Water vapor press decreasing coefficients are different in different time 水汽壓遞減系數(shù)在不同時(shí)間是不相同的。
( 6 ) according to test result and data , combined with water and geological feature of railway tunnel surrounding rock , a suggested table of decrease coefficient about external water load on railway tunnel lining structure is put forward ( 6 )根據(jù)試驗(yàn)結(jié)果和數(shù)據(jù),結(jié)合鐵路隧道圍巖水文地質(zhì)特征、地下水影響情況以及其他行業(yè)有關(guān)資料,初步提出了鐵路隧道襯砌結(jié)構(gòu)外水荷載折減系數(shù)建議表。
Using the above method , the analytic expressions of response and dynamic reliability are got . 3 , on the basis of the above analytic expressions , taking the isolation or seismic decrease coefficient ( the ratio of the standard deviation of the response of structures ) as the optimal objective function , the parameters of the isolation and seismic decrease equipment are optimized . an optimal design method and some useful data are achieved and it can be used in the practical project 3 、在基礎(chǔ)隔震結(jié)構(gòu)、 “加層減震” ( tmd減震)結(jié)構(gòu)隨機(jī)地震響應(yīng)解析表達(dá)式的基礎(chǔ)上,以結(jié)構(gòu)在有、無(wú)隔震或tmd減震裝置情況下的隔震或減震效果指標(biāo)(結(jié)構(gòu)位移響應(yīng)標(biāo)準(zhǔn)差之比)為優(yōu)化目標(biāo)函數(shù),對(duì)隔震和tmd減震裝置的參數(shù)取值進(jìn)行了優(yōu)化,得出了可應(yīng)用于工程實(shí)際的優(yōu)化設(shè)計(jì)方法和一些有用的數(shù)據(jù),可應(yīng)用于指導(dǎo)工程設(shè)計(jì)。
This paper studies the spatial distrihution of water vapor press in the mountain areas of chongqing , with the month average data of water vapor press of climatic reorganized data including 34 meteorological observing stations in chongqing and 4 around it from 1971 to 2000 and 7 meteorological sentries in it from 1997 to 1999 , and 100mx 100m dem of chongqing . according to the theory of mountain climate and basing on gis , it analysises the influencing factors to water vapor press decreasing coefficients in chongqing , and studies the relations among water vapor press longitude latitude and sea level elevation , and founds the water vapor press spatial distribution model in chongqing , and calculates the spatial distribution of the month average and the year average water vapor press in chongqing , and completes the cartographies of the water vapor press spatial distribution of chongqing 本文利用重慶地區(qū)34個(gè)及其周?chē)?個(gè)常規(guī)氣象觀測(cè)站1971 2000年30年和7個(gè)氣象哨1997 1999年3年氣候整編的月平均水汽壓資料,以及重慶地區(qū)100m 100mdem數(shù)據(jù),對(duì)重慶地區(qū)山地水汽壓空間分布進(jìn)行研究根據(jù)山地氣候?qū)W原理,利用gis技術(shù),分析重慶地區(qū)水汽壓遞減系數(shù)的影響因子,研究水汽壓與經(jīng)度緯度和海拔高度等因子的關(guān)系,建立重慶地區(qū)水汽壓空間分布模型,計(jì)算重慶市月平均和年平均水汽壓空間分布,并完成重慶市水汽壓空間分布的制圖。