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Anchorage design and construction method

A construction method and anchoring technology, which is applied in bridge construction, infrastructure engineering, erection/assembly of bridges, etc., to achieve the effect of increasing the design safety factor, less land occupation area, and clear force

Active Publication Date: 2021-07-16
CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no precedent for the application of anchor pile foundation in China, but there are successful applications abroad, such as the Vincent Bridge built in Los Angeles, USA in 1997 (Vincent Thomas Bridg and the new bridge built in California in 2007) New Carquinez Bridge

Method used

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  • Anchorage design and construction method

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specific Embodiment

[0075] Such as Figures 8 to 10 As shown, the project of the present invention adopts the "temporary anchorage method" to carry out the construction of the main bridge superstructure "first cable and then girder". The temporary anchorage 8 is designed by utilizing the original permanent structure pile foundation 1 and cap 4 of the approach bridge. Shatian Town on the east bank is located at pier 20#~21# of the approach bridge, and one is set on the left and right sides; Nizhou Island on the west bank is located on pier 28#~29# of the approach bridge, and one is set on the left and right sides of the approach bridge, and the temporary anchorage 8 is arranged as follows Figure 8 and Figure 9 shown.

[0076] A total of 4 anchorages 8 are designed for the whole bridge. A single anchorage 8 is equipped with 20 Φ1.8m bored piles. The pile lengths are 23.9m and 29.1m. way of construction. And the pile foundation uses the steel casing as an anti-corrosion barrier, and participate...

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Abstract

The invention discloses an anchorage design and construction method which is characterized in that an original permanent structure pile foundation of a bridge is utilized for design, pile foundations are additionally arranged at anchorage positions at the two sides of the bridge, then concrete bearing platforms are poured at the tops of the newly-added structure pile foundations and the permanent structure pile foundations, the pile foundations are embedded into the bearing platforms, the front bearing platform and the rear bearing platform are connected through a straining beam, a main cable passes through the anchorage through the embedded conduit by using the temporary zipper and is anchored on the rear anchor surface, and the anchorage is used for resisting the pulling force of the main cable. The anchorage is arranged in the mode that the permanent and temporary combined pile group foundation and the bearing platform are combined, a conventional gravity type anchorage is replaced, stress is clear, construction is convenient, the manufacturing cost is low, and development of the bridge industry can be promoted.

Description

technical field [0001] The invention relates to the technical field of bridge construction. More specifically, the present invention relates to an anchorage design and construction method. Background technique [0002] Suspension bridge anchors are commonly used as tunnel anchors and gravity anchors. When there is a solid rock formation on the bank of the bridge head, the main cable can be anchored in the rock by means of tunnel anchors or rock anchors; Gravity-type anchorage can be used for anchoring rock formations, and the foundation of gravity-type anchorage generally adopts caisson or caisson type, underground diaphragm wall, shallow buried expansion type, etc. [0003] Compared with the aforementioned foundations, pile foundations are rarely used in anchorage foundations. This is mainly because the pile foundation structure is relatively light, and the mechanism of action is relatively complicated. Designers have no idea whether they can effectively control the displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/14E01D21/00E01D11/02E02D27/12E02D27/14
CPCE01D19/14E01D21/00E01D11/02E02D27/12E02D27/14
Inventor 李晓峰郭万中陈鸣游川肖洒枚龙沈俊成黄剑锋
Owner CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG
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