overlay structure 中文意思是什麼
overlay structure
解釋
重疊結構, 覆蓋結構-
The mechanism analysis of concrete bridge asphaltum concrete overlay structure
混凝土橋瀝青混凝土加鋪體系受力分析 -
Owing to complicated earth ' s surface condition such as the steep stratum outcropping of front - zone of mountain or the huge thick gravel stratum ' s overlay and earth ' s surface large undulation, complicated underground geology structure developed extremely such as thrust and overthrust nappe, and violent change of the lateral velocity, etc. in front - zone of mountain there are a series of problems such as serious secondary disturbance and low signal - to - noise ratio in seismic exploration gathering
由於山前帶高陡巖層出露或巨厚礫石層的覆蓋、地表起伏大等復雜的地表條件、逆沖和逆掩推覆等復雜地下地質構造發育、速度橫向變化劇烈等原因，造成了山前帶地震勘探資料採集存在次生干擾嚴重和信噪比低等一系列問題。 -
3. take the lrdmis as info source to discuss the combination of gis and specialty model in information system, by the means of spatial overlay analysis the land use status movements, carried a analysis to number and quality structure of region land type by the means of landscape analysis, and principal analysis was utilized to evaluate experiment area ' s land quality hierarchy., all the work provided a scientific foundation and technological support for experiment area synthetic management and planning
以lrdmis為信息源，對信息系統中gis與專業模型的結合應用進行了探討，通過空間疊加分析方法對土地利用現狀變化進行了監測，應用景觀分析方法對區域土地類型的數量與質量結構進行了分析，應用主成分分析法進行了試區土地質量分等定級，為試區綜合治理規劃提供了一個新型的技術支撐體系。 -
According to the special shape and operate requirements of the torpedo, the structure and moulding process of the torpedo shell are established, in which the body and overlay block with grooves are moulded by fiber winding, and close moulding respectively with the adhesive by limited stop compression. in the light of the selection of raw material system, composite system with outstanding performance are defined, based on which the mechanical properties are tested., with the overall consideration of structural characters and design demands, the main factors which may have effects on the strength and stability ( including stiffness section dimension, stiffeners space, skin thickness and skin lay angle ) is optimized one by one for the structure design parameters on the base of the fem model of skin, stiffness and layover block by fem. as a result, the prototype with 1 : 1 proportion and its structure and lay optimization design are completed. the moulding technology for polyurethane foam moulding the stiffened shell is obtai ned in terms of the design, manufacture moulding, experimental mould and tooling
依據在研產品特殊的外型結構和使用要求，確定了該型號水雷復合材料殼體的具體結構形式和復合成型工藝路線，即由纖維纏繞工藝成型主體異形件，閉模成型帶通槽外貼塊，用限位加壓工裝實現粘接的工藝路線；通過對原材料體系的篩選，確定了綜合性能較好的復合材料體系，以此為基礎進行了力學性能測試；運用有限元方法，建立了蒙皮、筋條和外貼塊的分析模型，綜合考慮結構特點和設計要求，對影響結構強度與穩定性的主要因素（包括筋截面尺寸、筋間距、蒙皮厚度、蒙皮鋪層角度）分別進行了結構設計參數的優選，最終完成了復合材料異形耐外壓殼體1 : 1樣件和縮比實驗件結構及鋪層優化設計；完成了聚氨酯泡沫胎成型內置加筋殼體的成型工藝技術研究；對縮比件進行外壓性能測試，並給出了應力、應變測試結果。 -
Concrete pavement overlay structure design discussion
混凝土路面加鋪層結構設計探討 -
Based on understanding of many practices of asphalt overlay on old cement concrete pavement in our country and rehabilitation of boai road in zhongshan city, this paper analyzes and studies the rehabilitation technology of old cement concrete pavement systematically, includes : ( 1 ) the assessment for structure characteristic of old cement concrete pavement a correct assessment for pavement distress and structure characteristic of old cement concrete pavement before overlay is the stick point of preventing reflection cracking and guarantee the success of rehabilitation, which requires understanding how the structure characteristic of old pavement effects the stress and reflection cracking of the asphalt overlay
本文在調查了解國內許多舊路改造實踐工程的前提下，基於中山市博愛一路的改造實踐，對舊水泥混凝土路面瀝青罩面改造進行了系統的分析研究。主要的研究內容包括： （ 1 ）原有路面結構性能的評估在瀝青混凝土加鋪罩面之前對舊水泥混凝土路面的損壞情況和結構狀況進行正確的評價是解決反射裂縫和保證加罩成功至關重要的一環，其前提就是要了解舊水泥混凝土路面的結構特性對瀝青罩面層中的應力和反射裂縫的影響。 -
This paper analyzes how structure characteristic of old concrete pavement affects the load stress of asphalt overlay by the three dimensions finite element analysis program - adina. ( 2 ) the asphalt overlay design in rehabilitation of old cement concrete pavement asphalt overlay design not only relates the distress, structure characteristic, traffic and environment of the old pavement, but also requires reasonable mechanics model, correct material parameter, effective measure of preventing reflection cracking, and so on
（ 2 ）舊水泥混凝土路面瀝青罩面改造中瀝青罩面層的設計舊路改造的罩面設計方法不僅涉及舊路面的損壞、結構狀況、交通狀況、環境因素，而且還需要合適的力學分析模型、正確的材料參數、有效的防反射裂縫措施等，內容廣泛、復雜多變，至今尚未有成熟的設計方法。 -
Structure design of asphalt mixture overlay on old concrete pavement
舊混凝土路面瀝青混合料加鋪層的結構設計 -
It indicates that although this procedure has introduced the mechanistic - empirical method, but still is not perfect in design theory : one is about bearing capacity evaluation method and device. the currently used device - benkelman beam is dropping behind the development of the pavement testing service ; the other is about the mechanistic method that used in overlay design. it simplifies the original pavement and subgrade as a whole half infinite space, this is not true in the real layered pavement structure
綜合分析了各種罩面設計方法的原理及其優缺點，對於我國目前設計規范中所採用的罩面設計方法進行了詳細的分析與研究，指出了它雖然已經採用了力學與經驗相結合的設計方法，但仍然存在著明顯的不足之處：一方面是舊路承載能力評價設備仍然採用貝克曼梁，檢測手段落後；另一方面，在力學設計方法中，對于舊路承載能力的評估忽略了舊路面結構的分層，而是採用了近似的彈性半空間體，給出了舊路頂面的綜合回彈模量。 -
Two different reinforcing methodologies are applied : modification of the overlay characteristics by adding chopped glass fibers to the hot mixture asphalt ( hma ) and reinforcing asphalt overlay with glass grids. theory of fracture mechanics ( fm ) is employed to determine crack growth rates for the suggested anti - cracking overlay systems. asphalt mixture designing tests, three point bending tests and fatigue crack propagation tests were carried out. the critical stress intensity factors kic are determined for plain and reinforced asphalt concrete. depending on the fatigue crack propagation, the crack growth rate is determined for each type of anti - cracking system and the cracking process is also analyzed. one of the significant points in this study is the attempt to give better understanding of the crack propagation for multilayer asphaltic overlay or what are suggested herein to be called composite structure anti - cracking overlay system. the results indicate that the reinforcing materials improve anti - cracking characteristics of the asphalt concrete. composite structure anti - cracking overlay gives a good solution for the reflective cracking phenomenon over old cracked pavements
利用2種不同的方法加筋瀝青罩面:在瀝青混合料中加入短切玻璃纖維改善瀝青混凝土的特性，採用玻璃格珊加筋瀝青混凝土.應用斷裂力學方法分析瀝青路面裂縫擴展機理.採用瀝青混合料設計試驗、三點彎曲試驗和疲勞裂縫擴展試驗，確定加筋瀝青混凝土的臨界應力強度因子kic ，測量每一種瀝青罩面抗裂系統的裂縫擴展速率.本研究的主要特點是提出復合型抗裂罩面系統，分析了多層加筋瀝青罩面裂縫擴展過程，推薦了若干瀝青路面抗裂系統.結果證明，加筋材料可以提高瀝青罩面的抗裂特性，復合型抗裂罩面系統能夠有效地阻止反射裂縫的擴展
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