| 摘要 |
PURPOSE:To make it possible to construct a curved continuous underground wall by forming a form into a right angled triangle section and setting so as the end of a construction joint in the preceding panel is at right angles to an axis of the succeeding excavated trench in the case of drawing the form. CONSTITUTION:Both sides of the preceding excavated trench 10 are partitioned into trapezoids by inserting a hollow form 12 having a right angled triangle section, which size is correspondent to that of the width of the trench, into the construction joint section. Then, an area enclosed by the hollow form 12 in the preceding excavated trench 10 is filled with concrete, and start to solidify. And, it is set so as to cross at right angles with the center axis l2 of the succeeding excavated trench 16. According to the constitution, a jointing of successive pours between the preceding panel and the succeeding panel is executed smoothly without making unbalance of excavation.
|
