全站儀在麵積測量中的應用
全站儀具有角度測量、距離(斜距、平距)測量、高差測量、三維坐標測量、導線測量、jiaohuidingdiancelianghefangyangceliangdengduozhongyongtu。neizhizhuanyongruanjianhou,gongnenghaikejinyibutuozhan。suizhekexuejishudebuduanfazhan,quanzhanyideshiyongyixiangdangpubian,weileshiquanzhanyizaishengchanzhongfahuigengdadexiaoyi,chongfenliyongqitigongdegongneng,xiamianjieshaoquanzhanyimianjiceliangdejibenfangfagongdajiacankao。 路燈的布置包括:路燈間距、路燈安裝高度及燈具亮度。路燈的合理布置對提高照明效果起著關鍵作用。
在綜合考慮路況、路麵反射特性的同時,應充分發揮照明器具的配光特性,使布局盡量合理。在設計中,燈杆的設置要根據城市道路的寬度、綠化隔離帶的設置確定,一般采用單側布置、雙側對稱布置、雙側非對稱布置、中(zhong)心(xin)對(dui)稱(cheng)布(bu)置(zhi)等(deng)方(fang)式(shi)。市(shi)政(zheng)道(dao)路(lu)照(zhao)明(ming)兼(jian)有(you)景(jing)觀(guan)要(yao)求(qiu),一(yi)般(ban)宜(yi)選(xuan)用(yong)較(jiao)為(wei)美(mei)觀(guan)的(de)燈(deng)型(xing),但(dan)首(shou)先(xian)應(ying)滿(man)足(zu)技(ji)術(shu)上(shang)的(de)要(yao)求(qiu)。在(zai)以(yi)往(wang)的(de)市(shi)政(zheng)道(dao)路(lu)照(zhao)明(ming)設(she)計(ji)中(zhong),都(dou)選(xuan)用(yong)拔(ba)梢(shao)鋼(gang)杆(gan),內(nei)外(wai)熱(re)鍍(du)鋅(xin)表(biao)麵(mian)噴(pen)塑(su),燈(deng)杆(gan)壁(bi)厚(hou)不(bu)小(xiao)於(yu)4 mm,具有較強的抗彎能力。光源選用發光效率高、使用壽命長、透霧性好的高壓鈉燈,燈具選用截光或半截光、防眩光、能效利用率高的優質產品,防護等級一般選用 IP65,整流器、電容器觸發元件均裝於燈杆內。
目前大部分城市的道路建設是分階段、分(fen)部(bu)門(men)完(wan)成(cheng)的(de)。一(yi)般(ban)先(xian)進(jin)行(xing)的(de)是(shi)城(cheng)市(shi)道(dao)路(lu)建(jian)設(she),由(you)市(shi)政(zheng)部(bu)門(men)完(wan)成(cheng),其(qi)次(ci)完(wan)成(cheng)的(de)是(shi)各(ge)種(zhong)配(pei)套(tao)設(she)施(shi),包(bao)括(kuo)服(fu)務(wu)設(she)施(shi)和(he)信(xin)息(xi)設(she)施(shi)。目(mu)前(qian)街(jie)道(dao)上(shang)常(chang)見(jian)的(de)配(pei)套(tao)設(she)施(shi)有(you)電(dian)話(hua)亭(ting)、公廁、果皮箱、交通標誌等,而缺少座椅、指示牌、鍾表、閱yue報bao亭ting等deng設she施shi,遠yuan遠yuan不bu能neng滿man足zu人ren們men的de使shi用yong需xu要yao。因yin此ci這zhe些xie設she施shi的de安an裝zhuang應ying與yu人ren行xing道dao的de改gai造zao同tong步bu進jin行xing,一yi步bu到dao位wei,避bi免mian二er次ci開kai挖wa造zao成cheng資zi金jin浪lang費fei及ji環huan境jing影ying響xiang。道dao路lu設she計ji是shi市shi政zheng道dao路lu建jian設she中zhong的de一yi個ge重zhong要yao組zu成cheng部bu分fen。
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