Pre-pressing method for bridge bracket

A technology of preloading and bridges, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of time-consuming, unreasonable loading sequence design, and great harm, so as to shorten the preloading time and simplify the loading or unloading process. , to ensure the effect of reliability

Active Publication Date: 2018-11-16
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD +1
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing bracket preloading method is cumbersome and time-consuming, and the design of the preloading position of the bracket and the loading sequence of the preloading blocks is unreason

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
  • Pre-pressing method for bridge bracket
  • Pre-pressing method for bridge bracket
  • Pre-pressing method for bridge bracket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0037] The invention provides a kind of preloading method of bridge support, and described preloading method comprises the steps:

[0038] (1) Calculate the loading position and quantity of the pre-compression block according to the area of ​​the pre-compression surface of the support, and determine the observation point for observing the elastic deformation of the support during loading.

[0039] The support pre-compression surface can be the top surface and / or bottom surface when the support is placed horizontally, and multiple pre-com...

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 relates to the field of bridge construction, in particular to a pre-pressing method for a bridge bracket. The method comprises the following steps of calculating the loading positions and quantity of pre-pressing blocks according to the area of a pre-pressing surface of the bracket, and determining observation points for observing the elastic deformation condition of the bracket during loading; placing the pre-pressing blocks on the pre-pressing surface of the bracket according to a calculation result, symmetrically loading the pre-pressing blocks from the center line of the bracket to the two sides of the bracket, and keeping the loading rate consistent; conducting stage-by-stage loading on the pre-pressing surface of the bracket, after one stage of loading is completed, calculating numerical values of all the observation points, when loading is conducted on the last stage, conducting static pressure observation for 4 h or above, and then calculating the numerical valuesof all the observation points; after two measurement results before and after the last stage of loading are stable, symmetrically unloading the pre-pressing blocks stage by stage, after each stage ofunloading is completed, recording the numerical values of all the observation points, and comparing the numerical values with loading records. Therefore, pre-pressing data of the bracket is acquiredquickly and accurately, the bearing capacity and stability of the structure are detected, and preparation is made for subsequently adjusting the bracket.

Description

【Technical field】 [0001] The invention relates to the field of bridge construction, in particular to a preloading method for bridge supports. 【Background technique】 [0002] With the rapid development of my country's infrastructure construction, a large number of cast-in-place bridges need to be erected. In bridge construction, it is necessary to preload the support with heavy objects in advance to ensure the reliability of the support and understand the elastic deformation of the support during construction. , and eliminate the inelastic deformation of the bracket, and test the bearing capacity and stability of the structure. Therefore, the preloading of the bracket is an indispensable construction process after the bracket is erected. [0003] The existing bracket preloading method is cumbersome and time-consuming, and the design of the preloading position of the bracket and the loading sequence of the preloading blocks is unreasonable, and the preloading data of the brack...

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): E01D21/00
CPCE01D21/00
Inventor 刘怀刚王海伟高世强唐代新刁先觉肖向荣夏江南檀兴华陶坡吴曼葛纪平
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap