Title: Innovations and Value Engineering Contribute to Sustainable Structures

Author(s): Milan Kalny

Publication: Symposium Paper

Volume: 326

Issue:

Appears on pages(s): 68.1-68.12

Keywords: bridges, durability, efficiency, optimization, UHPC, value engineering

DOI: 10.14359/51711051

Date: 8/10/2018

Abstract:

The author has been involved in design of many bridges in the Czech Republic as well as in research and development of ultra-high performance fibre-reinforced concrete (UHPC) and its applications for precast members. His engineering practice confirmed that innovations and value engineering can significantly contribute to durable and sustainable structures. However, in rather traditional and conservative civil engineering profession it is not always easy to bring innovations to life. Many obstacles have to be surmounted including outdated design standards, rigid rules of clients and strict procedures for public procurement where any modifications are not welcomed. While the financial risk of innovative business is mainly on the designer and contractor, the clients have to approve technology which is not verified over a long period and which is connected with possible delays. The experience from innovative projects is shown on 3 implemented bridges as follows:

• Arch bridge over the Oparno valley
• Cable-stayed footbridge in Celakovice
• Lightweight pedestrian precast bridges

Main advantages of these applications are high durability, low maintenance and reasonable life cycle cost. All applications were successfully implemented as alternative proposals in tenders within given financial limits. Finally, the innovative implementations can contribute to sustainable structures and their acceptance by both authorities and public.