Vertical Counterforce Loading Device for Soil Tests
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Solution Overview
Problem
Existing vertical counterforce loading mechanisms for large-tonnage soil material load tests, such as pile-loading and counterforce anchor piling, are inefficient, costly, and pose safety hazards due to the need for extensive preparation and large-scale ballast, which increases labor and economic costs and risks.
Innovation Solution
A vertical counterforce loading device that utilizes the own weight of the load test soil layer by forming a concrete support member and anchoring transfer components, connected through a vertical force transmission component with a jack, primary, and secondary beams to apply a large-tonnage vertical load, simplifying construction and reducing costs and safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If pile-loading method is used to provide large-tonnage vertical counterforce, then the loading capacity can be achieved, but the work efficiency is low and safety hazards increase due to large-scale ballast accumulation
Solution Approach 1:
The invention uses the self-weight of the tested soil layer to provide the counterforce for loading, eliminating the need for external ballast or pile-loading systems. The soil layer itself serves the dual purpose of being tested and providing the reaction force, achieving self-service and dramatically improving work efficiency
Solution Approach 2:
The invention extracts and eliminates the complex ballast accumulation system and pile-loading mechanism from the traditional loading setup. By using the soil layer's own weight, it removes the harmful elements of large-scale ballast while retaining the necessary counterforce function
2Force
If pile-loading method is used to provide large-tonnage vertical counterforce, then the loading capacity can be achieved, but safety hazards increase due to potential overturning of ballast accumulation
Solution Approach 1:
The soil layer serves itself by providing both the test subject and the reaction force source. This eliminates the need for external ballast that could overturn, completely removing the safety hazard while maintaining the required counterforce capability
Solution Approach 2:
The invention converts what would normally be a waste resource (the weight of the soil layer that needs to be tested) into a beneficial resource (the counterforce source). The soil's weight, which must be supported during testing, is simultaneously used to provide the reaction force for loading
3Force
If counterforce anchor piling method is used to provide large-tonnage vertical counterforce, then the loading capacity can be achieved, but the test preparation time is greatly increased
Solution Approach 1:
The soil layer provides its own counterforce without requiring any additional preparation time for installing anchor piles or drilling holes. The counterforce is inherently available from the start of the test, eliminating time-consuming preparation activities
4Force
If pile-loading method is used to provide large-tonnage vertical counterforce, then the loading capacity can be achieved, but the costs of manpower and safeguard measures significantly increase
Solution Approach 1:
The system uses the soil layer's own weight to provide counterforce, eliminating the need for extensive manpower to pile and manage ballast. No additional materials or safeguard measures are required beyond the test setup itself, dramatically reducing resource consumption
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces construction time and costs, enhances safety by eliminating the need for extensive ballast, and allows for flexible test procedures, improving overall efficiency and safety in large-tonnage soil material load tests.
Implementation Method 1
the jack, the primary beam and the secondary beam are lifted up. The secondary beam transmits a force to the connection component
Implementation Method 2
The weight of the load test soil layer is used to provide a pulling resistance to prevent the concrete support member from moving upwards. When the jack is limited in the lifting process, a vertical pressure is generated on the load plate
Data Source
AI summary
The vertical counterforce loading device includes a concrete support member, four transfer components, four connection components, a vertical force transmission component and a load test soil layer. The concrete support member is formed by pouring and concreting below the load test soil layer. The four transfer components are divided into two groups to be symmetrically and parallelly anchored in the concrete support member. The vertical force transmission component includes a load plate, a jack, a primary beam and a secondary beam arranged in sequence from bottom to top. The load plate is installed on the load test soil layer. Two secondary beams are connected crosswise to both ends of the primary beam, where end portions of the secondary beams are respectively connected to second ends of the connection components through reinforcement components. The device can improve work efficiency, reduce construction costs and improve safety.