Unevenness of temporary bearings

(1) For prestressed bridges built by the incremental launching method, unless other values are given in the project specification, the following values of vertical deflections of temporary bearings should be taken into account:

mm longitudinally for one bearing, the other bearings being assumed to be at the

2,5 mm transversally for one bearing, the other bearings being assumed to be at the theoretical level (Fig. 4.1 - b).

These values may be adjusted for specific cases depending on the level of the quality assurance (see 2.2(5)-b) of ENV 1991-1).

(2) These two vertical deformations are mutually exclusive and the correponding values should be considered as characteristic values.

10 mm a) Longitudinal deflection

10 mm a) Longitudinal deflection

2,5 mm b) Transverse deflection

Figure 4.1: Longitudinal and transverse deflections of temporary bearings for bridges built by the incremental launching method

2,5 mm b) Transverse deflection

Figure 4.1: Longitudinal and transverse deflections of temporary bearings for bridges built by the incremental launching method

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