Deflection in concrete structures, Civil Engineering

Assignment Help:

Tension reinforcement leads to increasing deflection in concrete structures?

In BS8110 a modification factor is applied to span/depth ratio to take into account effect of tension reinforcement. Actually deflection of concrete structure is affected by stress and amount of tension reinforcement. To understand their relationship let us consider the subsequent equation relating to beam curvature:

Curvature = 1/r = e/ (d-x)

Where r = radius of curvature

  e = tensile strain in tension reinforcement

  d = effective depth

  x = depth of neutral axis

Provided that tensile strain in tension reinforcement remains constant, curvature of concrete structure increases with depth of neutral axis. It is perceived that depth of neutral axis rises with tension steel ratio. Consequently curvature of concrete section is directly proportional to the tension steel ratio. Additionally, largervalue of the depth of neutral axis enhances increased area of concrete compression so that effect of creep on deflection appears to become significant.


Related Discussions:- Deflection in concrete structures

Continuous flow systems, Continuous Flow Systems: Transport by road, r...

Continuous Flow Systems: Transport by road, rail, air or ships takes place in vehicles which move along a path at intervals. As against this, continuous flow systems are those

Seismic loading principles, Seismic loading principles Ground motion ...

Seismic loading principles Ground motion Effects of ground motion are specified as one of the acceleration delineation spectrum or time history of acceleration variation m

Define the transmissivity and reynold number, Define the Transmissivity and...

Define the Transmissivity and Reynold Number TRANSMISSIVITY: (T) A measurement of the rate of groundwater movement through different soil and rock materials. For both confined

Major drawbacks of using inverted siphons, Question What is key application...

Question What is key application of inverted siphons? What are major drawbacks of using inverted siphons ? Answer Inverted siphons are planned at locations in which sewer s

Mechanism of taking up loads for concrete paving blocks, Mechanism of takin...

Mechanism of taking up loads for concrete paving blocks  Paving for concrete blocks comprises closely packed paving blocks in pre-determined patterns and tiny joint spaces bet

Surveying, what are obstacles in chaining

what are obstacles in chaining

door shutters, what is the difference between paneled and glazed shutte

what is the difference between paneled and glazed shutter

Show the functions of diaphragm walls, Q. Show the Functions of diaphragm w...

Q. Show the Functions of diaphragm walls? The functions of diaphragm walls are as follows: (i)  It is designed to maintain soils during the construction of underground

Hydaurlics : pelton and francis turbine, what are the factors which influen...

what are the factors which influence the efficiency of the turbine?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd