Objective: To study clinical importance of casting pile-core crown with negative pressure suction silastic impressions and analyze reasons for the failure of routine impressions in pile-core crown.
目的：探讨铸造桩核冠常规印模过程中失败的原因，研究负压抽吸硅橡胶印模应用于铸造桩核冠的临床意义。
At present, piles with circular are used in all casting bore-hole pile foundations, but these piles have smaller perimeter and smaller section modulus as compare with the rectangular ones;
目前钻孔灌注桩基中的桩均为园形截面，和矩形截面的桩相比，园桩的周长、断面系数较小，抗弯能力差。
The paper describes the building-up process of a large size rotary jet slip-casting pile by quick pore-forming in bulky iron slag layer and in river banks floated pebble bed.
阐述了在松散渣铁层及河岸漂卵石层中快速成孔，形成较大直径的旋喷注浆桩的过程。
Casting mass concrete of pile caps in long-span continuous rigid frame bridge is one of the key processes during bridge construction.
大跨连续刚构桥大体积混凝土承台浇注是桥梁施工的关键工序之一。
Casting mass concrete of pile caps in long-span continuous rigid frame bridge is one of the key processes during bridge construction.
大跨连续刚构桥大体积混凝土承台浇注是桥梁施工的关键工序之一。
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