文章信息/Info

Title:

Reviews of Load�睷eduction Mechanism and Engineering Application of EPS Materials

作者:

 劉宇翼1; 2; 從衛民3; 蘇運河1; 佘躍心1; 楊琴1; 潘鑫1; 湯奇1

（1. 淮陰工學院建筑工程學院，（2. 中國礦業大學 深部巖土力學與地下工程國家重點實驗室，（3. 淮安市建設工程施工圖審查處

Author(s):

LIU Yuyi1; 2;  CONG Weimin3;  SU Yunhe1; SHE Yuexin1; YANG Qin1;  PAN Xin1; TANG Qi1

(1.Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology (2. State Key Laboratory for Geomechenics and Deep Underground Engineering, China University of Mining & Technology,  (3. Department of Construction Plan Examination of Huaian

關鍵詞:

EPS材料; 減荷效應; 減荷機理; 礦井井筒; 填土涵洞; 擋土結構

Keywords:

EPS materials;  load�瞨eduction effects;  load�瞨eduction mechanism;  mine shaft wall;  culverts under stacked soil;  retaining structure

DOI:

10.7502/j.issn.1674-3962.2017.09.11

文獻標志碼:

A

摘要:

EPS是由苯乙烯在分散劑作用下懸浮于水中，經引發劑引發聚合，再加液體發泡劑浸漬而成的泡沫材料。EPS泡沫具有輕質、壓縮性高、穩定性好、耐久性長、吸濕性低、隔熱保溫效果好等優點，是一種理想的降低土壓力緩沖材料，在礦業、公路、建筑等工程中已得到實踐驗證，在廣泛收集、認真查閱前人研究成果的基礎上，總結了EPS材料的密度、耐久性、熱穩定性、熱傳導性等物理力學特性，重點闡述了礦井井筒、填土涵洞、擋土結構三種不同類型結構中使用EPS作為減荷材料的應用效果，并從能量學、土拱效應、土壓力理論等角度詮釋了EPS材料的減荷機理。針對礦井井筒中的EPS減荷材料，提出高應力狀態下EPS材料的變形特性、復雜環境中EPS材料的熱力性能、巖土-EPS-井壁相互作用以及EPS材料減荷效應的試驗驗證是今后研究的主要發展方向。

Abstract:

Expanded Polystyrene (EPS) is a kind of foam material which is made from styrene that suspended in water under the action of a dispersing agent, then polymerized by initiator and impregnated with liquid foaming agent. Tested in mining, roads, building and other projects, EPS is regarded as an ideal buffer material to reduce soil pressure due to its advantages like light weight, high compressibility, good stability, long durability, low moisture absorption, good heat insulation and preservation performance, etc. Based on the predecessors�� research, the density, durability, thermal stability, thermal conductivity as well as other physical and mechanical properties of EPS materials are summarized, and the load�瞨educing effects are analyzed emphatically when EPS materials are applied in the mine shaft wall, culvert under stacked soil and retaining structure. The load�瞨educing mechanism of EPS material has been illustrated according to energetics, soil arching effect and earth pressure theory. Finally, it puts forward that the studies on mechanical behaviors of EPS under high stresses, thermal performance of EPS in a complex environment, the rock(soil)�睧PS�瞱all interaction and test verification of load�瞨educing effect of EPS materials are the main directions of further research.