拉力樁 的英文怎麼說
中文拼音 [lālìzhuāng]
拉力樁
英文
tension pile-
This paper focuses on the problem of semi - infinite elastic body filled with the material which behaves differently in tension and compression. the contents include : ( 1 ) the solution of elasticity theory for the material incapable in tension is established by introducing heaviside function ; ( 2 ) the solution of elasticity theory with different modulus in tension and compression is established based on the solution of elasticity theory for the material incapable in tension and mindlin ' s solution ; ( 3 ) the solution of elasticity theory with different modulus in tension and compression is employed to analyze the stress of pile foundation ; ( 4 ) the solution of elasticity theory with different modulus in tension and compression is employed to analyze the settlement of pile foundation
本文考慮材料的拉壓性能不同的特點,對半無限空間內部作用豎向集中力問題進行了新的研究,做了如下工作: ( 1 )引入heaviside函數,建立了不能承受拉應力材料的彈性理論解; ( 2 )基於不能承受拉應力材料的彈性理論解和mindlin解,建立了拉壓模量不同材料的彈性理論解; ( 3 )將拉壓模量不同材料的彈性理論解應用於樁基應力分析; ( 4 )將拉壓模量不同材料的彈性理論解應用於樁基沉降分析。Many survey data refer to mortal down load and sedimentation be produced due to the negative friction in pile foundation. the inequable sedimentation endanger the pile foundation greatly
國內外一些實測資料表明樁基礎在使用階段負摩擦力可能產生非常大的下拉荷載和沉降,尤其產生的不均勻沉降對基礎危害最大。For now, dragging much of the cabinet to beijing seems a small price to pay for diffusing protectionist pressure at home
現今,國內保護貿易論者的壓力若能化解,將大量內閣成員拉去北京不過小事一樁,無足掛齒。In this thesis summarize how to avoid and deal with the negative friction in designing and using. researches indicate : ( 1 ) the negative friction in pile will lead to large number of down load in some designs. this friction must be considered in design to avoid the sedimentation and destroy in the building
研究結果表明: ( 1 )在工程設計中,有些情況由於負摩擦力產生的下拉荷載數值相當大,在設計中應充分給予重視,以避免在使用中由於下拉荷載使樁的軸向荷載增加引起樁的沉降或不均勻沉降,而導致建築物的破壞。Soil : investigation and testing - static test on single pile - part 2 : tension pile
土地.勘測和試驗.單樁靜態試驗.第2部分:拉力樁According to the character that the soil can endure the press than the tensile strength, the arching shape of the soil arch between piles has been regarded as the reasonable arch axes. by analyzing the mechanical balance condition of the arch, the transfer mechanism of the thrust has been gained. at the same time, the formula for computing the thrust acting on the pile has been gotten, and the present computing formula is just the special example of it
根據巖土體抗壓性好、抗拉性差的特點,將樁間土拱的拱形視為合理拱軸線方程,通過分析土拱的力學平衡條件,得出樁間滑坡推力的傳遞模型,並由此得到抗滑樁上的滑坡推力計算公式,現有抗滑樁上滑坡推力的計算公式只是本文公式的特例。( 6 ) the thesis puts forward the pile - top displacement control method, and it can account the least force of the anchor wire on anti - slide pile
( 6 )本文提出了錨拉抗滑樁錨拉力計算的樁頂位移控製法,計算控制樁頂位移所需的最小錨拉力。According to the documentation collected from domestic and abroad wang wei dong who works in huadong architect and structure institute utilizes the similar work property between the underground continuous wall and pile subjected the vertical loads, and introduces poulos method of elasticity and plastic which applies to pile foundation into the calculation for subsidence of underground continuous wall. pujialiu and yu yuzhou from water and electronic engineering of qinghua university, according to the result of three axes, define the concrete parameter utilize the model of non - linear e - b combined with the design cross section of dam in xiaolangdi, yellow river accept the total stress programme of thepd dam, and we analyze the stress and displacement of plastic concrete diaphragm wall by finite element method in comparison with the result of common concrete one. at same time, we consider the effect of the character of plastic concrete diaphragm wall which is composed of different gradients and adopting the level of stress and pulling stress infers whether the plastic concrete diaphragm wall is safe or not
地下連續墻是一種歷史較短的施工方法,目前,砼防滲墻的設計還是以傳統的設計方法為主,根據查找國內外文獻資料,華東建築設計院王衛東利用地下連續墻與樁在豎向荷載作用下的工作性能有相似性,將適用於樁基的poulos彈性理論引入對地下連續墻的沉降計算中;清華大學水利水電工程系濮家騮、于玉貞根據三軸試驗結果確定混凝土的參數,利用非線性e - b模型,結合黃河小浪底土石壩設計剖面,採用thepd土石壩總應力程序,對深覆蓋層塑性混凝土防滲墻的應力、位移進行有限元分析,並與普通混凝土防滲墻計算結果加以對比,同時分析了不同配比塑性混凝土特性的影響,並採用應力水平和拉應力數值來判斷塑性混凝土防滲墻的安全程度。One of the most important one is the piles on the poor geological conditions such as saturated permafrost soil or underneath ice layers, such as : 1. frozen soil beside piles is thawed caused by construction and cement hydrate heat, it need quite time to recover freezing again ; 2. frost heaving sometimes pull up piles ; 3
凍土地區樁基普遍存在著: 1由於施工、水泥水化等造成樁周凍土融化,需相當長時間內才能回凍; 2樁周凍土凍脹對樁的「冷拔」作用往往將樁拉斷; 3樁周凍土融沉引起負摩阻力。In order to reveal load mechanism and failure mode of thick pile caps, by means of the test of 1 / 4 - scale models of thick pile caps with six piles and post - handling study of 3 - dimensional non - linear finite element adina, this paper points out the shortage, which is that the design of pile caps is carried out by flexural strength in chinese technical code for building pile foundations jgj94 - 94 and american reinforcement concrete building construction code aci318 - 02, promulgates that the failure mode of thick pile caps is punching failure and load transfer mechanism is the strut - and - tie, which is that zones of concrete with primarily unidirectional compressive stresses are modeled by compress struts, while tension ties are used to model longitudinal reinforcement over pile
摘要為揭示厚承臺的傳力機理和破壞形式,通過對4個1 : 5比例的六樁厚承臺的模型試驗研究與三維非線性有限元adina的后處理研究,指出中國建築樁基技術規范jgj94 - 94與美國鋼筋砼房屋建築規范aci318 - 02規范中,承臺以彎曲強度進行配筋計算的設計方法之不足,揭示出厚承臺的破壞模式是沖切破壞,傳力機理是以帶有主要單向壓應力的砼區域作斜壓桿,樁頂區域的縱筋作拉桿的空間桁架。The mechanism of reinforcing steel bar under the press or pull is researched and the characteristics under the pull - press cyclic loading is studied in composite foundation. it shows that the stress concentrating on the reinforcing steel bar and the increasing stress can be seen with the increasing of cyclic times. residual strain always exists after unloading without considering the size of pullout force and increases slowly with the cyclic times
探討了復合地基中抗拔鋼筋的受壓受拉機理及在拉壓循環荷載作用下的性狀,研究發現,隨拉壓循環次數的增加,應力向鋼筋集中,鋼筋承受的壓力隨著增大;無論上拔力大小,卸載后都有殘余變形,並隨著拉拔循環次數的增加而緩緩增加;抗拔碎石樁破壞性狀明顯,可明確的得到抗拔碎石樁的破壞荷載。With the consideration of the vertical wave effect of soil and soil - pile interaction, an approximate analytical solution to vertical vibration of pile system with variable impedance in visco - elastic layered soil is developed. a simplified and practical mathematical model for interaction between soil layers is proposed, and its applicability is theoretically investigated. based on this model and by using laplace transforms and the transmit property of impedance function, the analytical expression of the impedance function and solutions of the displacement and velocity response function in frequency domain and in time domain at the pile head are derived
4 、從三維軸對稱土模型出發,對考慮樁土耦合作用、土層層間聯系以及樁周土豎向應力梯度變化條件下的成層粘彈性土中完整樁及變阻抗樁系統縱向振動問題進行了研究,提出了成層土中變阻抗樁系統縱向振動問題的近似解析解法和樁周土層層間相互作用的簡化而實用的數學模型,並利用拉氏變換和阻抗函數的傳遞性,獲得了成層土中任意段變阻抗樁樁頂阻抗函數的解析表達式,以及樁頂速度導納和時域速度響應解析解和半解析解。Through these studies and analysis, following conclusions could be drawn : ( 1 ) it is necessary to study on harness engineering of landslide and dangerous rock since the main representations of this geological hazard are landslide and dangerous rock through geological investigation ; ( 2 ) it can be concluded though stability analysis that the dingzhuang landslide is stable naturally, which is identical to the in - situ investigation ; ( 3 ) through stability analysis, the landslide would slide if the water level dropped down from 175. 10m to 156. 0m and it rained successively after the three gorges reservoir work. ( 4 ) according to the results of calculation and the characteristic of the landslide, it is suggested that such measures as unloading at upper part, anchorage and pile supporting system and drainage system should be used on the landslide. ( 5 ) according to geological investigation, there are three kinds of dangerous rock in the engineering, those are failing - down rock, collapsing rock and sliding rock
因此有必要對滑坡進行治理; ( 4 )根據滑坡推力計算結果和本滑坡屬牽引式滑坡的特點,滑坡體上部相對較穩定,中下部處于基本穩定或不穩定狀態,因此建議此滑坡治理採用上部削坡減載與錨拉抗滑樁、擋墻進行支擋結合的處理方法,同時結合截排水等措施進行綜合治理; ( 5 )根據地勘資料,通過對危巖體的形態、規模、基座和底界層及分佈特點和分析,將本工程危巖體失穩崩塌的方式歸納為墜落式、傾倒式和滑塌式三種類型並分別提出相應的穩定性計算方法; ( 6 )分別對本工程中的危巖體進行了穩定性計算,並且發現其都處于不穩定狀態,因此根據實際情況分別提出相應襯砌支撐和清理等加固治理措施,最後還對加固后的危巖體進行了校核計算,滿足要求。With laplace transforms, the question can be solved in laplace domain. with the aid of impedance transmit functions, an analytical solution for the impedance function in laplace domain is yielded, so is the corresponding analytical solution for the impedance function in frequency domain, semi - analytical solution of velocity response in time - domain subjected to a semi - sine exciting force and mobility at the level of the pile head
利用拉普拉斯變換,將定解問題轉化到拉普拉斯域內求解,結合阻抗函數的傳遞性,得到了拉普拉斯域內的樁頂阻抗函數解析解,進而得到了頻域內的樁頂阻抗函數解析解、半正弦脈沖激振力作用下的速度時域響應半解析解和速度導納。This article analyses the reinforcement mechanism of pile - net composite foundation mainly, combining natural equilibrium arch theory and reinforced cushion tension membrane theory to deduce the calculation formula of the stress ratio of pile - soil in the pile - net composite foundation under embankment
本文主要對樁網復合地基的加固機理進行分析,並結合自然平衡拱理論和加筋墊層拉膜效應理論推導出路堤下樁網復合地基樁土應力比計算公式,同時分析了各設計參數變化對樁土應力比的變化規律。This thesis put forward a systemic method to settle the negative friction in project design. it includes when the negative friction must be consider, the zero position decided, count the down load, the negative friction group pile, the infection on end - bearing and sedimentation and stability, how to deal with in design to avoid the negative friction and how to solve when the negative friction produced
本文提出了在工程設計中如何處理樁基負摩擦力的方法,包括什麼情況下考慮負摩擦力、負摩擦力中性點位置的確定、樁基下拉荷載的計算、負摩擦力的群樁效應、負摩擦力對樁基豎向承載力和沉降的影響、設計施工中如何避免出現負摩擦力以及對已經出現的負摩擦力如何根治。According to calculating and analysis, educes the distributing laws and their correlations of horizontal displacement and stress of stabilizing pile, anchor pull and earth press in two sides of pile, including the distributing of point repel force and internal force of pile at the terminal state, providing full theoretical basis for anchor cable and stabilizing pile structure design, strength check, stability check and determination of anti - slide force for a single stabilizing pile
通過計算分析,得出了抗滑樁的水平位移、樁身應力、錨索拉力和樁側土壓力的分佈規律和它們之間的相互關系以及極限狀態時的樁的結點抗力和樁的內力分佈規律,為錨索樁的結構設計、強度校核、穩定性校核和單樁抗滑力的確定提供了充分的理論依據,同時也提出了錨索抗滑樁計算分析的一種新方法。The paper sums up the construction technique of qinjiatuo super bridge in all : consolidating the soft ground foundation with vibrating & impacting macadam piles ; constructing the bored cast - in - place piles under the complex geological condition ; developing and researching cable - stayed handling basket with the bearing capacity of 3000kn ; beam construction ; construction technique of the new type bridge deck and dynamic & static load test
本文全面總結了覃家沱特大橋施工技術:振沖碎石樁加固軟弱地基、復雜地質情況下鉆孔樁施工、承載力3000kn斜拉式掛籃開發與研製、梁部施工、新型橋面鋪裝層施工技術及動靜載試驗。Secondly, considering the complexity of the analysis of inclined - loading pile, nonlinear finite element method is adopted to calculate the internal force and displacement of pile group under inclined loads, with the concept of equivalent width presented to simplify 3d problems into 2d problems. and a program is developed as well, which is able to consider the continuity, elastic - plasticity and layered characteristic of soil around the pile shaft. besides, the interactions among pile, base slab and soil are considered in this program and contact surface element is used to simulate slipping and crazing between pile and soil, or between base slab and soil under loads. then, the non - tension analysis is proposed, to reflect the low - tensile property of soil and concrete
在此基礎上,針對傾斜荷載下群樁基礎分析中的復雜性,提出採用非線性有限元對傾斜荷載下群樁的內力及位移進行分析,應用樁的等效寬度概念將空間問題簡化為平面問題考慮,並開發出能考慮樁周土介質連續性、彈塑性、分層性等因素的傾斜荷載下群樁內力及位移分析的計算機程序,並在程序中考慮了樁、土、承臺的相互作用,提出了採用接觸面單元來考慮荷載作用下樁與土體及承臺與土體間的滑移、開裂;並在此基礎上,提出了傾斜荷載下群樁基礎的「無拉力」分析方法,可有效地反映土體及混凝土材料的低抗拉特性。Abstract : earth pressure on a anchored pile sheet wall and a reinforced earth retaining wall, are obtained by prototype observation, finite element method and theoretical analysis. the results can be used as reference for lateral pressure of similar retaining structures
文摘:對一座錨拉式樁板墻和一座楔形鋼筋混凝土塊拉筋加筋土擋墻,將原型觀測、有限元計算、理論計算得到的土壓力進行分析和比較,所得結論可供設計類似支擋結構時計算土壓力參考。分享友人