深基坑工程存在的问题和展望.docx

深基坑工程存在的问题和展望 1?Overview In?recent?years,?with?the?development?of?economy?and?the?progress?of?society, high-rise?buildings?and?underground?buildings?have?been?found?in?big?cities, And?tunnel projects?increased?greatly,?but?at?the?same?time?in?order?to?save?the?land,?make?full?use?of underground?space,?the?deep?excavation?engineering?is?increasing.?The?deep?foundation?pit engineering?is?a?comprehensive?ancient?and?epoch-making?characteristics?of?geotechnical engineering,?because?it?involves?not?only?the?soil?mechanical?strength?and?deformation?of?typical problems?it?relates?to?the?soil?and?supporting?structure?interaction?problems.?After?the?analysis?is not?difficult?to?see?that?the?development?of?foundation?pit?engineering?is?a?new?type?of?support led?to?the?emergence?of?new?analysis?methods,?and?follow?the?practice,?understanding,?practice, understanding?the?law?and?gradually?matured.?In?1930s,?the?first?in?the?study?the?foundation?pit engineering?Terzaghi?and?Peake,?60s?in?Oslo?and?other?places?of?excavation?began?to?implement the?construction?monitoring,?from?70s?onwards,?many?countries?have?formulated?the?guiding?and supporting?design?of?foundation?pit?excavation?Design?and?construction?of?the?regulations?in China.?In?the?early?1980s?began?to?appear?a?lot?of?excavation.?Before?80s,?the?domestic?high-rise building?is?one?of?the?few?in?the?basement?is?a?layer?of?deep?foundation?pit,?but?4?m,?often?used in?slope?excavation?can?solve?the?problem.?By?80s,?with?a?large?number?of?high-rise?building construction?two,?began?to?appear?in?basement?excavation?depth?is?generally?around?8?m,?a?few more?than?10?m.?in?90s,?Chinasrapid?development?of?high-rise?buildings,?but?also?around?the construction?of?large?underground?municipal?facilities,?underground?shopping?malls,?subway stations,?leading?to?the?basement?layer?gradually?increased,?the?excavation?depth?of?more?than 10?m?meet?the?eye?everywhere?the?excavation. 2?deep?foundation?pit?engineering?problems Design?and?construc