Bridge Demolition Practices (2019) / Chapter Skim
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Pages 6-16
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From page 6... ...
6 The literature review process began with a bibliographic search of the Transportation Research Information Database for documents related to bridge demolition practices. Keywords and phrases in the search included "bridge demolition practices," "bridge demolition specifications," and "bridge demolition engineering." There was also a search of the OSHA website for engineering investigative reports of bridge demolition incidents.
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Literature Review 7 notes that demolition submittals should be similar to bridge erection submittals, "in reverse," and includes a demolition checklist to augment the erection checklist provided in Section 7. The manual provides information on verifying crane stability, lifting capacity determination, and rigging design.
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8 Bridge Demolition Practices during bridge rehabilitation and four methods for partial removal. The equipment and construction procedures for each method are presented, along with advantages and limitations on their use.
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Literature Review 9 Source: Courtesy of the Walsh Group. Figure 1.
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10 Bridge Demolition Practices details may not be known without field investigation. Some of the items they identified as requiring consideration include • The prestressing system, tendon locations at critical sections, points of cutting tendons during demolition.
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Literature Review 11 Failure to account properly for demolition equipment loads on the deck and load changes during deck removal has resulted in failures, according to Ayub (2006) , Jauregui (2014)
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12 Bridge Demolition Practices manual (Garlich et al.
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Literature Review 13 primarily address construction methods and operations for concrete removal and contractor measures to prevent damage to the structure to remain. It does include a requirement for the contractor to submit written procedures and drawings for removal operations but does not provide requirements for their contents.
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14 Bridge Demolition Practices demolition. The manual also includes provisions for the demolition plan, noting its complexity will vary with the complexity at the structure being demolished.
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Literature Review 15 be based on the existing structure condition. The evaluation is conducted in accordance with the AASHTO Manual for Bridge Evaluation (AASHTO 2018)
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16 Bridge Demolition Practices • When removal is adjacent to public traffic or railroad property, review contractor's traffic handling around or through the area. • Review protective shielding plans to ensure contractor meets the specified requirements.
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