GB2413353A

GB2413353A - Tensioned structural propping system

Info

Publication number: GB2413353A
Application number: GB0508071A
Authority: GB
Inventors: Serge Janjic
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-24
Filing date: 2005-04-22
Publication date: 2005-10-26
Also published as: GB0508071D0; GB0409215D0

Abstract

A structural propping system, has a pair of horizontal supports 2 and a pair of compressive and tensile elements 1 and 3, which when assembled form a solid structure the purpose of which is to temporarily transmit loading from one end to the other while the permanent structures are being installed. The propping system is brought into the area of works in individual pieces, 1, 2, and 3, and then assembled in configuration as shown, within the structural element 6 or similar location of required propping works. Upon assembly of the propping system, the compressive forces applied at the tips of cross supports 2 are counteracted by a couple of forces within prop 1 and tensile rod 3. Once the system is loaded the existing wall 6 is removed and permanent supports 5 installed.

Description

1 241 3353

TENSIONED STRUCTRAL PROPPING SYSTEM

This Invention relates to the Tensioned Structural Propping System.

Structural Props are devices whose purpose is to provide temporary support to various elements of the structure, its shattering, walls floors etc etc These devices are commonly used to support say a shattering deck on which reinforcement is being assembled for the purposes of reinforced concretes structures' creation, or to support further horizontal props which are then inserted into walls when an opening is being constructed within the wall. In particular in the case of the walls and temporary supports thereto, there is usually assembled a line of vertical props on one side of the wall and another line on another side of the wall, and then a further series of horizontal props inserted into the wall, directly above the level of the proposed opening. The horizontal props are usually referred to as "needles" and the vertical props have acquired a generic name of"accrow props".

In the case where there are heavy loads required to be supported (ea. A wall in the basement of a say five or six storey building) it is often required that a separate foundation is constructed under the each line of the props on each side of the subject wall, and it is almost always the case that the props have to be assembled on each side of the wall in question.

This obviously can lead to problems if the access is only available to one side of the wall in question as well as adds costs to the problem if the foundations have to be specially constructed for the purposes of a temporary support operation which often last no more than a few days.

Furthermore, it is often the case that there is no access available to the areas above and below the required area of opening inside the wall (eg in a block of flats where the abovementioned needles would have to be applied inside the properties belonging to the above and below neighbours) .

According to the prescut invention there is provided a Tensioned Structural Propping System which can be assembled and inserted into the subject structure from one side only, and does not necessitate an installation of any temporary foundations structures.

A specific embodiment of the invention will be now described by way of example with reference the accompanying drawing in which; Figure I shows in sectional elevation the assembled Tensioned Structural Support System set inside a wall in an assumed real-life situation, Figure 2 shows in sectional elevation the current typical propping arrangement in respect of a similar structure, using the props-and-needles system. 2.

Referring to the drawing the Tensioned Structural Propping System comprises of a set of structural elements namely prop section 1 which is connected into the horizontal arms 2, at the end of which is the tensioning strut 3. When the thus assembled propping system is inserted into the area of the structure to be supported (eg wall 6), then the working length of the prop I is adjusted by means of jacking mechanism 4, and then the tensioning strut 3 locked in length, after which a prc-determined force is applied by the jack set inside the prop I (this action can be inverted to suit site conditions where the prop 1 can be locked to predetermined length and the tensioning strut 3 tightened to pre-determined force).

The arms 2 then set firmly into the wall, pushing the bottom and top ends of the walls apart until equilibrium with the external forces is reached inside the propping mechanism, at which time the central section of the wall in question can be removed.

Depending on the length of the opening required, a number of Tensioned Structural Propping Systems can be set next to each other, in a virtually unlimited length of line of assembly. The such assembled propping system then blocks access to only one side of the proposed opening and therefore offers full uninhibited access to the other side of the wall which then results in easier handling of the permanent structural support elements.

The so assembled system can then hold the weight of the supported wall until the permanent support (eg steel beams 5) is inserted and loaded. At this time, the locks are released and the jack 4 un-locked, which then slowly releases the loading from the supported structures onto the permanent support.

The Tensioned Structural Propping System is then packed and moved on to next position, storage or next site.

The traditional way of providing this type of temporary support would be by means of installation of temporary support foundations 7 and needles 8, via temporary props 9.

The assembled Tensioned Structural Propping System is shown in Figure 1.

Figure 2. denotes the typical traditional method of offering temporary structural supports.

Figure 3 denotes the four main components of the Tensioned Structural Propping System.

Claims

I A Tensioned Structural Propping System comprising horizontal support arms supported by compressive prop and tensile strut elements which when assembled form a soLd structure, the purpose of which Is to temporarily transmit loading from one end to the other while the permanent structures are bemg installed.
2 A Tensioned Structural Propping System as claimed m Claim I where the prop Is supported off the section of the actual object bomg supported.
3 A Tensioned Structural Proppmg System as claimed m Claim I or Claim 2 wherem the compressive prop can be fitted with a hydraulic Jack winch can be loaded to a pre determined compression force.
4 A Tensioned Structural Propping System as claimed m Claim 2 or Claim 3 wherein the tension strut can be fitted with a hydraulic jack which can be loaded to a pre-determmed tension force.
A Tensioned Structural Propping System as claimed m Claim 3 or Claim 4 wherem the propping system can be fully assembled, loaded and made ready for use, from one side of the supported objects only.
6 A Tensioned Structural Propping System as claimed m Claim 4 or Claim 5 wherein the propping system does not require any temporary foundations or similar temporary support structures.
7 A Tensioned Structural Proppmg System as claimed m Claim 5 or Claim 6 wherem the pre-loadmg of the compressive prop or tensile strut ensures that there Is no deflection or subsidence of the object bemg supported.
8 A Tensioned Structural Propping System as claimed In Claim 6 or Claim 7 wherem the overall height of the propping system can match the height of the opening bemg created.
9 A Tensioned Structural Proppmg System as claimed m Claim 7 or Claim 8 wherem the force applied to the prop or tension strut can be varied If necessary to result m hftmg of the supported structures.
A Tensioned Structural Propping System as claimed m Claim 8 or Claim 9 wherem the entire propping system is contained wthm the height of one dwelhng or premises.
11 A Tensioned Structural Proppmg System as claimed m Claim 9 or Claim 10 wherein the mstallaton of the propping system does not necessitate interference with floors or walls of the property directly above or directly below the subject property.
12 A Tensioned Structural Proppmg System as claimed m Claim 10 or Claim 11 wherem the propping system offers full and undisturbed access to one of the two sacs of the works.
13 A'l'ensoned Structural Proppmg System substantially as described herein with reference to figures I and 3 of the accompanying drawing.