eccentric wall 中文意思是什麼
eccentric wall
解釋
管壁厚薄不勻-
Along with the progress of drilling technology, many new types of bha such as steering motor assembly, dropping assembly with eccentric bend sub, dropping assembly with flexible connection are developed based on common building, dropping and holding assemblies. for using these bha, a new mathematical model is put forward for 3d static analysis of these types of bha under small deflection. and its weighted residual solution is given. the mathematical model includes ( 1 ) differential equations ; ( 2 ) boundary conditions at drill bit, stabilizer, bend angle, diameter change, tangential point and borehole wall ; ( 3 ) lateral forces and deflection angles of bit. the software based upon this method runs well
為了更好地應用各種新鉆具，建立了適用於對普通下部鉆具、導向鉆具、帶偏心彎接頭和柔性接頭的下部鉆具進行三維小撓度靜力學分析的數學模型，包括（ 1 ）微分方程； （ 2 ）鉆頭、穩定器、彎角、變截面、切點和井壁的邊界條件； （ 3 ）鉆頭的側向力和鉆頭轉角.給出了該模型的加權余量解.用該方法編寫的軟體應用效果良好 -
Several suggestions for amending the defects of pk - pm software were also put forward. moreover, the formula and measured target were proposed through analyzing the change of reinforced concrete eccentric beam - column connections strength. for the design of shear wall beam question, suggestions were proposed ; the suggestions was also verified and explained by a practical construction design
主要內容包括：敘述了結構概念設計在框?剪結構中的具體應用，並給出了算例和相應的公式；對工程設計軟體pk - pm存在的缺陷，提出了改進及建議；對框架樑柱偏心節點強度的變化進行了分析，給出了計算公式及量化指標；對困擾設計人員的剪力墻連梁設計問題給出了設計建議。 -
5 ) based on test results and going by ultimate balance theory, the paper drew anti - shear formula of the wall under eccentric loads, and discussed the main factors which influenced its anti - shear bearing capacity. 6 ) based on plain section assumption, the paper studied the normal section bearing capacity of the wall. stress, strain and deformation computation was combined to establish bearing capacity formulas for the normal section under moment, unaxial loads and axial loads respectively
6 ）以應變平截面假定為基礎，對密肋復合墻體正截面極限承載力進行研究，即將墻體從初始受荷到正截面極限狀態的各階段的應力、內力及變形計算貫通起來，建立了墻體正截面壓彎、拉彎承載力實用計算公式和軸心承載力計算公式。
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