Top Applications & benefits of Pre-stressed Rock Anchors
A pre-stressed rock anchor is a high strength steel tendon, fitted with a stressing anchorage at one end and permitting force transfer to the grout and rock on the other end. The rock anchor tendon is inserted into a prepared hole of suitable length and diameter,fixed to the rock and pre-stressed to a specified force. This article discusses the applications & benefits of using pre-stressed rock anchors.
Applications of Prestressed Rock Anchors in Mumbai:
Retaining walls:
Retaining walls are structure used to retain soil, rock or other materials in a vertical condition. Hence they provide a lateral support to vertical slopes of soil. It helps keeping them in natural shape & prevents the fall.
Tower bases:
Tower bases, as the name suggests are the foundation structure of any high rising construction. Rock anchors play a very crucial role in rooting in the stanchions of sky-scrappers by holding the tower bases in check. Tower bases are integral part of bridges, tunnels, multi-storey buildings, etc. In a city like Mumbai, where there is not much space for the infrastructure to grow horizontally, vertical structures are very potent. Considering that, prestressed rock anchors must be installed with a technical precision.
Concrete structures:
No concrete structure can withstand heavy loads without a secure framework of rock anchors. Not using them not only compromises the integrity of the construction, but it also endangers the structures around it. Hence, all the constructional contractors make sure that the concrete structures they are building, can stand tall despite a heavy weight.
Advantages of Pre-stressed rock anchors:
After considering some of the many, many applications of pre-stressed rock anchors, it is important that you understand the benefits of installing them. Following are a few listed ones.
They are Pre-Tested - In pre-stressed rock anchors, each bolt is essentially "pre-tested" to ensure that the bolt will hold its design load prior to final construction.
They Eliminate Fatigue Stress- During its time as a part of a structure, the steel goes through some wear-and-tear. It is called as ‘Fatigue failure’ which can be minimized with prestressed rock anchors.
Eliminate Uplift- Pre-stressing can eliminate a "floating" condition of a foundation due to the natural hydraulic pressures or uplift loads caused by wind or other overturning moments.
Corrosion Protection - Pre-stressed Rock anchors prevent the elongation through the grout column in the free-stressing length. Due to elongation, the steel breaks down and cracks the grout causing corrosion and eventual failure. This is a common problem with passive or "non-tensioned" rock dowels. Pre-stressed rock anchors eliminate that issue, thus protecting the structure from succumbing to corrosion.
There are several Construction Equipment Rental Companies in Mumbai which deal with the pre-stressed rock anchors provision services. One of those names in ManavInfra Projects, which has been offering their incredible renting services to Mumbai constructors.