Bridge Piers: Types and Requirements - Part 2
The other day, we have started discussing bridge piers, here. Today we will continue the discussion on that in this article. This is the second and final part of the article on bridge piers.
Cylindrical piers: The piers which are built with the gentle prepared or cast iron chamber in which the solid are filled are known as cylindrical piers. These are utilized for bridges having moderate tallness. Some of the time flat and inclining steel supports are likewise accommodated extra steadiness.
Column piers or Column Bent: These are commonly utilized for the bridges of enormous stature. These are commonly built over flatboat administrations.
Trestle piers or Trestle bent: It consists of columns with bent tops at the top. According to the most recent suggestion the pivots may likewise be given. It is commonly utilized for flyovers and raised streets. These are appropriate for bridges where water ebb and flow is moderate and the stream bed is adequately firm.
Pile piers or Pile bents: These are utilized where the ground is temperamental and the low piers are required. In these sort of piers a number of steel or RCC piles are crashed into the ground furnished with the top at their top to help the principal support.
It is the normal variety of multicolumn bent. It is commonly utilized for the sort of bent on low tallness and limited capacity to focus.
Regular Framed Piers: These are the most recent kind of piers utilized in the bridges. In these piers the compelling range length for braces gets diminished.
Subsequently the development will be prudent. The inconvenience of these kinds of piers is the gatherings of flotsam and jetsam e.g falling trees, enormous skimming materials, and so forth.
Characterization of Bridge Piers dependent on Force Transfer Mechanisms: In view of the kind of powers the pier is exposed to, bridge piers are named Fixed and Free piers.
In a most basic clarification, the piers supporting a fixed bearing are called fixed piers and those supporting free bearings are called free piers.
Fixed piers are dependent upon transverse and longitudinal powers though free piers move just hub powers from the bearing to the establishments. For multispan bridges, the quantity of fixed and free piers rely upon the length of bridge, size of pier and greatness of long and trans powers superstructure can be exposed to.
For customary multispan nonstop bridges under 200-300m one fixed pier is given.
Some different kinds of bridge piers:
Hammerhead Piers: It is likewise called solid shaft piers. It has a solitary solid cross area that helps the top. In this pier, it is seen that the significant hub of the pier and the course of the steam stream is roughly the same.
It is prescribed to utilize roundabout or little rectangular cross area when the stream isn't a similar way as the significant pivot. Spread balances are commonly utilized for this kind of piers.
Multicolumn or Pile Bent: It has at least two columns that help the top. There is an issue of garbage assortment when the water is permitted to stream between the columns. Joined balance might be utilized where the column separating is less and disconnected balance where the dividing is more prominent. It is otherwise called outline bent.