凍土學 的英文怎麼說
中文拼音 [dòngtǔxué]
凍土學
英文
geochryology-
Standard test method for scaling resistance of concrete surfaces exposed to deicing chemicals
暴露于防凍化學藥品的混凝土表面抗蝕刻性的標準試驗方法Roll over protective structure ( rops ) is a device which installs on out of construction vehicle. the main functions are : when the vehicle rolling over. rops can prevent the vehicle from rolling over further, and reduce the possibility of rolling vehicle injures operator ; when the vehicle traveling on freezing soil. concrete and rock, it has large resist continuous impact ability ; when the vehicle overturning rops can support the whole vehicle. arrangement of falling object protective structure ( fops ) can block objects ( such as trees, rocks ) so that supply protection for operator. this problem is that research rolling over and falling objects protective structure of bulldozer by learning research condition of rops / fops and relative lay down international standard. on the base of theory analysis. detrudes counting formula of rops / fops deformation through founding mechanics analysis model of rops / fops at the stage of elasticity and plastoelastic. and finds a set of feasible nonlinear finite element analysis counting. lt calculates rops / fops plastoelastic deforma variable of 320hp bulldozer, bulldozer has been carried out by optimizing design method
其主要功能是：當車輛滾翻時， rops能刺入未凍土壤而阻止車輛的進一步滾翻，降低滾翻的車輛對系著安全帶司機軋傷的可能性；保證rops在碰撞和沖擊變形不大的地面（如凍土、混疑土上、巖石）時，能具有相當大的抗連續沖擊能力；當車輛已經處于顛覆狀態時，已經變形的rops應能支撐住整車。落物保護裝置（簡稱fops ） ，其構件的布置方式要能遮蔽墜落的物體（如，樹木、巖石等） ，以便對司機提供適當的保護。本課題主要通過了解國內外有關對rops fops的研究情況和有關國際標準的制定，對大型推土機傾翻和落物保護裝置進行研究，在理論分析的基礎上，通過建立rops fops的力學分析模型，推導彈性、彈塑性階段rops fops變形的計算公式，建立一套可行的rops fops的非線性有限元分析計算方法。In the end of this part, some application examples of fracture mechanics for the frozen soil have been given out. in the second part, continuum damage mechanics has been introduced to study the characteristics of the frozen soil. on base of additional damage concept, a judging model for initial and additional damage for frozen soil was proposed
第五章進行的是凍土損傷力學的測試研究，首先介紹了凍土損傷的動態測試原理與方法，採用附加損傷的概念推導了凍土初始與附加損傷的動態識別模式，隨后對凍土單軸壓縮過程進行了動態測試，對在這一過程中的內部結構變化特徵進行了研究。At last, an effective stress were calculated and compared with the really stress using the theory mentioned above. the third part is a discussion and prospect on the frozen soil study using fracture mechanics theory and continuum damage mechanics. all of the work are supported by nsf and sklfsa
最後對本文工作進行了總結，分別對凍土斷裂力學、損傷力學研究的發展與展望提出了自己的觀點與設想，指出將斷裂力學、損傷力學引入凍土力學研究至今還僅僅是初步工作，還需要進行大量的研究工作。A theoretical model for the creep process of frozen soil based on damage mechanics
凍土蠕變過程的損傷力學模型The aim of this thesis studies frozen - heave forces on culvert brake slab - foundation. first, it introduces the reasons and types of frozen damage of the slab - foundation in seasonal frozen soil conditions. secondly, the experimental studies of frozen soil mechanics were decided in order to revolve frozen - heave forces on the slab - foundation
本論文以涵閘平板式基礎作為研究對象，首先探討了平板基礎凍脹破壞的原因及破壞類型，並圍繞涵閘工程平板基礎的凍脹力進行了工程凍土力學方面的試驗研究。In the first part of this dissertation, theory of fracture mechanics of the frozen soil has been presented. a general strength theory based on fracture mechanics was proposed, and the validity of the theory using in frozen soil was discussed. the fracture toughness values for different kinds of cracks extension were determined, such as the plane strain fracture toughness for mode i cracking ( kic ), fracture toughness for mode cracking of frozen soil and the intersection of frozen soil and concrete
論文第二章為凍土斷裂力學的基本理論，包括斷裂力學在凍土研究中的工程適用性、條件適用性、平面應變斷裂韌度測試的適用條件等，給出了凍土斷裂韌度k _ （ c ） 、 k _ （ c ） 、 -型復合斷裂測試的基本原理及試驗方法，並基於weibull脆性破壞理論推導了凍土三點彎曲試樣k _ （ c ）尺寸效應系數，為後面的工作提供理論基礎。Moisture - temperature coupling mathematical model in freezing soil and finite element numerical simulation
正凍土中水熱耦合數學模型及有限元數值模擬Investigation of the constitutive modle of frozen soil based on meso - mechanics
基於細觀力學方法的凍土本構模型研究Two test methods are employed : one is loading the samples before thawing, and the other is loading the samples after completely thawed. the coefficient of thaw settlement as a function of granule, as a function of water, and also as a function of dry density are protracted ; besides, the consolidation coefficient of thawed samples as a function of granule, as a function of water, and as a function of dry density are protracted. we can discover from the test results that the thaw - settlement coefficient and the consolidation coefficient of thawed samples are mainly relevant to the granule, dry density and the water content they have little to do with the geology and geography factor of the frozen soils
為了研究季節凍土區工業民用建築的基礎淺埋穩定性問題，特開展了有關季節凍土的融化壓縮特性的研究，先後在內蒙古農業大學三個比較典型的建築地點取了將近三百個試樣，在室內進行試驗，採取兩種試驗方法即先融化后壓縮試驗法和同時融化壓縮試驗法，通過對這三個不同地點的兩種不同的試驗方法的試驗結果進行對比分行，分別繪制了融沉系數與凍土的含水（冰）量、干容重以及顆粒級配的關系曲線;融化壓縮系數與凍土的含水（冰）量、干容重以及顆粒級配的關系曲線，由試驗結果發現凍土的融沉系數和融化壓縮系數都與凍土的含水量呈正向相關關系，可近似的用線性方程來表示;兩種實驗方法的總沉降量與凍土的含水量呈正向相關關系，與凍土的干容重呈反向相關關系，也可以近似的用線性方程來表示。As basement of foundation of various buildings in cold regions, frozen soil plays an important role for building safety and utility
凍土作為寒區工程地基基礎，其破壞形式與破壞機理研究是凍土力學重要研究領域之一。Thaw consolidation of frozen soils is one of the important behaviors of frozen soil mechanics
凍土融化壓縮性是凍土力學的重要特性之一。In this paper, based on the tracing field infiltration tests into frozen and unfrozen soils with three species of soil texture and eight species of soil structure in seasonal frozen soil regions during three overwinters, the basic infiltration characteristics, reduction infiltration mechanism and major factors influencing soil infiltration characteristics are studied all - sidedly and systematically. to master frozen soil infiltration characteristics and supply scientific directions for winter irrigation
本文基於季節性凍土區田間三種質地、八種結構歷時三個越冬期的凍土、非凍土入滲跟蹤試驗，全面、系統地研究了凍融土壤的入滲特性、阻滲機理和影響凍融土壤入滲特性的主要因素，掌握凍融條件下土壤水分入滲特性，為冬灌及農業節水灌溉提供科學依據。This article analyzes the characteristics of permafrost earth, establishes mathematical model of earth thermal transfer, which consists of thermal transfer equation in thaw zone, the conservation relationship of heat quantity transferring from pipeline to earth and from earth surface to atmosphere, earth temperatures at thaw zone interface, heat transfer condition of solid phase changing into liquid phase at phase interface
文章分析了永凍土的特點，建立了永凍土地帶土壤傳熱數學模型：融化圈內外傳熱方程、管道向土壤和土壤表面向大氣所放熱量的守恆關系、融化圈界面處土壤溫度、相變界面處固相變為液相的傳熱條件。When scientists fly into remote areas of siberia to study permafrost, they gaze down on an endless expanse of arctic lakes
當科學家們飛到遙遠的西伯利亞研究永久凍土帶時，他們發現了一處一直在膨脹的北極湖。In order to evaluate the engineering geology factor and the stable calculation for buildings in construction areas. some science workers have done a lot of experimental study in permafrost areas in china
為了評價建築區的工程地質條件及建築物的穩定性計算，我國的一些科學工作者曾在多年凍土地區作了大量的試驗研究。Study on mechanical performances of artificial frozen wall in round - shaped deep foundation pit
圓形深基坑中人工凍土帷幕力學性能研究In this paper, the present status of development on the deep foundation pit conserved by frozen wall and coupled problems are analyzed thoroughly. the governing differential equations are obtained based on thermodynamics, while the finite element formulae is achieved by the galerkin ' s method
本文在對凍土墻圍護深基坑開挖凍結溫度場和應力場耦合分析研究現狀的基礎上，以熱力學為基礎，推導了凍土墻溫度場控制微分方程，並利用伽遼金方法推導了凍土墻凍結溫度場和應力場耦合計算的有限元計算格式。Abstract : based on the mathematical model for coupled of moisture, heat and stress fields during soil freezing, moisture, heat and stress fields during soil freezing around the buried chilled pipeline were studied
文摘:根據凍土水熱力耦合數學模型，數值模擬了輸冷管道附近土體凍結過程的溫度場、水分場、應力場，並給出了土體凍脹位移，得出凍土水熱力三場的耦合關系。Having been used in several tests, the new apparatus proves to be very accurate and applicable in the research field of frozen soil
用該儀器進行了相關試驗研究，結果表明，儀器得到的數據合理有效，該儀器設備可以在凍土學研究中推廣應用。分享友人