Field demonstration of new bridge approach slab designs and performance : [tech summary].

Abu-Farsakh, Murad

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Field demonstration of new bridge approach slab designs and performance : [tech summary].

2014-06-01
By Abu-Farsakh, Murad

File Language:

English

Details

Creators:

Abu-Farsakh, Murad
Corporate Creators:

Louisiana Transportation Research Center
Subject/TRT Terms:
Publication/ Report Number:

State Project No. 30000116 ; LTRC Project No. 05-1GT
Resource Type:

Brief
Geographical Coverage:

Louisiana
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

The Louisiana Department of Transportation and Development (DOTD) has launched a major eﬀ ort to solve ; the bridge bump problem by changing the design of approach slabs where diﬀ erential settlement is expected. ; The objective is to ﬁ nd a feasible solution that makes the approach slabs strong enough to allow them to lose a ; portion or all of their contact supports without detrimental deﬂ ection. In this solution, the ﬂ exural rigidity (EI) ; of the approach slabs will be increased by increasing the slab thickness and reinforcement, and therefore some ; embankment settlement will be allowed without a decrease in ride quality. As a result, the slab and traﬃ c loads ; will be carried by the two ends of the slab (simply supported) rather than being distributed over the length of ; the slab. Accordingly, a footing will be needed to support the concentrated load at the R/S joint. To increase the ; bearing capacity of embankment soil and to reduce the footing settlement due to concentration load, the soil ; underneath the footing needs to be reinforced with geosynthetic reinforcement, ; such as geogrids.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/27329/dot_27329_DS1.pdf
File Type:

[PDF - 114.75 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:e7ecbb330b49013ed30c0ef79b177eaa7b592354e0a881aa5fd3f81d97a2e9dd

File Language:

English

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