橋梁、路堤、隧道等道路結(jié)構(gòu)通常用于方便運輸。這些結(jié)構(gòu)在地震中經(jīng)常面臨不同程度的破壞。這些結(jié)構(gòu)的性能在地震后需要保持在一定的水平,這將有助于道路通信系統(tǒng)在地震后很容易恢復(fù)正常。為了達到這一目的,我們需要在施工期間對這些結(jié)構(gòu)進行抗震加固。地震通常有不同的震級和強度。這意味著地震對道路結(jié)構(gòu)造成的破壞程度將取決于地震的震級和強度。因此,為了更好地進行道路結(jié)構(gòu)的抗震設(shè)計,我們需要進行一些室內(nèi)試驗來了解這種結(jié)構(gòu)的抗震性能。本文探討了如何利用土工合成材料增強路堤的抗震性能。為了更好地了解土工合成材料加筋土的抗震性能和使用土工合成材料加筋土的重要性,對土工合成材料加筋路堤進行了大型振動臺模型試驗,并進行了5次模擬。五個模擬中的第一個是模擬無筋路堤的地震響應(yīng)。第二個模擬是三層土工格柵加筋路堤的地震反應(yīng)模擬。第三個模擬是五層土工格柵加筋路堤的地震反應(yīng)模擬。第四個模擬是6層土工格柵加筋路堤的地震反應(yīng)模擬。最后模擬了11層土工格柵加筋路堤的地震反應(yīng)。在有限元分析中,利用模擬軟件Abaqus 2020對無土工合成材料加筋路堤和有土工合成材料加筋路堤的抗震性能進行了模擬分析。數(shù)值分析中使用的路堤材料的工程特性是通... 

【文章來源】：哈爾濱工業(yè)大學(xué)黑龍江省 211工程院校 985工程院校

【文章頁數(shù)】：110 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
ABSTRACT
Chapter 1 Introduction
    1.1 Background,Objective and Significance of the Subject
    1.2 Research status and trend at home and abroad
        1.2.1 Application and development of geosynthetics at home and abroad
        1.2.2 Research and application status of geosynthetics
    1.3 Main contents and the organization of the research
        1.3.1 Main contents
        1.3.2 Organization of the research
Chapter 2 Theoretical Study of the Design of Geosynthetic Reinforced Embankments
    2.1 Introduction
    2.2 Techniques used in road embankment reinforcement
        2.2.1 Crest reinforcement structure
        2.2.2 Toe reinforcement structure
        2.2.3 Artificial base ground structure
        2.2.4 Barrier reinforcement structure
    2.3 Material Properties of Geosynthetics
        2.3.1 Physical properties
        2.3.2 Mechanical Properties
        2.3.3 Hydraulic Properties
        2.3.4 Endurance Properties
        2.3.5 Degradation
    2.4 Geosynthetic Reinforcement Mechanism
    2.5 Design of Geosynthetic Reinforced Embankment
        2.5.1 Design Approach
        2.5.2 Factor of Safety
        2.5.3 Evaluation of tensile characteristics for design
        2.5.4 Soil-Reinforcement Interaction Characteristics
        2.5.5 Simplified Design of Embankments on Weak Foundations
    2.6 Brief Summary
Chapter 3 Seismic Response of Geosynthetic Reinforced Embankments in Shaking Table Model Test
    3.1 Introduction
    3.2 Classification of seismic failure of embankments
    3.3 Stability analysis of the geosynthetic reinforced embankment
    3.4 Overview of seismic simulation shaking table test
        3.4.1 Development of seismic simulation shaking table test
        3.4.2 Basic structure and working principle of electro-hydraulic servo shaking table
        3.4.3 Seismic simulation shaking table parameters adopted in this study
    3.5 Basic theory and post-processing method based on shaking table test model
        3.5.1 Establishment of similarity ratio
        3.5.2 Post processing method of model dynamic characteristic test data
        3.5.3 Post processing method for the dynamic response test data of model
    3.6 Seismic wave reconstruction of shaking table
    3.7 Overview of shaking table model experiment design
        3.7.1 Model design
        3.7.2 Experimental loading system
        3.7.3 Shaking table model test results of general embankment
            3.7.3.1 Distribution diagram of seismic force under seismic action
            3.7.3.2 Preliminary conclusion
    3.8 Brief summary
Chapter 4 Road Embankment Simulations and Analysis
    4.1 Introduction
    4.2 Parameter seismic design of road embankment with and without geosynthetic reinforcements
    4.3 Seismic Simulation of Road Embankment
        4.3.1Parts
        4.3.2 Properties
        4.3.3 Assembly
        4.3.4 Steps
        4.3.5 Interactions
        4.3.6 Loads and Boundary Conditions
        4.3.7 Mesh
        4.3.8 Job
        4.3.9 Simulation results
            4.3.9.1 Unreinforced embankment
            4.3.9.2 Reinforced embankment-Case 1
            4.3.9.3 Reinforced embankment-Case 2
            4.3.9.4 Reinforced embankment-Case 3
            4.3.9.5 Reinforced embankment-Case 4
        4.3.10 Analysis of simulation results
            4.3.10.1 Analysis of peak dynamic earth pressure
            4.3.10.2 Analysis of the vertical displacement of the embankments
            4.3.10.3 Analysis of the horizontal displacement of the embankments
            4.3.10.4 Analysis of the stress distribution in the foundation soil of the embankments
    4.4 Brief Summary
Conclusion
結(jié)論
References
Acknowledgement



本文編號：3151014