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Building of multispan bridges or the like works, by the cantilever method

阅读:973发布:2022-07-09

专利汇可以提供Building of multispan bridges or the like works, by the cantilever method专利检索,专利查询,专利分析的服务。并且A device for use in building the superstructure of a multispan civil engineering work, such as a bridge or elevated road or track, which superstructure comprises at least one beam extending on both sides of a pier and resting upon the latter, the said beam being produced in successive sections or voussoirs which are placed in position by cantilevering in opposite directions starting from an initial or pier voussoir which caps the said pier, the said device comprising a raised scaffold having a median support adapted to rest on the said pier, wherein the said median support comprises a central bearing member which is adapted to rest on the said pier voussoir and two additional bearing members which are adapted to respectively rest on the two first voussoirs which border on the said pier voussoir, and wherein means are provided for anchoring said additional bearing members to the respective voussoir on which they are adapted to rest.,下面是Building of multispan bridges or the like works, by the cantilever method专利的具体信息内容。

1. In combination with a superstructure of a multispan civil engineering work under construction, such as a bridge or an elevated road or track, which superstructure comprises at least one two-arm beam which extends in a longitudinal direction substantially symmetrically on both sides of a previously erected pier and rests upon the latter, which two-arm beam comprises a plurality of longitudinally-consecutive voussoirs including an initial pier-voussoir which caps the said pier and two first voussoirs respectively consecutive to and bordering on said piervoussoir on either side thereof, a device for successively placing the voussoirs in position in cantilever fashion in opposite directions from said pier, said device being of the kind comprising an elongated horizontal scaffold extending in the longitudinal direction of the two-arm beam and above the same, said scaffold presenting two longitudinally-spaced end-regions and a median region located between and remote from said two endregions, and an end-support extending from an end-region of the scaffold for supporting said scaffold on an already-completed part of the work, wherein the improvement comprises a median support integral with said scaffold and extending from the median region thereof for supporting said scaffold on the said pier, said median support being a compact concentrated bearing unit subdivided into three longitudinally-consecutive and adjacently grouped bearing members, namely a central bearing member overtopping the said pier-voussoir, and two additional bearing members located adjacent said central bearing member on either side thereof and respectively overtopping the said two first voussoirs next consecutive to and bordering on the said piervoussoir, and means for anchoring said two additional bearing members to said two first voussoirs respectively.
2. A device as claimed in claim 1, further comprising means for adjusting the attitude of said median support and causing it to occupy either a first position in which it rests, via said central bearing member, solely on said pier-voissoir, or a second position in which it rests, via said two additional bearing members, solely on said two first voussoirs which border on the said pier-voussoir.
3. A device as claimed in claim 1, comprising further anchoring means for connecting an end region of said scaffold to an already-completed part of the work.
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