本文選題：腳手架 + 行為模擬試驗��； 參考：《北京交通大學》2017年碩士論文

【摘要】：本論文研究內(nèi)容屬于國家自然科學基金項目(No.51578050):“高大模板支撐體系的防錯機理和對策研究”的一部分。我國由人為錯誤引起的腳手架事故頻發(fā),不僅使企業(yè)效益和人民的生命財產(chǎn)安全產(chǎn)生巨大損失,還引起了社會的廣泛關注。在此背景下,本文主要進行了以下工作:(1)根據(jù)實地調(diào)研的結果,分析給出腳手架安裝過程中,施工人員的兩種常見操作行為—負重行走和敲擊。進行這兩種常見操作行為的模擬試驗,得到模擬人員A、B進行負重行走和敲擊行為時各關節(jié)角度的時程變化數(shù)據(jù),并對數(shù)據(jù)進行分析處理。(2)根據(jù)上述行為模擬試驗的數(shù)據(jù)建立三維人體模型,并將上述模擬試驗得到的人體各關節(jié)角度的時程數(shù)據(jù)作為初始驅(qū)動數(shù)據(jù),進行腳手架上施工人員常見操作行為的仿真分析。本文通過分析研究提出:模擬人員A、B負重行走時,單腳產(chǎn)生的動力荷載模型—F-wb荷載模型。并根據(jù)模擬人員進行負重行走和敲擊時的最大活動范圍,確定腳手架的新尺寸。(3)根據(jù)行為仿真分析給出的腳手架的新尺寸,建立腳手架有限元模型,并根據(jù)F-wb荷載模型得到施工人員行走時產(chǎn)生的動力荷載,將此行走動力荷載施加到腳手架上進行動力分析。研究討論在靜、動力荷載作用下,該腳手架的變形和受力。定義“動力增加效應De”,表示考慮動力效應比未考慮動力效應時,腳手架內(nèi)力的增加程度。通過計算分析可知:考慮動力效應后,腳手架截面的內(nèi)力峰值高于未考慮動力效應時的內(nèi)力最大值,這對結構是不利的。從而得出結論:從結構受力角度考慮,簡單的將動力荷載簡化為靜力荷載進行腳手架的設計計算是不安全的。分析討論單人行走荷載施加在腳手架不同層時,該腳手架的變形、受力情況。進行兩人行走荷載鄰跨施加、隔跨施加在腳手架第五層時,腳手架的動力分析,經(jīng)研究分析得出結論:行走荷載隔跨加載能夠在很大程度上減小腳手架水平橫桿的位移,有利于結構安全,但是對腳手架水平橫桿的內(nèi)力沒有明確的降低效果。
[Abstract]:This thesis is a part of the project No. 51578050 of the National Natural Science Foundation, "study on the error Prevention Mechanism and Countermeasures of large Formwork support system".The frequent accidents of scaffolding caused by human error in our country not only cause great loss of enterprise benefit and the safety of people's life and property, but also cause widespread concern by the society.Under this background, this paper mainly carries on the following work: 1) according to the field investigation result, analyzes and gives two kinds of common operation behavior of the construction personnel in the course of scaffold installation, that is, walking with load and knocking.The simulation tests of these two common operating behaviors were carried out to obtain the time-history data of the angles of the joints during the weight-bearing walking and knocking behavior of the simulators.The data are analyzed and processed. (2) based on the data of the behavior simulation test, a three-dimensional human body model is built, and the time history data of the joint angle obtained from the simulation experiment are taken as the initial driving data.The common operation behavior of the construction personnel on the scaffold is simulated and analyzed.In this paper, the dynamic load model -F-wb load model is put forward by analyzing and researching.According to the maximum range of movement of the simulators, the new size of scaffold is determined. According to the behavior simulation analysis, the new size of scaffold is given, and the finite element model of scaffold is established.According to the F-wb load model, the dynamic load is obtained, and the dynamic load is applied to the scaffold for dynamic analysis.The deformation and force of the scaffold under static and dynamic loads are discussed."dynamic increase effect de" is defined to indicate the degree of increase in the internal force of scaffolding when the dynamic effect is taken into account than when the dynamic effect is not taken into account.According to the calculation and analysis, the peak value of internal force of scaffold cross section is higher than that without dynamic effect, which is disadvantageous to the structure.It is concluded that it is not safe to simply simplify the dynamic load to the static load and calculate the scaffold from the point of view of structural stress.The deformation and force of the scaffold are analyzed and discussed when the single-man walking load is applied on different layers of the scaffold.The dynamic analysis of the scaffold is carried out when two people's walking load is applied by adjacent span and the spacer is applied on the fifth floor of scaffold. It is concluded by research and analysis that the displacement of the horizontal crossbar of scaffold can be reduced to a great extent by loading the straddle of walking load.It is beneficial to the safety of the structure, but the internal force of the horizontal crossbar of the scaffold is not clearly reduced.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU731.2;TU312.1

【參考文獻】

相關期刊論文 前10條

1 王梅;盧熙昌;屠大維;于遠芳;周華;;基于人體動作姿態(tài)識別的機器人仿人運動[J];機械工程學報;2016年21期

2 梁豐;張志利;李向陽;佟昭;;人體運動捕捉過程中的人體下肢動作識別[J];計算機輔助設計與圖形學學報;2015年12期

3 SUN ZhongSheng;WANG Jun;ZHANG YaoTian;SUN JinPing;YUAN ChangShun;BI YanXian;;Multiple walking human recognition based on radar micro-Doppler signatures[J];Science China(Information Sciences);2015年12期

4 宋馬軍;陳健偉;張榮興;朱城偉;;基于SolidWorks & SimMechanics對3-UPU并聯(lián)機器人運動學仿真及控制[J];機床與液壓;2015年21期

5 胡瓊;秦磊;黃慶明;;基于視覺的人體動作識別綜述[J];計算機學報;2013年12期

6 梁松堅;王維;王志泳;劉亞俊;;基于SolidWorks Simulation的人體踝骨力學分析[J];機電工程技術;2013年08期

7 郭利;姬曉飛;李平;曹江濤;;基于混合特征的人體動作識別改進算法[J];計算機應用研究;2013年02期

8 束奇;;基于SolidWorks平臺的人體模型數(shù)字化仿真設計[J];價值工程;2012年04期

9 余曉鑫;田聯(lián)房;王孝洪;毛宗源;賈宇輝;;基于SolidWorks的巡線機器人機械本體設計及越障運動仿真[J];機械設計與制造;2010年08期

10 湯小紅;黃璐;楊岳;;基于SolidWorks的三維人體建模及座椅舒適性分析[J];中南林業(yè)科技大學學報;2010年03期

，

本文編號：1763875