




版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、1 1ASCE Earth and Space Conference, 2016 Reporter:Institution:Date:3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature ComponentOutline1Introduction2The Establishment of the 3D Geospatial Function monitoring model3The Solution of the 3D Geospatial F
2、unction monitoring model4Case Study3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component Part1 Introduction 1 IntroductionThe mon
3、itoring model of arc dam deformation based on monitoring data provides basis for the evaluation of arc dam safety. In the traditional monitoring model of arc dam deformation, water level component, temperature component, and timelines component are used to reflect arc dam deformation as follows:Wher
4、e is the water level component, is the temperature component, and is the timelines component. =+(1)HT HT3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component 1 IntroductionThe water level component:Where is the coefficient of water level and
5、 is the water level. The timeliness component: Where and are the regression coefficients and is the time factor from the starting day to the analyzing day 41=(2)iHiia HiaH12ln(3)cc1c2c 1 Introduction3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperatur
6、e Component 1 Introduction3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature ComponentFor the temperature component, it has two types:(1) Since the temperature change in arc dam lags behind the environmental temperature, and the temperature compone
7、nt has the linear relationship with the temperature of concrete. The linear combination of multi previous average temperature is used to show the temperature component as follows:Where is the regression coefficient and is the average temperature in the previous days. For arc dams, i =1,2,3,4. (2) Co
8、nsidering that the inner temperature of arc dam shows the simple harmonic motion with the environmental temperature and lags behind with the environmental temperature, and the temperature component has the linear relationship with the temperature of concrete. The temperature component is expressed a
9、s the linear combination of harmonic function with different periods:Where and are the regression coefficients, and is the time from the started day to the analyzing day, often equals to 2. 11121(, ,)(4)mTiii ibTii imibiT212122sincos(5)365365mTiiiititbb1ib2ibt 1 Introduction3D Geospatial Function Mo
10、nitoring Model of Arc Dam Deformation Based on the Improvement of Temperature ComponentTherefore, the traditional monitoring model of arc dam deformation is given as follows: orHowever, they are difficult to depict the deformation of arc dam caused by temperaturevariation comprehensively.For example
11、, the linear expansion coefficient of concrete when the temperature is around 0 is not fixed and it increases obviously when the concrete is in the frozen state, which is difficult to be depicted by the linear combination. Besides, only the influence of the environmental temperature and water on the
12、 temperature component is considered, and the influence of the water level on the temperature is not considered. However, the temperature component induced by different water levels are different, and the average air temperature or harmonic functions can not be used to depict the special changing pr
13、ocess when the water level increases from the lowest to the normal water level. Therefore, it is of great significance to improve the temperature component. 1 Introduction3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component114121=lnmiiiiiii
14、a Hb Tcc2412121122=sincosln365365miiiiiiitita Hbbcc Part2 The Establishment of the 3D Geospatial Function model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature ComponentAiming to the under-fitting problem and the linear form of temperature compon
15、ent in traditional monitoring model mentioned above, Integral concept is used to improve the temperature component:Where A is constant, is the coefficient of temperature component.And we expand it according to bivariate polynomial as follows: Three types of components for are used to reflect the dis
16、tribution of temperature component in time and space, in which harmonic function and linear function of time and linear function of reservoir water level H are included. The harmonic function, the linear function of time and the linear function of reservoir water level reflect the annual cycle chang
17、e rule of water temperature on air temperature, continuous change law of water temperature with the change of time and the spatial distribution of air temperature and water temperature in the dam body foundation. 0( ) ( )(6)TiitAb t T t d11( )(7)lmijTijijb ft T( )ib t( )f t 2 The Establishment of 3D
18、 Geospatial Function Model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature ComponentAfter the substitution of the three functions into equation (2) , the following equation is obtained:Where is constant, - are coefficients of polynomials, is the
19、changed temperature relative to the started monitoring day, is the up water depth, , , and are the numbers of influencing factors which are often chosen 2-3.Then space vectors is adopted to establish the 3D geospatial function monitoring model, in which the deformation of dam is the function of load
20、 set and space coordinates:Where is the reservoir water component, is the temperature component, and is the timeliness component. 3112111234011111122sincos(8)365365llmlmmjijijTijijijijijijijititbbTbt TbH Tb 0b1ijb4ijbTh1m1l2l3l 123112233, , , , ,=, , ,+, , ,+, , ,(9)=, ,+, ,+, ,f H Tx y zfH x y zfT
21、x y zfx y zff Hgx y zff Tgx y zffgx y z1, , ,fH x y z2, , ,fT x y z3, , ,fx y z 2 The Establishment of 3D Geospatial Function Model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component3D Geospatial function monitoring model based on the impr
22、ovement of temperature component: 1132114330121,011 ,033341=1 ,011 ,022sincos365365(12)lmilmnjlmnilmnijlmnijlmnil m nijl m nllmmijlmnijlmnijlmnijlmnijl m nijl m nititaaH x y zbbT x y zbt T x y zbH T x y z 2 The Establishment of 3D Geospatial Function Model3D Geospatial Function Monitoring Model of A
23、rc Dam Deformation Based on the Improvement of Temperature Component Part3 The Solution of the 3D Geospatial Function model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component(1) Based on stepwise regression method, the statistical model is
24、 built up and the factors which influence deformation prominently are selected. The regression coefficients of the prominent factors are treated as the control variable and the definition domain of the coefficients of influencing factors is estimated through the stepwise regression calculation, whic
25、h is conducted to avoid the poor efficiency caused by high randomness of the initial population. (2) Determining the fitness function Based on least square method, the objective function is obtained as follows:Where is the monitored deformation, is the calculated deformation, is the norm, is the num
26、ber of measured values. 3 The Solution of 3D Geospatial Function Model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component1 221minminmin(13)niiifdddd=骣琪=-=-琪桫 d 1,2,in(3) Optimal calculation based on the quantum genetic algorithm After dete
27、rmining the fitness function, coding scheme, genetic factor, and the end condition are selected to determine the optimal parameters in equation . The coefficients of the influencing factors are transformed into the decision variable and the optimal calculation was conducted according to quantum gene
28、tic algorithm. Then the obtained coefficients of the influencing factors were substituted into the monitoring model, and the 3D geospatial function monitoring model is obtained. 3 The Solution of 3D Geospatial Function Model3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the
29、Improvement of Temperature Component Part4 Case Study3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component 4 Case Study3D Geospatial Function Monitoring Model of Arc Dam Deformation Based on the Improvement of Temperature Component A concrete arch dam which locates in Yunnan
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 利用改进的蜣螂优化算法结合深度学习技术进行高压断路器故障诊断的研究
- 服务设计思维在茶饮体验系统中的应用研究
- 体育机构薪酬管理办法
- 江西房产抵押管理办法
- 硬件加速纹理合成技术-洞察及研究
- 新能源汽车实训室建设方案及其应用效果评价
- 家具定制行业最佳实践指南
- 校园二手市场商业模式规划
- 消防事故隐患排查治理制度
- JJF 2270-2025车载式道路交通标线逆反射测量仪校准规范
- 淹溺诊疗规范内科学诊疗规范诊疗指南2023版
- PremiereProCC视频剪辑基础教程PPT完整版全套教学课件
- 新教材北师大版高中英语选择性必修第一册全册各单元学案(单词短语句型写作等知识点汇总)
- 镀锌板国家新标准规定
- 《电工学》“课程思政”教学设计案例
- 数字时代的商务英语写作知到章节答案智慧树2023年对外经济贸易大学
- 检验科沟通技巧及其它
- 2022年安徽大学科研助理(校聘)招聘60人笔试备考题库及答案解析
- 四年级阅读训练概括文章主要内容(完美)
- YY/T 0995-2015人类辅助生殖技术用医疗器械术语和定义
- GB/T 19352.1-2003热喷涂热喷涂结构的质量要求第1部分:选择和使用指南
评论
0/150
提交评论