建筑外文翻譯---全站儀在公路導(dǎo)線和中線測量中的應(yīng)用-建筑結(jié)構(gòu)-免費(fèi)閱讀
【正文】 s Republic of industry standards. JTJ 061 99 investigation norms Road. Beijing: People39。另外非常重要的一點(diǎn)是 :全站儀搬站的時(shí)間最好選在直線段上 ,這樣的好處是不讓中線組等著儀器搬站而停工。在山區(qū)和路線上建筑物障礙物較多時(shí) ,有時(shí)搬一次儀器也就放一二個(gè)點(diǎn) ,往往不再另外搬站 , 而是用移動(dòng)參照點(diǎn)和測參照點(diǎn)相結(jié)合的方法 ,每次都取得了省時(shí)、省力、又滿足精度要求的結(jié)果。 ,結(jié)果當(dāng)然是錯(cuò)誤的。如在一個(gè)較長且兩側(cè)房屋很多的平曲線處 ,后視人員在老路曲線上測得 12 個(gè)點(diǎn)來控制曲線 ,在內(nèi)業(yè)處理時(shí)發(fā)現(xiàn)該位置設(shè)復(fù)曲線是最佳方案 ,避免了設(shè)一個(gè)曲線半徑造成拆遷多而且線形不理想的失 誤。 注意應(yīng)用國家控制點(diǎn)及其三維坐標(biāo) 在用坐標(biāo)法測點(diǎn)前 ,盡量找到國家控制點(diǎn)和這些控制點(diǎn)的三維坐標(biāo) ,通過和這些控制點(diǎn)的聯(lián)測 ,不僅可以檢驗(yàn)自己的測量精度 ,而且在誤差允許范圍內(nèi)可以通過這些坐標(biāo)進(jìn)行平差 ,使測量精確度更高。 點(diǎn)的設(shè)置應(yīng)兼顧放中線的需要 在設(shè)點(diǎn)時(shí) ,不僅應(yīng)設(shè)路線控制導(dǎo)線點(diǎn) ,即轉(zhuǎn)點(diǎn) ,也應(yīng)為放中線作準(zhǔn)備 ,在路線上通視條件好、地勢較高處可以布設(shè)一些架儀器的點(diǎn) ,這樣做的好處是在放中線時(shí)有了更多的選擇機(jī)會(huì) ,不必為增設(shè)架儀器點(diǎn)而多次讓儀器轉(zhuǎn)站。 導(dǎo)線測量應(yīng)注意的問題 用全站儀配合打?qū)Ь€也有一些需要特別注意的地方 ,否則可能引起較大誤差甚至導(dǎo)致返工。 4） 全站儀測高程有它的局限性 ,其測高程的誤差主要為豎直角觀測誤差、測距誤差、儀器高與棱鏡高量測誤差 ,而這 3 種誤差中豎直角觀測誤差的影響最大 ,只能采取適當(dāng)?shù)拇胧﹣硖岣哂^測 精度 ,如采用覘牌代替棱鏡作為照準(zhǔn)目標(biāo)、適當(dāng)增加測回?cái)?shù)、短距離傳遞高程、仔細(xì)量取儀器高和棱鏡高等。 全站儀測高程功能的應(yīng)用技巧 全站儀雖然測水準(zhǔn)程序比較煩瑣 ,而且精度不高 ,但有時(shí)候測高程的功能可有效發(fā)揮。我們用這 種方法在省道豫 23 線南陽市境鄧州至孟樓段 (平原微丘區(qū) )二級(jí)公路改建工程的中線測量中 ,創(chuàng)出了一天敷設(shè) 10km 的速度。s Traffic Press, 1999 [2] Nie so. Total Station with the measurement of highgrade highways. Beijing. People39。, the result of course is wrong. 4） Total height measurement has its limitations, the measurement error of the main elevation of the observation error for the vertical angle, ranging error, apparatus, high With high measurement error of the prism, which is three kinds of errors in vertical angle observation the impact of the error the most, only to take appropriate measures to improve the accuracy of observation, such as the use of spy license allowed the goal to replace the prism as the appropriate measure to increase the number of shortdistance transmission of elevation, carefully check the amount of high equipment and higher prism. Under normal circumstances, traversing the measuring point in the elevation values for reference only, and can not be used as the standard of measurement. 2 Total Station in the center line Measurement up a station in the location of choice 2021 級(jí)土木工程專業(yè)英語科技 文獻(xiàn)翻譯 8 As far as possible to select those higher, depending on the conditions of a good pass, you can see more points in the online position. We have just started using Total Station, when not paid much attention to this point, the results tend to move off station More, not only affect the progress, but also accuracy. Especially in mountainous areas, such as on top of a mountain we can see a few kilometers around the location in the pile, and along both sides of the road often requires several stations put uo a station can only be deposited end of this set up the center line. Another example is the middle of the mountains edge streamlet actinomycete line, as the horizontal alignment is often not ideal, many hills to block line of sight, always need to stop several times to move, if we choose to route the other side of the river the mountain, The ground floor or the roof of the residents do, such as the location for put up a station can be highly effective. points fewer processing Total Station, as the barrier encountered by the laying of the center line, in the case of small points should be taken from the machines can see the most recent release Points (generally not in the line of points) for the reference approach. Routes in the mountains and the obstacles we
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