A.先墻后拱法;先拱后墻法;由外向內 B.先拱后墻法;先墻后拱法;由內向外 C.先拱后墻法;先墻后拱法;由外向內 D.先墻后拱法;先拱后墻法;由內向外
A.0.5%;10mm B.0.1%;5mm C.0.5%;5mm D.0.1%;10mm
A.0.3m;0.5m;砂土 B.0.3m;0.5m;粘土 C.0.5m;0.3m;粘土 D.0.5m;0.3m;砂土