JOINT CONSTRUCTION OF VERTICAL JOINT PART IN UNDERGROUND CONTINUOUS WALL

摘要

PURPOSE: To prevent a partition board from sticking due to a creep-round of concrete, and reduce wear resistance in pulling-out operation. ;CONSTITUTION: In an underground continuous wall wherein a hollow box joint 103 is laid out on the upper part of a joint construction area between a succeeding panel 12 and a preceding panel 10 which constitutes an underground continuous wall while the upper part of the joint construction area between the preceding panel 10 and the succeeding panel 12 is rigidly bound in one piece by way of the box joint 103 and concrete C is mutually bound by cutting and joining the lower part of the joint construction area, there is formed a vertical space which leads to the upper part of the box joint 103 from the lower end of the box joint 103 from a ground surface in the front of a partition board 104 which is placed in position in a joint construction opening of the box joint 103. Crushed stones are filled up in the space, thereby forming a crushed stone column 105 and the preceding panel 10 is formed by filling concrete C. Then, the succeeding panel is constructed while the developed area of the crushed stone column 105 is being cut.;COPYRIGHT: (C)1996,JPO