Tyvand, J and Blachly, A T (1986) Foamed plastic absorbs staged post-tensioning deflections. Journal of Construction Engineering and Management, 112(4), pp. 582-587. ISSN 0733-9364
Abstract
Staged construction of a long, post-tensioned, concrete highway bridge faces a falsework designer with the alternatives of a costly overdesign of falsework bents for all but a one-time, short-term load or the provision for expensive lowering devices. The problem is solved by using crushable foamed plastic support blocks. The support blocks can be designed to safely support the dead load of the superstructure and to crush when post-tensioning increases the reaction, thus limiting the reaction. While crushing, the blocks continue to provide the necessary support for the superstructure. Stress and strain graphs for foamed isocyanurate are provided, which demonstrate its suitability for this application and provide the basis for design.
| Item Type: | Article |
|---|---|
| Index terms: | concrete highway, suitability, face, designer, falsework, plastic, staged construction |
| Subjects: | construction methods, profession, design criteria, psychology, strategic site management, infrastructure and transport systems, materials science |
| Topics: | Roles and Professions, Design Practice, Engineering Principles, Site Management, Organizational Design |
| Descriptive scope: | 2 PC |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here