Bridge Aesthetics for Broadway Bridge Replacement: Daytona Beach, Florida

Author(s):  
Brett H. Pielstick

As the gateway to the beaches of Daytona Beach, Florida, the new Broadway Bridge will be a signature bridge for the community. Mosaic tile murals up to 3 m in height will be incorporated around the columns of the new bridge, as will mosaic panels along the sidewalk handrail. The bridge will also feature ornamental handrail and light fixtures with aesthetic lighting that will display this high-profile structure to the surrounding skyline of Daytona Beach. Additional plantings and fountains will be provided with a grand architectural entrance welcoming visitors to Daytona Beach and onto this signature bridge. The glass tile mosaic art will feature manatees, dolphins, and other nature scenes with species endemic to Florida. Special reviews and approval of the art scenes will be done by the architect of record before fabrication of the large pieces. The Broadway Bridge replacement is being constructed with twin, precast, segmental concrete bridges erected by balanced cantilever construction with an overhead gantry system. The construction includes a cast-in-place, posttensioned flat-slab section on the west end. Each bridge will have a 20-m vertical clearance over the 38-m-wide navigational channel. The bridges will be approximately 918 m in length, with spans varying from 30 to 80 m. The span length variation with structure height will add to the overall aesthetic features of this signature bridge. Graceful lines developed by the segmental design and the additional architectural features provided by the mosaic inlays, lighting, plantings, and fountain make the Broadway Bridge unique and a beautiful addition to the Daytona Beach area.

2015 ◽  
Vol 744-746 ◽  
pp. 799-802
Author(s):  
Feng Kun Cui ◽  
Xu Chang Luo ◽  
Feng Hui Dong

The object of this paper analyzes the reliability level of pre-stressed concrete continuous girder bridges designed with the Chinese codes including the code for design of highway reinforced concrete and pre-stressed concrete bridges and culverts of JTG D62-2004 and JTJ 023-85 using cantilever construction method. Typical cross-sections used in the example bridge are considered at service stage. Load and resistance parameters are treated as random variables. The statistical parameters are based on the available literature, test data and survey results. Reliability indices are calculated by iterations using the first-order second-moment method. The calculated results indicate that the reliability indices on the code of D62-2004 vary considerably to the code of JTJ 023-85. And it could provide the references for the reinforcement of old bridges and the design of new bridges using the cantilever construction.


2014 ◽  
Vol 102 (20) ◽  
pp. 1536-1543
Author(s):  
Santiago Hernandez ◽  
Pablo Ouro ◽  
Luis E. Romera

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Shiwei Li ◽  
Yongqing Yang ◽  
Qianhui Pu ◽  
Wangqing Wen ◽  
Aiguo Yan

The early cracking of concrete beam bridges remains a concern in civil engineering. An analytical model considering the combined effect of thermo-hydro-mechanical processes forms the basis for assessing the cracking risk of girders during construction. Based on the equivalent hydration theory, the temperature and moisture conduction processes and the evolution of the mechanical properties of concrete were modeled as a function of the equivalent age. A coupling model for the temperature and moisture fields was established, and a theoretical framework for analyzing the thermo-hydro-mechanical combined effect was presented. Based on this, a numerical analysis method was proposed and implemented into ABAQUS; the results were validated with some typical tests. Finally, a long-span prestressed concrete (PC) box girder bridge with balanced cantilever construction was taken as an example, and the causes of web cracking and its impact degree were analyzed. The results show that the rate of moisture conduction is significantly lower than the rate of temperature conduction; even for thin-walled components, there exists a significant humidity gradient on the surface layer. The humidity-induced shrinkage and restraint of the precast members are the main causes of web cracking.


2013 ◽  
Vol 18 (10) ◽  
pp. 946-956 ◽  
Author(s):  
William G. Davids ◽  
Timothy J. Poulin ◽  
Keenan Goslin

Author(s):  
J. A. Eades

For well over two decades computers have played an important role in electron microscopy; they now pervade the whole field - as indeed they do in so many other aspects of our lives. The initial use of computers was mainly for large (as it seemed then) off-line calculations for image simulations; for example, of dislocation images.Image simulation has continued to be one of the most notable uses of computers particularly since it is essential to the correct interpretation of high resolution images. In microanalysis, too, the computer has had a rather high profile. In this case because it has been a necessary part of the equipment delivered by manufacturers. By contrast the use of computers for electron diffraction analysis has been slow to prominence. This is not to say that there has been no activity, quite the contrary; however it has not had such a great impact on the field.


Sign in / Sign up

Export Citation Format

Share Document