Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-inclination anchoring method for water bored piles for main trestle construction

An anchoring method and bored pile technology, applied in sheet pile walls, infrastructure engineering, construction, etc., can solve the problem of easy tilting of bridge piers, and achieve good rotation and loosening, good self-rotation torque, and good resistance to water wave impact. Effect

Active Publication Date: 2022-01-07
ANHUI HIGHWAY BRIDGE ENG CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter what kind of geology, the long-term influence of water buoyancy, spray and water flow makes the pier that only relies on the support force of the pile bottom prone to tilt, which is a hidden danger in the project

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-inclination anchoring method for water bored piles for main trestle construction
  • Anti-inclination anchoring method for water bored piles for main trestle construction
  • Anti-inclination anchoring method for water bored piles for main trestle construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to Figure 1-3 , a method for anti-tilt anchoring of bored piles on water for main trestle construction, comprising the following steps:

[0041] Step 1. Presetting of anchor piles:

[0042] Select two adjacent bored piles 1, and the bottom ends of the two bored piles 1 pass through the sand layer and drill into the rock layer 1m deep, the tops of the bored piles 1 are higher than the water surface, and the tops of the bored piles 1 There are prefabricated tendons 2, and the prefabricated tendons 2 are corrected and are all perpendicular to the top surface of the bored pile 1;

[0043] At the continuous midpoint position between two groups of bored piles 1, hammer and sink the casing 3 so that the top of the casing 3 is at the same height as the top of the bored pile 1, and the bottom of the casing 3 reaches the sand layer At the junction with the rock layer, lower the drill bit along the inside of the casing 3, drill into the rock layer for 2-3m, and then expan...

Embodiment 2

[0060] On the basis of embodiment 1, the number of bored piles 1 can be set to four, the connecting beam 4 can be changed into a square load-bearing platform, and the four bored piles 1 can be arranged at the four corners of the load-bearing platform. Set the through holes of prestressed tendons 5 at the four corners of the periphery of the hole grouting pile 1, set the cylindrical pier 7 at the center of the upper surface of the load-bearing platform, and change the through holes of the cylindrical pier 7 into four groups of circular distribution, and the prestressed tendons 5 is changed to two, and both are wound around the anchor rod 6, and the two ends of each prestressed tendon 5 are set at one side of the load-bearing platform to form a cross cable-stayed structure;

[0061] According to the similar anchoring method, the tensioned anchoring structure is formed, and the tops of the four bored piles 1 are respectively connected through an anchor rod 6 and two prestressed te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an anti-inclination anchoring method for water bored piles for main trestle construction. The anti-inclination anchoring method comprises the five steps of anchor pile presetting, prefabricated connecting beam suspension setting, connecting beam and anchor rod butt joint, anchor rod bottom end pouring method anchoring and prestressed tendon tensioning and fastening. According to the anti-inclination anchoring method, through a pouring anchoring structure of anchor rods, the bottom ends of the anchor rods are implanted into a rock layer; the anchor rods and connecting beams are additionally arranged between the bored piles, so that an integrated fastening force is formed at the top ends between the two sets of bored piles, and the water wave impact resistance is better compared with that of a single bored pile; and through a prestressed tendon tensioning mode, strong tension is formed at the two ends of a cylindrical pier and the connecting beams, so that the autorotation torsion of the anchor rods is better resisted, the anchor rods are not prone to rotating and loosening, and finally a stable two-pile connecting and permanently fixing structure is formed. The structure is durable, capable of resisting violent wind waves and suitable for complex hydrological working condition environments. The anti-inclination anchoring method can be extended to a rapid building mode of a multi-pile supported water simple platform and is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an anti-tilt anchoring method for above-water bored piles used in the construction of a main trestle bridge. Background technique [0002] The trestle bridge construction method is generally adopted for bridge projects spanning wide river courses. The so-called trestle is a temporary bridge that directly serves the construction by driving lifting and transporting machinery. The construction trestle generally consists of three parts: piers, girder span structure and bridge deck system. [0003] In recent years, the piers, side-span platforms, and cofferdams of steel trestle bridges are generally poured with bored piles, friction casings are generally used for underwater soil and sand layers, and bored piles that are directly drilled into the rock formation are generally used for underwater rock formations. However, no matter what kind of geology, the long-term influen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E02D5/34E02D27/12E02D27/52E02D27/42
CPCE02D5/34E02D27/12E02D27/42
Inventor 姚成玉徐智勇钱冬冬金鑫刘佳王锡志徐刚汪国庆杨志华
Owner ANHUI HIGHWAY BRIDGE ENG CO LTD