Erecting segmental spans
阅读：943发布：2021-01-08
专利汇可以提供Erecting segmental spans专利检索，专利查询，专利分析的服务。并且There is disclosed a technique for erecting segmental bridge spans. Means are provided for temporarily connecting the segments to each other in preparation for permanently joining the same together. The temporary connectors incorporate a pivotal connection, capable of adjustment under load, allowing relative adjustable pivotal movement between the movable segment and the stationary segment. The adjustable feature of the pivot connection allows the segments to be shifted for close mating engagement.，下面是Erecting segmental spans专利的具体信息内容。
1. A method of erecting a segmental span comprised of first and second adjacent interfitting modules including the steps of stationarily supporting the first module above an underlying surface; attaching connection parts to the first and second modules to be abutted and interfitted, the connection parts providing a pivotal connection defining a path of pivotal movement of the second module toward and away from the first module; positioning the second module adjacent the first module at a first angular position and engaging the connector parts; adjusting the path of pivotal movement of the second module for affecting the interfitment of the modules; pivoting the second module relative to the first module through the adjusted path of movement to a second position abutting and interfitting the modules; supporting the second module from the first module; and then installing a discrete connector between the modules for permanently joining the same.
2. The method of claim 1 further comprising the step of removing the connection parts from the modules after the installing step.
3. The method of claim 1 wherein the path adjusting step comprises the step of moving the pivotal connection relative to only one of the modules while the connector parts are engaged.
4. The method of claim 3 wherein the moving step comprises linearly moving the pivotal connection relative to the first module.
5. The method of claim 1 wherein the installing step comprises threading elongate tensile elements through the modules.
6. A structural installation comprising first and second adjacent interfitted modules including means for permanently attaching the modules together; and means for temporarily joining the modules together in load supporting relation in preparation for permanent attachment including first and second mating connections providing a pivot defining a path of movement of the first module toward and away from the second module, the first connection comprising a base rigid with one of the modules, a first mateable connector part, mounted on the base for movement relative thereto, in mating engagement with the second connection, and means for altering the path of pivotal movement of the first module including means for adjusting the first mateable connector part relative to the base while the connections are mated.
7. The installation of claim 6 wherein one of the connections provides a first half of the pivot and the other connection provides a second half of the pivot, the second pivot-half being mated with the first pivot-half and wherein the adjusting means comprises means for moving the pivot relative to the second module.
8. The installation of claim 6 wherein the first connection comprising a frame carrying the first mateable connector part and means mounting the frame on the base for limited movement relative thereto along substantially perpendicular paths.
9. An erection shoe for temporarily connecting a movable span module to a stationary span module comprising a frame having a pivot-half thereon; a member for mounting the frame on one of the modules including means connecting the member and the frame providing a path of substantially linear pivot-half movement through a limited predetermined range; and power means carried by the frame for adjusting the position of the pivot-half through the predetermined range.
10. The erection shoe of claim 9 wherein the connecting meAns provides for pivot-half movement in another path generally perpendicular to the substantially linear path and the power means comprises means for adjusting the position of the pivot-half in two directions along the paths.
11. The erection shoe of claim 10 wherein the axis of the pivot-half and the two paths are substantially mutually perpendicular.
12. The erection shoe of claim 9 wherein the connecting means comprises means for mounting the frame for pivotal movement about an axis, means restraining the pivotal movement to a limited predetermined range and means for mounting the frame for substantially linear movement in a direction generally perpendicular to the pivot axis.
13. A method of erecting a segmental span comprised of adjacent modules including the steps of attaching connection parts to first and second modules to be abutted, the connection parts providing a pivotal connection; positioning the first module adjacent the second module at a first angular position and engaging the connector parts; then pivoting the first module relative to the second module about an axis of the pivotal connection to a second position aligned with the second module and defining a load support through the connection parts wholly supporting the second module from the first module; then installing a discrete connector between the modules for permanently joining the same; and then removing the connection parts from the modules.
14. Apparatus for temporarily connecting interfittable movable span modules to stationary span modules comprising a member for attachment to one of the modules; a pivot-half carried by the member and defining an arcuate path of movable module movement toward and away from the stationary module; and means carried by the member for alternating the arcuate path of movement for affecting the interfitment of the modules.
15. The apparatus of claim 14 wherein the altering means comprises means mounting the pivot half on the member for movement through a limited predetermined range, and means for selectively moving the pivot half through the range.
16. The apparatus of claim 15 wherein the mounting means includes means mounting the pivot half on the member for substantially linear movement.
17. The apparatus of claim 16 wherein the mounting means includes means mounting the pivot half on the member for limited pivotal movement in a path substantially perpendicular to the path of linear movement.
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