首页> 外国专利> Process for producing prestressed hollow concrete articles, in particular prestressed concrete pipes, hollow articles produced by the process, in particular a prestressed concrete pipe, as well as an apparatus for carrying out the process

Process for producing prestressed hollow concrete articles, in particular prestressed concrete pipes, hollow articles produced by the process, in particular a prestressed concrete pipe, as well as an apparatus for carrying out the process

机译：生产预应力空心混凝土制品，特别是预应力混凝土管的方法，由该方法生产的空心制品，特别是预应力混凝土管，以及进行该方法的设备

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摘要

For producing hollow concrete articles prestressed in the longitudinal and annular directions, in particular prestressed concrete pipes, use is made of a formwork mould (20) comprising an inner mould (21) and an outer mould (22). The inner mould (21) has between a rigid inner mould shell (25), for example made of steel, and an elastically deformable inner mould shell (27), for example made of rubber and serving as formwork for the hollow article, an inner pressure chamber (26) to which a hydraulic medium can be admitted. The outer mould (22) comprises a one-part rigid outer mould shell (28), for example made of steel, and an elastically deformable outer mould shell (30), for example made of rubber, serving as formwork for the hollow article, between which shells there is likewise formed an outer pressure chamber (29), to which a hydraulic medium can be admitted. For applying the longitudinal and annular prestressing to the hollow article, first of all the longitudinal reinforcement is stressed against the precompacted fresh concrete and then the annular reinforcement is stressed by radial expansion of the moulds. IMAGE

机译：为了生产在纵向和环形方向上预应力的空心混凝土制品，特别是预应力混凝土管，使用了具有内部模具（21）和外部模具（22）的模板模具（20）。内模（21）在例如由钢制成的刚性内模壳（25）和例如由橡胶制成并且用作中空制品的模板的可弹性变形的内模壳（27）之间，具有内模。压力室（26）可以容纳液压介质。外部模具（22）包括例如由钢制成的单件式刚性外部模具壳体（28）和用作中空制品的模板的例如由橡胶制成的可弹性变形的外部模具壳体（30），在两个壳体之间同样形成有外部压力室（29），液压介质可以容纳在该外部压力室中。为了将纵向和环形预应力施加到中空制品上，首先，将纵向加强件压在预压实的新鲜混凝土上，然后通过模具的径向膨胀对环形加强件施加压力。<图像>

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公开/公告号DE3325075A1

专利类型
公开/公告日1985-01-24

原文格式PDF
申请/专利权人 DYCKERHOFF & WIDMANN AG;
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申请/专利号DE19833325075
发明设计人 VERZICHT DES ERFINDERS AUF NENNUNG;
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申请日1983-07-12
分类号B28B21/60;F16L9/08;B28B21/78;B28B21/18;E03F3/04;B28B21/82;
国家 DE
入库时间 2022-08-22 07:57:40

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