#hydraulic jacking

Tricky flat jacking operation completed successfully by Hydra Capsule’s purpose-built flat jacking and injection systems.

The works consisted of 21 off. Transfusion flat jacks rated at 40 tonnes.

Therefore all the jacks were interlinked and synchronously loaded to the specified defined loads, displacements/deflection and limits.

Once competed, each jack (which were jacked/lifted/preloaded with hydraulic fluid) was individually transfused using a double-release valve arrangement, to inject grout and release temporary fluid until the flat jack was fully transferred. Find detailed explanation of the above flat jacking operations at http://www.hydra-capsule.com/flat-jacks .

Hydra-Capsule have recently completed a major synchronised jacking, and grout bags for the half joint strengthening. The project involved working with the Highway Agency and Network Rail hand-in-hand due to the unusual bridge structure(s). Hydra Capsule were appointed to design and manufacture 84 number 50 tonnes screw ram locking-collar hydraulic jacks, which in additional were energised and hydraulically jacked by Hydra Capsules’ synchronised jacking and individually controlled by our own computerised system, using precise load and movement displacement (LVDTs) real-time monitoring units.

Major Project completed by Hydra Capsule Limited at Reading Station Development.

Hydra Capsule recently completed temporary propping throughout the Reading Station, ranging from supporting a complete footbridge, while under demolition works, to retaining over-loaded ground conditions. With additional hydraulic jacking designs to hydraulic lift and support over tolerance movements on the station's structural steelworks.

Hydra Capsule have become a world leader within design, manufacturing and supplying of flat jacks. By manufacturing our flat jacks within our “in-house” purpose-built workshop. We are able to test all our jacks to British standard legislations, all within our United Kingdom premises.

In addition, Hydra Capsule, as standard, will incorporate digital monitoring to our flat jacking systems to record movement, displacement and pressure / load data to offer the most professional service throughout the United Kingdom. More details at http://www.hydra-capsule.com/flat-jacks

  Hydra Capsule is a leading subcontractor for manufacturing, supplying and installation of flat jacks. Hydra Capsule originally founded the company, on flat jacks alone, however over 30 years of experience within this market, have grown and development all heavy lifting equipment to suit all lifting applications, making us one of the market leaders for flat jacking.

 Description of Flat Jack

The flat jack itself consist of 2 main components; steel moulded capsule and a pair of thrust plates. The standard shape of a flat jack is round, however square and oval shape are available in special circumstances. The jack has an inlet and outlet connections to inject fluid and bled the capsule fully.

“The flat jack is the lowest height jack in the world that can exert forces up to 850 tonnes”

Depending of the application, an range of fluid can be injected into the jack(s) under pressure; water, oil, cementitious grout and resin. With an working pressure of a maximum 150 bars, with a stroke range from 25mm to 35mm dependant of the manufactured jack.

If existing structures have to be held up by means of piles or beams, it is sometimes necessary to preload the supporting section. This preloading can be effected with a flat jack, which is generally left behind in the structure.

Application of Flat Jacks:

lifting of structures

jacking of structures – pre-loading and inducing a permanent force to foundations, piles, beams, columns, bearings, seismic isolators and steelworks

holding of structure – temporary propping / works, new foundations and  etc

Weighing and Measure of forces

Balance force loadings

Hydra Capsule can offer a complete contractual installation service throughout the United Kingdom, Ireland and Europe. With our vast knowledge and experience within the sector of jacking works we can meet all clients requirements at a professional level based on our 30 years of trading.