Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Deepwater long and large trestle structure design method

A technology for structural design and trestle bridges, which is applied in the field of structural design of long trestle bridges in deep water. It can solve the problems of inconvenient steel pipe pile bending stability checking and the inability to directly calculate the calculation length of steel pipe piles, so as to achieve accurate and reliable calculation results and reduce labor costs. The effect of processing workload and high model accuracy

Pending Publication Date: 2022-02-25
CHINA RAILWAY NO 5 ENG GRP MECHANICAL ENG +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the "m method" cannot be used to directly calculate the "calculated length" of the steel pipe pile because there is no "virtual embedding point", and it is not convenient to check the bending stability of the steel pipe pile

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
  • Deepwater long and large trestle structure design method
  • Deepwater long and large trestle structure design method
  • Deepwater long and large trestle structure design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] like figure 1 As shown, a kind of deep-water long trestle structure design method is disclosed in this implementation, comprising the following steps:

[0055] Step 1: Carry out the overall layout of the trestle bridge, where the width of the trestle bridge is the maximum unfolded width of the tracked vehicles to pass plus the safety distance, the standard span of the trestle bridge ranges from 12m to 15m, and the single trestle section consists of 4 Composed of ~6 standard spans, the elevation of the single trestle section is symmetrically arranged, the trestle may include a curved trestle section, and the plane of the curved trestle section is arranged according to a broken line;

[0056] Step 2: Select any single-connected trestle section, use Midas Civil to establish the finite element model of the superstructure of the single-connected trestle section, apply the load of the superstructure, carry out the moving load analysis, static analysis and buckling analysis of...

Embodiment 2

[0065] like figure 2 As shown, a large bridge across the bay has a total length of 862.0m, the plane part is a straight line, and the part is a curve with a radius of 1800m. 41.0m, the theoretical minimum tidal level is -3.58m, and the design flow velocity is 2.3m / s. The bridge pile foundation mainly passes through silt, silty clay, coarse sand, pebbles, residual sandy cohesive soil, and sandy soil-like strongly weathered granite porphyry 7 types of soil layers including , fragmented strongly weathered granite porphyry. In order to facilitate the construction of the bridge foundation cap and the cross-strait traffic, a temporary trestle bridge needs to be designed and built.

[0066] Due to the large water depth, rapid flow velocity and high tidal range at the bridge site, and the influence of typhoon, the stress situation is extremely complicated. There are many factors to be considered in the design of the temporary trestle structure, especially the design of the substruct...

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 a deepwater long and large trestle structure design method, which combines three software platforms of CAD (Computer Aided Design), MidasCivil and ANSYS, and comprises the following steps that: firstly, single-linkage upper structure calculation is carried out by adopting the MidasCivil to obtain the most unfavorable bearing reaction of the upper structure; then, finite element models of all the lower structures of the full bridge are established through ANSYS, pile-soil interaction of the trestle is simulated through soil springs, loads of the lower structures are applied, and the lower structures of the full bridge are calculated; the maximum node of the bidirectional bending moment vector sum in the buried section of each steel pipe pile serves as an equivalent built-in point, the calculation length of each steel pipe pile is calculated, and the bidirectional bending overall stability of each steel pipe pile is calculated through APDL; and the pipe diameter and the wall thickness of each steel pipe pile are optimized and adjusted according to the calculation result. According to the method, modeling and analysis efficiency is high, program universality is high, batch export and calculation of modeling data can be achieved, and the manual processing workload is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and construction, and relates to a construction temporary structure of a deep-water bridge, in particular to a structural design method of a deep-water long trestle bridge. Background technique [0002] For underwater bridge projects across bays, rivers, lakes, reservoirs, etc., temporary trestles need to be set up to facilitate the transportation and passage of construction materials and mechanical equipment. The structural composition of the temporary trestle is generally as follows: the bridge deck adopts fabricated stiffened steel bridge deck, the horizontal distribution beam adopts I-beam, the longitudinal main girder adopts Bailey beam, the load-bearing beam is set under the Bailey beam, and the steel pipe pile foundation is set under the load-bearing beam . Under the loads of vehicles, braking force, impact force, wind load, water pressure, wave force, tidal force and impact forc...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F119/02G06F119/14
CPCG06F30/13G06F30/23G06F2119/02G06F2119/14
Inventor 伍彦斌朱杰兵吴建亮黄宜伟涂涛康宇胡云峰莫利民
Owner CHINA RAILWAY NO 5 ENG GRP MECHANICAL ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com