of the susp...

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Abstract

The invention provides an especial-big span suspension bridge of a uniparted hyperboloid space rope net main cable and a construction method thereof. A straight line character of the uniparted hyperboloid is used to change a vertical parallel cable rope system of an original suspension bridge. A thick and heavy centralized cable rope is changed into a dispersive space steel wire cable rope. Multiple strand of steel wire cable ropes are arranged in a cross mode. Space rope net main cable-cross nodes are fixed to form a space cable rope system of the uniparted hyperboloid type. An oval steel strengthening ring beam is arranged. A suspender and a stiffening beam are installed. A gate-type rigidity middle buckle is arranged. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system is built. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system has the advantages of being strong in span capacity, large in space structure rigidity, high in screw frequency ratio, good in wind resistance stability and the like. The novel space main cable system suspension bridge is capable of radically saving the problem of the wind resistance stability of the big span suspension bridge and used for projects of a striding sea connected island. The especial-big span channel suspension bridge of 3000-5000 meters is built.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a construction technology of a long-span suspension bridge, in particular to a super-long-span suspension bridge with a single-leaf hyperboloid space cable net main cable. Background technique [0002] Suspension bridge is the type of bridge with the strongest spanning capacity in the world, and bridges with a span of more than 1,000 meters are basically suspension bridges. In 1998, Japan had built the Akashi Kaikyo Suspension Bridge with a span of 1991 meters, ranking first in the world. In 2009, my country has built the Zhoushan Xihoumen Suspension Bridge with a span of 1650 meters, ranking second in the world. In 2010, the Italian government planned to spend 11.7 billion US dollars to build a suspension bridge over the Strait of Messina with a main span of 3,300 meters in order to connect the traffic between mainland Italy and Sicily. The construction of the Qiongzhou Strait B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D11/02E01D21/00
Inventor 徐文平陈有春石先旺张文明孔维平郭迅张宇峰刘高陈岳
Owner SOUTHEAST UNIV
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