PVE 2350VM HYDRAULIC VIBRATORY HAMMER ON RAILWAY STATION PROJECT IN LEIPZIG

For the entry and exit of the railway station tunnel project in Leipzig originally a design of a
diaphragm wall was calculated. The diaphragm wall ends in a static defined depth. To make the construction waterproof the choice was made for a concrete floor retained by anchors. An alternative -a time and costs worthy construction method - was offered to the awarded contractor by our agent, BVV Spezialtiefbautechnik Vertriebs GmbH in Munich. The alternative anticipated in securing the site by installing an anchored sheet pile wall which is placed in the water resistant clay layer . In this way the underground building will build in a open excavated construction controlled with a dewatering system.
Because of the depth of the clay layer it was necessary to use sheet piles with a length of 25 to 36 meters. For this sheet pile length, a real challenge, BVV proposed to use a PVE vibratory hammer with variable moment to install the sheet piles. To help the sheet piles in these heavy conditions to go down easier, water jetting was used with mixed air. The vibratory hammers which were used are a PVE 40 VML for sheet piles up to 31 meters and a PVE 2350 VM for sheet piles up to 36 meters. Used is a LIEBHERR LRB 255 with a hydraulic leader. Because of this hydraulic adjustable leader it is possible to adjust the sheet piles in all directions but always 100% dead straight even during installing. The vibratory hammer PVE 2350VM is a high frequency with variable moment vibro. The 2350VM produces a centrifugal force from 0 to 3000 kN and is powered by a PVE 1400 (1400 l/min, 1400 HP) power unit. During the installation of the sheet piles the following
parameters were monitored in the crane; frequency, flow, pressure and the relation time/depth.

	Home - Jobreports
	ALL DISCIPLINES IN ONE HAND - DIESEKO POWER UNITS - Leipzig - Nederland - Korea - Singapore - Portugal - Switzerland - 4080