Construction Challenges for Bridges in Bangladesh
With the rapid development of Bangladesh’s transportation industry, the scale of bridge constructions is increasing, and the construction quality of bridge has become an important work content of the transportation industry. The quality of the bridge construction project is in addition to the material, the quality of construction personnel and construction management, but also by the construction technology interference. Due to different environment, there have multiple construction challenges for bridges in Bangladesh. Most of the bridge construction company in Bangladesh are not ready to take challenges for construction a bridge in different environment.
Various challenges that come across while constructing bridges are dealing with river erosion, water level of the river and other waterways, high winds, landslides etc. and these require special attention to complete the exercise of bridge planning and construction.
Bridge construction may face two types of challenges. One in design phase and one in construction phase. Let’s discuss about construction challenges for bridges –
During Design Phase
Determination of type of Bridge: The first challenge is to determine the type of bridge clients wants to construct. Determine what kind of bridge it is, Girder Bridge, truss bridge, arch bridge, cable stayed bridge, and suspension bridge. Bridge type determination is reliant upon the site attributes, owner preferences, and cost. Assuming the extension gets over water, the pressure driven requirements of the site and the profile grade will influence the scaffold type determination. A pressure driven investigation and hazard appraisal should be finished to estimate the extension. A survey of the bridge site will decide whether the profile grade can be raised to take into consideration an extension to clear traverse the stream and additionally decide the profundity of design.
Determine abutment spot as well the pier: A bridge abutment is a structure which connects the deck of a bridge to the ground, at the ends of a bridge span, helping support its weight both horizontally and vertically. Sometimes determination of abutment spot as well as the pier is too challenging for the construction of a building.
Plan the project schedule, cost, number of worker: Sometimes it is difficult to plan a perfect and proper project schedule. As is often the case, getting the contractor’s schedule is too tough. The project was not supposed to start and end due to bad weather.
Cost management is the most basic portion of dealing with any undertaking like bridge construction and any adjustment of cost assessment straightforwardly impacts the task timetable and extension. The precise act of venture cost control is vital in any task to effectively achieve the undertaking objective. Headway in innovation has made a mentality of partners to finish the whole undertaking inside close timetables and low venture cost. There are various difficulties that happen while rehearsing project cost control in any venture. So when design a bridge it must be keeps in mind that planning a budget friendly design.
It is must to have sufficient number of worker are available for working in construction site.
Prepare equipment and material of the bridge: Bridge construction can be impaired by the amount of expensive equipment sometimes required to perform them. While some bridges can be inspected on foot and with simple tools or equipment, others require more substantial aids. Dive teams are often necessary to thoroughly inspect a bridge with underwater supports. And in order to effectively gauge the condition of the underside of a large bridge. Watercraft can sometimes be necessary, as well as large lights, scaffolding, or electronic equipment. The ownership and maintenance of all these equipment types incur additional work and expense.
During Construction Phase
Dewatering: Dewatering removes surface water or groundwater from a site before construction commences. It’s one of the most vital steps in constructing structures with high water tables, inadequate slopes for water run-off, or excavations and trenches where water can accumulate. When we do the abutment we must dry the water of the river. Dewatering is crucial in construction as it offers stable and dry conditions for excavations by increasing soil stability and ensuring worker and equipment safety.
Lifting heavy material: Lifting heavy materials while loading, unloading and distributing construction materials can cause injury to muscles, nerves, discs and ligaments of the low back. Non-specific low back pain is not the result of a fall or some other acute traumatic injury, so it can be difficult to identify a specific event that led to the injury. Repetitive lifting can lead to low back muscle strain, ligament sprain, a bulging or herniated disc, nerve damage, or other back problems.