three-pit system 中文意思是什麼
three-pit system
解釋
三槽法-
The manual introduced the total design and compute the process detailedly about the general design and the running gear design, which divided into altogether three chapter : chapter 1 for total design part of this crane, the main contents is each organization of crane and the metals structure patterns to really settle, and carry on the design to a structure of jib arm and counterbalance system by graphing method, including seeking the point, checking to calculate and school pit ; the second part is a design calculation that circulates the organization, including to circulate the organization to choose the type, the round presses calculation, the stability checking of the whole machine ; the third part is to choose the driving motion version of the hoisting mechanism
說明書詳細的介紹了該型號起重機的總體設計及行走機構設計和計算過程，總共分為三章：第一章為起重機總體設計部分，主要內容是起重機各機構和金屬結構型式的確定，並用作圖法對臂架結構和平衡系統進行設計，包括了機構找點，驗算及校核；第二部分是運行機構的設計計算，包括了運行機構的選型，輪壓計算，整機穩定性校核；第三部分為起升機構的傳動方案選型和設計計算。 -
2. the concept design is the key phase of the first stage of system optimization. the paper emphatically discusses with emphasis several issues difficulty to answer, such as the determination of the soil parameters, the soil pressure and the safety factor and the reliability of retaining structure, summaries and analyses the main geotechnical problems during the excavation on the four familiar geologic strata of saturation soft soil on the class i terrace of the yangtze river, aged - clay, expansive soil and loess and investigates carefully the patterns of deformation and destruction of pit slope in the saturation soft soil, puts forward three basic principles of selecting schemes of retaining structure, namely : facing to the problem, facing to the characteristics of excavation and environment
（ 2 ）概念設計是深基坑工程第一步優化? ?系統（方案）優化設計中的關鍵，文中重點討論了概念設計中的幾個難點問題，如土性參數的確定、土壓力的選取、深基坑工程的安全度和可靠度分析等；總結分析了飽和軟土、老粘性、膨脹土和黃土這四類常見地層條件下的深基坑工程中的主要巖土工程問題，其中重點研究了長江級階地上的飽和軟土深基坑邊坡變形和破壞模式，提出了選擇支護方案的基本原則，即：面向問題、面向基坑特點、面向周邊環境特點。
分享友人