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    • 3. 发明申请
    • CAST-IN-PLACE MANHOLE LINER APPARATUS AND METHOD
    • WO1990002847A1
    • 1990-03-22
    • PCT/US1989003720
    • 1989-08-25
    • ACTION PRODUCTS MARKETING CORPORATION
    • ACTION PRODUCTS MARKETING CORPORATIONTRIMBLE, Carroll, O.
    • E02D29/12
    • E02D29/125E02D29/12E02D29/121
    • Concrete liners are cast in manholes using a form structure (11) made up of a collection of sheet-metal, flanged, arcuate panels (13, 19). The panels (13, 19) are assembled in belts of generally circular cross-section commencing from the bottom of the manhole for casting a concrete liner with a minimum thickness of about three inches and including openings created by sectional cylindrical inserts (83, 85, 89), all of which can be assembled, then disassembled after the concrete liner has set. To accommodate different shapes of manholes the panels can be formed into right conical, offset conical, and wedge-shaped (31, 33) belts to make transitions between vertical and tilted sections of the manhole. A key panel (15, 16, 17) is provided to allow easy disassembly of the respective belts, each key panel including a relatively narrow portion (16) with vertical flanges forming an angle which diverges toward the center of the form structure.
    • 使用由金属板,凸缘,弓形板(13,19)的集合构成的形式结构(11)将混凝土衬里浇筑在检修孔中。 面板(13,19)组装在从钻孔底部开始的大致圆形横截面的带中,用于铸造具有约三英寸的最小厚度的混凝土衬套,并且包括由圆柱形插入件(83,85, 89),所有这些都可以组装,然后在混凝土衬垫固定后拆卸。 为了适应不同形状的人孔,板可以形成右圆锥形,偏移圆锥形和楔形(31,33)带,以在井孔的垂直和倾斜部分之间形成过渡。 提供了一个键板(15,16,17),以容易地拆卸相应的皮带,每个键盘包括相对较窄的部分(16),其中垂直凸缘形成朝向模板结构的中心分叉的角度。