Precast Bollard Wall Assembly Without On-Site Bracing
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Solution Overview
Problem
The current method of constructing border walls is time-consuming, labor-intensive, and costly due to the need for pouring concrete foundations, installing steel rebar, and bracing bollard fence sections during concrete solidification.
Innovation Solution
The use of precast concrete base members with aligned openings and bollard fence sections, where bollards are matched to corresponding openings, allowing for rapid assembly without bracing, and filled with grout for additional support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional concrete pouring method is used to construct border walls, then structural integrity is ensured, but construction time and labor costs increase significantly
Solution Approach 1:
The base members are precast with embedded steel reinforcement structures before being transported to the construction site. This preliminary preparation of the foundation elements eliminates the need for on-site concrete pouring and rebar installation, significantly accelerating construction while maintaining structural integrity through factory-controlled quality standards.
Solution Approach 2:
The border wall system is divided into modular components: precast base members with integrated reinforcement, bollard sections, and fence panels. These segmented modules can be independently manufactured and assembled, enabling rapid construction without the time-consuming process of pouring continuous concrete foundations.
2Strength
If steel rebar installation and concrete pouring are performed on-site, then foundation strength is achieved, but construction complexity and labor intensity increase
Solution Approach 1:
The steel reinforcement structures are merged into the base members during the precasting process. The reinforcement bars, stirrups, and connecting elements are integrated into the concrete matrix before curing, creating a single unified component that combines both structural strength and foundation functionality, eliminating separate rebar installation steps.
Solution Approach 2:
The precast base members are designed with self-contained reinforcement systems that require no additional on-site assembly. The embedded steel structures are pre-positioned and pre-secured within the base members, allowing the components to be installed as complete, self-sufficient units that automatically provide the required foundation strength upon installation.
3Stability of the object's composition
If bracing is used to hold bollard fence sections during concrete solidification, then structural stability is maintained, but construction time and material costs increase
Solution Approach 1:
The base members are precast and cured to full strength before installation, eliminating the need for bracing during the curing process. The bollard fence sections are designed with self-aligning features that ensure proper positioning upon installation, and the precast bases provide immediate structural support without requiring temporary stabilization measures.
Solution Approach 2:
The bracing function is extracted from the construction process by using precast base members that provide inherent structural stability. The reinforcement structures are removed from the on-site construction sequence and incorporated into the factory-precast components, eliminating the need for temporary bracing systems and associated materials.
Data Source
AI summary
Border walls and related systems and methods are disclosed. A border wall may include a plurality of bollard fence sections adapted for engagement with corresponding base members. Each fence section may include a plurality of bollards. Each base member may include a plurality of openings extending downwardly from a top surface of the base member partially into the base member. The openings in the top of a base member are adapted for engagement with individual corresponding bollards on a bollard fence section. At least one of the bollards is “matched” to a corresponding opening in the base member so that the “matched” bollard, when inserted into and engaged with its corresponding “matched” opening, may function to support and/or align the bollard fence section. The base members may also include connectors, and/or mating alignment notches and protrusions, to facilitate joining and/or leveling of the base members to form a stable wall.