A　series　of　large-scale　shaking　table　experiments　was　conducted　on　three-arch　type　underground　structure　in　liquefiable　ground　subjected　to　the　near　field　earthquake　and　the　far　field　earthquake.　Experimental　results　are　discussed　in　items　of　pore　water　pressure,　earthquake-induced　ground　settlement,　acceleration　response　of　soil　and　structure　and　the　deformation　of　model　structure.　The　measured　data　substantiate　that,　the　buildup　of　pore　water　pressure　mainly　experiences　two　stages,　at　the　first　stage,　the　pore　water　pressure　increases　slowly,　at　the　second　stage,　the　pore　water　pressure　rises　sharply.　Good　agreement　is　found　between　the　development　of　pore　water　pressure　and　Arias　intensity.　A　larger　peak　of　Arias　intensity　corresponds　a　higher　peak　of　pore　water　pressure　ratio.　The　distribution　of　pore　water　pressure　field　implies　a　lower　degree　of　liquefaction　at　the　bottom　of　model　structure　as　result　of　a　low　intensity　earthquake;　while　for　the　high　intensity　earthquake,　the　lower　degree　of　liquefaction　occurs　at　the　bottom　of　ground.　Subjected　to　the　high　intensity　earthquake,　the　model　structure　generates　an　upward　movement　relative　to　the　foundation.　Both　model　structure　and　model　soil　present　intense　response　to　the　ground　motion　with　low　frequency,　the　peak　acceleration　of　ground　motion　in　shallower　fine　sand　layer　shows　some　＇spikes＇　during　the　shallower　liquefied　soil　cyclic　mobility.　Moreover,　the　low　frequency　components　appear　more　at　the　upper　soil　than　deeper　soil.　For　the　structure,　the　strain　response　of　center　column　is　larger　than　that　of　subarch,　and　the　strain　recorded　at　atrium　arch　is　the　smallest.　With　the　increase　of　tensile　strain　amplitude,　the　natural　frequency　of　the　model　structure　decreases.　The　tensile　strain　recorded　at　the　primary　observation　plane　is　distinctly　different　from　that　at　secondary　observation　plane,　implying　that　remarkable　spatial　effects　of　model　structure.　©,　2015,　Academia　Sinica.　All　right　reserved.