GB2556109A

GB2556109A - Safe working environment container

Info

Publication number: GB2556109A
Application number: GB1619654.5A
Authority: GB
Inventors: Standing Nigel
Original assignee: Wsp Uk Ltd
Current assignee: Wsp Uk Ltd
Priority date: 2016-11-21
Filing date: 2016-11-21
Publication date: 2018-05-23
Anticipated expiration: 2036-11-21
Also published as: GB2556109B; GB201619654D0

Abstract

A safety barrier is provided for use at construction sites. The safety barrier has a side wall 102 connected by a hinge to an end wall 104. In a first configuration, the end wall is arranged at a right angle to the side wall so that the safety barrier takes a form of two walls of an intermodal container. In a second configuration, the end wall is arranged at an obtuse angle to the side wall so that the side wall and first end wall act as a barrier. The safety barrier further comprises a piling gate 108 for receiving sheet piling 302. The piling gate may comprise a first beam 108 and a second beam 110 spaced from the first beam. The first beam may comprise a false work soldier. The barrier may comprise a kentledge holder 114 attached to the end wall. There may be second end wall 106 connected by a hinge to the side wall.

Description

(54) Title of the Invention: Safe working environment container Abstract Title: Container providing a safety barrier (57) A safety barrier is provided for use at construction sites. The safety barrier has a side wall 102 connected by a hinge to an end wall 104. In a first configuration, the end wall is arranged at a right angle to the side wall so that the safety barrier takes a form of two walls of an intermodal container. In a second configuration, the end wall is arranged at an obtuse angle to the side wall so that the side wall and first end wall act as a barrier. The safety barrier further comprises a piling gate 108 for receiving sheet piling 302. The piling gate may comprise a first beam 108 and a second beam 110 spaced from the first beam. The first beam may comprise a false work soldier. The barrier may comprise a kentledge holder 114 attached to the end wall. There may be second end wall 106 connected by a hinge to the side wall.

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SAFE WORKING ENVIRONMENT CONTAINER

Field of the Invention

This invention relates to a container unit that can be used as a safety barrier, particularly for use 5 in railway environments.

Background

The safety of workers in the engineering and construction industries is of the utmost importance. When working with heavy machinery or near roads or railways with large, fast-moving vehicles, the potential for lethal accidents to occur can be very high. This is particularly the case for railway maintenance crews operating in the vicinity of tracks that are in operation.

It may be a legal requirement in some countries to erect a safety barrier between an operational track and an area where rail maintenance work is to take place before that work can commence. Accordingly, safety barriers for trackside use are known. Many such known safety barriers are clamped to the track base and assembled in a time consuming and complicated manner. These barriers generally comprise vertical posts connected by beams, with the barrier extending to a height of up to 1 metre. GB 2 333 795 A describes a safety barrier having such a design.

Safety barrier designs of the above type prevent a railway operative (engineer or surveyor, for example) from accidentally falling into the path of an oncoming train, but do little to protect the operative from debris or railway ballast dislodged by the passage of the train. Furthermore, for more elaborate trackside operations, such as excavation or those involving piling, designs of the above type provide no support against collapse of the working area.

Aspects of the present invention provide elegant, quick-to-install solutions to the problem of how to provide a safety barrier for construction work environments, particularly those near railways.

Other features and advantages of exemplary embodiments of the present invention will be 25 apparent from the following description taken in conjunction with the accompanying drawings.

Summary

In accordance with a preferred embodiment of the invention, a safety barrier is provided for use at construction sites. The safety barrier comprises a side wall connected by a first hinge at a first end to a first end wall. In a first configuration, the first end wall is arranged at a right angle to the side wall so that the safety barrier takes a form of two walls of an intermodal container. In a second configuration, the first end wall is arranged at an obtuse angle to the side wall so that the side wall and first end wall act as a barrier. The safety barrier further comprises a piling gate for receiving sheet piling.

In some embodiments, the piling gate comprises a first beam arranged across a length of the side wall and spaced apart therefrom. In such embodiments, the piling gate further comprises a second beam substantially the same as the first beam arranged parallel to and displaced in a height dimension of the side wall from the first beam. The first beam may also be arranged substantially halfway up the height of the side wall and the second beam is arranged at a lower edge of the side wall and the piling gate may further comprise a third beam substantially the same as the first beam arranged parallel to the first beam at an upper edge of the side wall.

Some embodiments may provide that the first beam comprises an RMD® soldier. These and other embodiments may comprise means for connection to a turnbuckle are provided on both the side wall and the first end wall, wherein the means for connection are arranged so that connection of a turnbuckle therebetween maintains the first end wall at the obtuse angle.

In some embodiments, a castor wheel is provided toward a distal end of the first end wall. Upper edges of the side wall and/or the first end wall may be adapted to have fencing coplanar with the side wall attached thereto. The safety barrier may also comprise bracing to maintain the safety barrier in the first configuration and/or a kentledge holder attached to the first end wall.

In further embodiments, the safety barrier also comprises a second end wall connected by a second hinge to the side wall at a second end opposite the first end. In the first configuration, the second end wall is arranged at a right angle to the side wall so that the safety barrier takes a form of three walls of an intermodal container. In the second configuration, the second end walls are arranged at an obtuse angle to the side wall so that the side wall and end walls act as a barrier. In some such embodiments, means for connection to a turnbuckle are provided on both the side wall and the second end wall, wherein the means for connection are arranged so that connection of a turnbuckle therebetween maintains the first end wall at the obtuse angle.

In some embodiments, a castor wheel is provided toward a distal end of the second end wall and/or an upper edge of the second end wall is adapted to have fencing coplanar with the second end wall attached thereto.

The safety barrier may be adapted to detachably connect to another similar safety barrier.

Some embodiments may take the form of a kit comprised of first and second safety barriers, as described in the above embodiments. When the first and second safety barriers are in their first configurations, the end wall of the first safety barrier is adapted to detachably connect with the side wall of the second safety barrier and the end wall of the second safety barrier is adapted to detachably connect with the side wall of the first safety barrier to take a form of four walls of an intermodal container. When the first and second safety barriers are in their second configurations, the end of the side wall of the first safety barrier opposite its end wall is adapted to detachably connect with the end of the side wall of the second safety barrier opposite its end wall.

In some embodiments, the kit comprises a stabilisation member adapted to attach to the piling gate. The stabilisation member may comprises a RMD® turnbuckle frame and a kentledge holder. In some such embodiments, the kit may also comprise waling attachable to the piling gate and suitable for providing an additional piling gate for receiving additional sheet piling at right angles to the first beam.

Various embodiments are now described by way of example only, with reference to the accompanying drawings.

Brief Description of the Drawings

Figure 1A is a lateral view of a safe working environment container in a first configuration suitable for transportation.

Figure IB is a plan view of the safe working environment container of Figure 1 A.

Figure 2A is a lateral view of a safe working environment container in a second configuration 25 suitable for use at a work site when no excavation or piling is required.

Figure 2B is a plan view of the safe working environment container of Figure 2A.

Figure 3A is a lateral view of a safe working environment container in a third configuration suitable for use at a work site with excavation or piling.

Figure 3B is a plan view of the safe working environment container of Figure 3 A.

Figure 4 is a perspective view of the safe working environment container similar to that of Figure 3 A.

Figure 5A is a lateral view of a safe working environment container including additional trenching support structures.

Figure 5B is a plan view of the safe working environment container of Figure 5 A.

Figure 6A is a lateral view of a safe working environment container system comprising two safe working environment containers joined together.

Figure 6B is a plan view of the safe working environment container system of Figure 6A.

Figure 7 is a plan view of two single end wall safe working environment containers joined in a configuration suitable for transportation.

Detailed Description

The following description provides details of a containerised unit allowing safe protection to operatives while being in a form factor that is easy to transport and quick to deploy. The container unit, referred to as a Safe Working Environment Container (SWEC), allows full compliance with integrated piling, trenching and excavation. The SWEC is particularly suited to use in railway environments, where it provides a safe zone for operatives while allowing rail network operations to be maintained. Extensive construction may also be undertaken closer to operational tracks than prior art safety barriers.

This container unit can be delivered to site by road vehicle or trackside via rail container rolling stock and off-loaded by crane or a vehicle fitted with lifting apparatus such as a hydraulic crane. Notable examples of such vehicles are produced by HIAB®. Once in position, the container unit provides immediate protection to construction activities, which are enhanced by placing safety fencing such as HERAS® safety fencing to the top rail of the SWEC unit to provide an additional safety barrier.

The SWEC unit that is delivered to site takes the form of an intermodal container with no roof or base and without one of the side walls. Intermodal containers are known by a variety of different names. For example, the terms shipping container, cargo container, freight container, or even simply container are frequently used. Many intermodal container sizes are of standardised size.

For example, the ISO 668 series of sized. Transportation bracing may be in place to stabilise the framework via a rapid tie bar system at roof level and at the missing side wall and turnbuckles are used to prevent strain being placed on the unit and also for final adjustment to line and level the container.

Figure 1A is a lateral view of a SWEC in a first configuration in which the SWEC is suitable for transportation. The SWEC comprises a container side wall 102 connected at opposite ends to a forward container wall 104 and a rear container wall 106. Container side wall 102 may be reinforced by use of central waling 108 and lower waling 110 extending across the length of side wall 102. It will be recognised that central waling 108 and lower waling 110 serve more use when installed on site, as the loads on the container during transportation are low. Additional upper waling 124 may also be provided along the top edge of side wall 102. Central waling 108, lower waling 110 and upper waling 124 may take the form of metal (most commonly steel) beams connected to the ends of container side wall 102, such as falsework soldiers. In a preferred aspect, the falsework soldiers are produced by RMD®, which provide flexibility in that a variety of different support members or other RMD® soldiers may interconnect with the apertures provided in the holes of a RMD® soldier. Struts 126 between upper waling 124 and central waling 108 and between central waling 108 and lower waling 110 ensure rigidity.

Lateral bracing 112 is provided in place of a further side wall to prevent relative movement of the forward and rear end walls 104 and 106 during transit. A rapid tie bar system is used to ensure easy attachment and removal of lateral bracing 112. As shown in the figure, the lateral bracing 112 may comprise four bars each connected at one end to a central hub and at the other end to the end furthest from container side wall 102 of either forward container end wall 104 or rear container end wall 106 at the top or bottom. It will be appreciated that one or more turnbuckles may be used as a means for connection to the end walls 104 and 106 instead of tying to allow greater stability and adjustment.

Also shown in Figure 1A are kentledge holders 114 fixed to the internal faces of both end walls 104 and 106. These holders need not be in place during transportation; however their presence may nonetheless speed up deployment once at the work site. Kentledge itself need not be transported as construction sites generally have plentiful supplies of suitable kentledge material (e.g. track ballast) which may be placed in kentledge holders 114 and removed once the work has been completed.

Figure IB shows a top down view of the same SWEC unit as Figure 1 A. From this view, upper bracing 116 having substantially the same construction as lateral bracing 112 and attached to the top of end walls 104 and 106 is also visible. The two bars connected to the distal ends (i.e. furthest from wall 102) of container end walls 104 and 106 are connected by tying means. The two bars connected to the proximal ends of container end walls 104 and 106 are connected using turnbuckles 118 to connection facets 120 on the end walls.

From Figure IB, it can also be seen that central waling 108 (and unseen lower waling 110) is spaced apart from container side wall 102 by gap 122. Gap 122 may act as a piling gate if sheet piling is used for excavation support.

The intermodal container form factor advantageously allows existing transport vehicles to be used to transport the SWEC. Despite their large size (a property that is useful in a safety barrier), the SWEC can be easily and quickly deployed.

After transportation to the work site, the SWEC of Figures 1A and IB can be offloaded from a road, marine or rail vehicle using a crane or other suitable lifting apparatus and placed where required. Bracing 112 and 116 can be removed and kentledge placed in kentledge holders 114. Such an arrangement may be useful for providing a safety barrier for work environments where little disturbance to earth is envisaged.

Figure 2A is a lateral view of the SWEC of Figure 1A after delivery to a work site. The SWEC is the same as that of Figure 1A except bracing 112 and 116 has been removed and kentledge 202 placed in kentledge holders 114. In this example, kentledge 202 takes the form of builder’s bags 202 fdled with granular fill such as track ballast from the environment of the work site. A disposable duck-bill anchor may also be used. In addition to the kentledge, upper waling 124 is connected at either end of container side wall 102 so that it is arranged along the top edge of side wall 102. Upper waling 124 is optional, and provides extra reinforcement when no piling is required. Struts 126 between upper waling 124 and central waling 108 and between central waling 108 and lower waling 110 ensure rigidity.

Figure 2B shows a top down view of the same SWEC unit as Figure 2A. Castors 204 may be provided toward the distal end of container end walls 104 and 106 to assist rotation of the ends walls 104 and 106 about their hinged connections to container side wall 102. Such rotation allows a longer barrier and larger safe working area to be formed by the SWEC.

Figure 3 A shows the SWEC of Figure 2A in which container end walls 104 and 106 have been externally rotated to provide a longer barrier. Sheet piling 302 is driven into place in the piling gate formed by gap 122 between central and lower walings 108 and 110 and the container side wall 102. Upper and central waling 108 and 110 act in concert with container side wall 102 to provide lateral restraint to any movement of sheet piling 302 so that it may be precisely driven in as excavation proceeds. In an exemplary aspect, sheet piling 302 may be lightweight sheet piling.

Figure 3B shows a top down view of the same SWEC unit as Figure 3A. Sheet piling 302 is initially driven to engage with the ground through gap 122. Turnbuckles 304 connect connection facets 120 to central and lower walings 108 and 110 at waling connectors 306 to provide restraint and adjustment in the placement of the end walls 104 and 106.

Figure 4 is a perspective view of the safe working environment container similar to that of Figure 3A. From this view, one can clearly see how the SWEC partitions its surroundings to provide a safe working side 402, protected from an opposing side 404 on which a hazard such as an active railway line, may be present. The example in Figure 4 shows a different arrangement for maintaining end walls 104 and 106 in an open position. Instead of using connection facets 120 on end walls 104 and 106 and turnbuckles 304 to connect to central and lower walings 108 and 110, alternative connection facets 406 on end walls 104 and 106 hold end walls 104 and 106 by means of rigid bars 408 between connection facets 406 and side wall 102.

Trenching and excavation adjacent to an operational railway are among the most hazardous construction operations as any man-made cut or trench may cause instability in the track formation as earth is removed. Use of sheet piling 302 prevents ground movement in the vicinity of an excavation site to remove that instability.

The SWEC unit allows a varied range of temporary works to be carried out using one unit that will meet with site specific requirements, while also reducing the physical boundary region between the work site and the operational railway and the manual handling risks associated with prior art safety barriers.

The deployment procedure is quick and safe and work can immediately progress once the SWEC unit is offloaded. Using a SWEC in accordance with the invention reduces the cost of the temporary works equipment, ensures full working protection during the complete construction process and allows adjacent activities to be performed without any interference from construction operations.

The SWEC unit allows extended working hours which are an advantage during excavation as faces are only left open for a minimum period of time and the excavation is fully supported. With some construction operations, particularly on railway networks, there is a set window in which operatives may be on site. Taking time to set up safety equipment, such as barriers, during that window reduces the amount of time in which other operation may be performed. Once sited, the SWEC unit allows the immediate mobilisation with no interface with the operational railway. This earlier introduction of excavation means that the work can be carried out more quickly and allows base construction to progress more readily with midi excavators that are screened from train drivers on the operational track.

As the excavation proceeds, the sheet piling 302 within the unit is toed-in to support the excavated face.

Figure 5A shows a lateral view of a SWEC including additional trenching support structures. Compared to the SWEC of Figures 3 A, 3B and 4, additional waling 502 and 504 is connected at right angles to central waling and lower waling 108 and 110. Waling 502 and 504 may each comprise two beams, such as falsework soldiers arranged at the same height as central and lower waling 108 and 110. In a preferred aspect, the falsework soldiers are produced by RMD®. Additional sheet piling 506 can be inserted between the piling gate formed by waling 502 and 504 so that a trench box may be formed behind the barrier. To provide lateral support for the additional piling gate, a falsework support frame 508 may be provided. To interoperate with the preferred aspect of the additional piling gate, the falsework support frame 508 preferably comprises a RMD® turnbuckle frame. Falsework support frame 508 comprises upright beam 510 attachable to waling 502 and 504 and flat beam 512 having an end connected to a lower end of beam 510 at a right angle thereto. Turnbuckle 514 is connected between the distal ends of beams 510 and 512 to provide rigidity. Kentledge holder 516 is provided at the distal end of beam 512 to anchor and stabilise the additional piling gate.

Figure 5B shows a top down view of the same SWEC unit as Figure 5A. From this view, it can be clearly seen how additional waling 502 and 504 is arranged at a right angle to waling 108 and 110. Turnbuckle 518 is connected between waling 108 and additional waling 502 to provide further rigidity. Falsework support frame 508 is arranged substantially parallel to waling 108 and 110.

Use of a ‘trench box’ is a reliably industry standard method that comprise of a robust two-sided mechanical support system. The SWEC unit with the flexibility of the RMD® soldiers and waling can easily be adapted into a full trench box. The trench box is designed as a temporary earth retaining structure allowing the sides of the excavation to be cut vertical or as near vertical as practicable. This quick and easy method ensures ground stability within the trench and helps to minimise the excavation working area to avoid damage to neighbouring structures and any utilities within the adjacent ground. Accordingly, operatives can undertake the installing of utility pipes and services in a controlled environment having ground movement restrained at the external face.

Figure 6A shows a lateral view of two SWECs 600A and 600B joined together to form a longer barrier. Such a system is advantageous for use with larger, more involved works. The left hand side SWEC 600A is substantially the same as the SWEC of Figures 5A and 5B with end wall 106 removed. The right hand side SWEC 600B is substantially the same as the SWEC of Figures 5A and 5B with end wall 104 removed. The two SWECs 600A and 600B are placed side-by-side and attached together by means of turnbuckles 602 connecting waling connectors 306. If further shielding is needed (e.g. to prevent a train driver from becoming distracted by the work), side wall fencing 604 can be attached to the top edge of side wall 102 of both SWECs 600A and 600B. Side wall fencing 604 are reinforced together by clamps 606. End wall fencing 608 may also be attached to end walls 104 and 106 to provide additional shielding. In a preferred aspect, fencing 604 and 608 are HERAS® safety fencing.

One will appreciate that provided there is sufficient support, any number of SWEC units may be joined together to form longer barriers. Provision of safety fencing is not limited to multiple SWEC embodiments, so fencing 604 and 608 may also be used in conjunction with the SWECs of Figures 1A-5B.

Figure 6B shows a top down view of the same SWEC unit as Figure 6A. In addition to the features of Figure 6A further support is provided by support member 610 comprising turnbuckle frame 612 having kentledge container 614. Turnbuckle frame 612 is substantially the same as turnbuckle frame 508 and is attached to central waling 108 at right angles thereto. Any number of support members 610 may be arranged along the length of central waling 108 on either

SWEC. If further SWECs are joined together, additional waling 502 and 504 and additional support members may be employed to meet support requirements.

Alternative Aspects

Figure 7 shows a top down view of two SWECs 700A and 700B having single end walls and arranged in a configuration suitable for transportation. Each SWEC is substantially the same as the SWEC of Figures 2A and 2B without end walls 106 and without kentledge 202. As with the other embodiments, side wall 102 may be connected to end wall 104 by a detachable hinge 704. During transportation, the SWECs are attached together at detachable connections 702 so that the dual SWEC system takes the form of 4 sides of an intermodal container. This form allows the barrier to be easily transported by existing transportation vehicles and reduces or removes the need for additional transportation bracing.

Once at the site, each SWEC can be deployed separately. In this case, use of sheet piling 302 in the piling gate formed by the gap 122 between side wall 102 and waling 108 and 110 may provide sufficient support for the barrier. Alternatively or in addition, a support member substantially the same as support member 610 in Figure 6B may be attached at right angles to waling 108 and 110 at the end of side wall 102 to support the barrier.

The SWECs in Figure 7 may also be deployed together. In this way, a barrier similar to that shown in Figures 6A and 6B may be formed by first detaching the SWECs 700A and 700B by releasing detachable connections 704 and removing end wall 104 from one of the SWECs. The end of the side wall 102 of the SWEC 700B with the removed end wall 104 is connected at the end from which the end wall 104 was removed to the free end of the side wall 102 of the other SWEC 700A. Accordingly, a long barrier like that shown in Figures 6A and 6B can be formed by attaching the removed end wall 104 to the opposite end of the side wall 102 from which it was removed. Various supporting means such as sheet piling 302, waling 502 and 504, turnbuckle frame 508 and kentledge holder 516, and supporting means 610 may be used if required.

As many apparently different embodiments of the present invention can be made without departing from the scope thereof, it is to be understood that the invention is not limited to the specific embodiments thereof.

Claims

1. A safety barrier for use at construction sites comprising a side wall connected by a first hinge at a first end to a first end wall, wherein:

in a first configuration, the first end wall is arranged at a right angle to the side wall so 5 that the safety barrier takes a form of two walls of an intermodal container;

in a second configuration, the first end wall is arranged at an obtuse angle to the side wall so that the side wall and first end wall act as a barrier, wherein the safety barrier further comprises a piling gate for receiving sheet piling

2. The safety barrier of claim 1, wherein the piling gate comprises a first beam arranged 10 across a length of the side wall and spaced apart therefrom.

3. The safety barrier of claim 2, wherein the piling gate further comprises a second beam substantially the same as the first beam arranged parallel to and displaced in a height dimension of the side wall from the first beam.

4. The safety barrier of claim 3, wherein the first beam is arranged substantially halfway up 15 the height of the side wall and the second beam is arranged at a lower edge of the side wall.

5. The safety barrier of claim 3 or 4, wherein the piling gate further comprises a third beam substantially the same as the first beam arranged parallel to the first beam at an upper edge of the side wall.

6. The safety barrier of any preceding claim, wherein the first beam comprises a falsework 20 soldier.

7. The safety barrier of any preceding claim, wherein means for connection to a turnbuckle are provided on both the side wall and the first end wall, wherein the means for connection are arranged so that connection of a turnbuckle therebetween maintains the first end wall at the obtuse angle.

25

8. The safety barrier of any preceding claim, wherein a castor wheel is provided toward a distal end of the first end wall.

9. The safety barrier of any preceding claim, wherein an upper edge of the side wall is adapted to have fencing coplanar with the side wall attached thereto.

10. The safety barrier of claim 9, wherein an upper edge of the first end wall is adapted to have fencing coplanar with the first end wall attached thereto.

11. The safety barrier of any preceding claim, further comprising bracing to maintain the safety barrier in the first configuration.

5

12. The safety barrier of any preceding claim, further comprising a kentledge holder attached to the first end wall.

13. The safety barrier of any preceding claim, further comprising a second end wall connected by a second hinge to the side wall at a second end opposite the first end wherein:

in the first configuration, the second end wall is arranged at a right angle to the side wall 10 so that the safety barrier takes a form of three walls of an intermodal container;

in the second configuration, the second end walls are arranged at an obtuse angle to the side wall so that the side wall and end walls act as a barrier.

14. The safety barrier of claim 13, wherein means for connection to a tumbuckle are provided on both the side wall and the second end wall, wherein the means for connection are

15 arranged so that connection of a tumbuckle therebetween maintains the first end wall at the obtuse angle.

15. The safety barrier of claim 13 or 14, wherein a castor wheel is provided toward a distal end of the second end wall.

16. The safety barrier of claim 13, 14 or 15, wherein an upper edge of the second end wall is 20 adapted to have fencing coplanar with the second end wall attached thereto.

17. The safety barrier of any preceding claim, wherein:

when in the second configuration, the safety barrier is adapted to detachably connect to another safety barrier in accordance with any preceding claim.

18. A kit comprising first and second safety barriers in accordance with any of claims 1-12, 25 wherein:

when the first and second safety barriers are in their first configurations, the end wall of the first safety barrier is adapted to detachably connect with the side wall of the second safety barrier and the end wall of the second safety barrier is adapted to detachably connect with the side wall of the first safety barrier to take a form of four walls of an intermodal container;

when the first and second safety barriers are in their second configurations, the end of the side wall of the first safety barrier opposite its end wall is adapted to detachably connect with the end of the side wall of the second safety barrier opposite its end wall.

19. A kit comprising a safety barrier in accordance with any of claims 1-17, further 5 comprising a stabilisation member adapted to attach to the piling gate.

20. The kit of claim 19, wherein the stabilisation member comprises a falsework support frame and a kentledge holder.

21. The kit of claim 19 or 20, further comprising waling attachable to the piling gate and suitable for providing an additional piling gate for receiving additional sheet piling at right

10 angles to the first beam.

Intellectual

Property

Office

Application No: GB1619654.5 Examiner: Mr Sean O'Connor