As an important part of engineering safety protection, the anti-explosion performance of the anti-explosion wall is directly related to the life safety and property safety of personnel. Therefore, in the process of engineering design and construction, great attention must be paid to the anti-explosion performance of the blast-resistant wall. This paper will elaborate on the blast resistance performance requirements, design points, construction points and acceptance criteria of explosion-resistant walls, in order to provide reference and reference for related projects.
1. Anti-explosion performance requirements.
The anti-explosion performance of the blast-resistant wall refers to its resistance under the first impact, mainly including load-bearing capacity, fire resistance and explosion-proof ability. Among them, load-bearing capacity and explosion-proof capacity are the most critical performance indicators. In the process of engineering design and construction, the anti-explosion performance of the blast wall must be fully considered and optimized according to the explosion resistance level and protection requirements.
Second, the main points of design.
1.Structural form selection.
The structural form of the blast-resistant wall should be selected according to the specific situation and protection requirements of the project. Common blast-resistant wall structure forms include reinforced concrete structure, steel plate concrete structure and steel plate structure. Among them, the reinforced concrete structure has good durability and stability, and is suitable for places with long-term protection requirements; The steel plate concrete structure has good explosion resistance and load-bearing capacity, and is suitable for places with greater risk; The steel plate structure has good processing performance and installation performance, and is suitable for places with high protection requirements.
2.Material selection.
The material selection of blast resistant walls should be selected according to their structural form and protection requirements. For reinforced concrete structures, high-strength concrete and high-strength steel bars should be selected; For steel plate concrete structures, high-quality steel plates and concrete should be selected; For steel plate structures, high-quality steel plates and high-strength connectors should be selected. At the same time, the choice of materials should also consider factors such as its durability, stability and fire performance.
3.Explosion-proof design.
The explosion-proof design of explosion-proof wall mainly includes the design of wave dissipation system and pressure relief system. The wave elimination system refers to the setting of a wave elimination device on the explosion surface of the explosion-proof wall to reduce the force of the shock wave on the wall; The pressure relief system refers to the setting of pressure relief ports or pressure relief plates on the explosion-proof wall to reduce the effect of pressure on the wall. The explosion-proof design should be calculated and optimized according to the hazard level and protection requirements.
Third, the main points of construction.
1.Pre-construction preparation.
Before construction, an on-site investigation should be carried out to understand the site conditions and construction environment, and a detailed construction plan and safety measures should be formulated. At the same time, the materials should be inspected and accepted to ensure that their quality meets the requirements.
2.Basic processing.
Foundation treatment is one of the key links in the construction of blast-resistant walls. The foundation should be treated according to the design requirements to ensure its flatness and stability. Different treatment methods and technical measures should be adopted for different basic types.
3.Installation and connection.
When installing and connecting explosion-resistant walls, construction should be carried out in accordance with the design drawings and technical requirements to ensure that their location, size and angle meet the requirements. At the same time, reliable connection methods and high-quality connectors should be used to ensure the overall stability and load-bearing capacity of the blast-resistant wall. In the welding process, suitable welding processes and materials should be used to ensure the welding quality and explosion-proof performance.
4.Inspection & Acceptance.
After the construction is completed, the performance of the blast wall should be tested and accepted. The test content includes load-bearing capacity, fire resistance, explosion-proof ability, etc. During acceptance, it should be evaluated in strict accordance with the design requirements and technical specifications to ensure that the performance of the blast-resistant wall meets the requirements. The unqualified parts should be rectified and dealt with in a timely manner.
Fourth, the acceptance criteria.
The acceptance criteria for the blast-resistant wall should be formulated according to the requirements of its explosion-resistant performance. Specific standards should be formulated according to the specific conditions and protection requirements of the project, and should meet the requirements of relevant national standards and specifications. The acceptance should be based on the measured data to evaluate and accept the performance indicators. At the same time, a complete acceptance file and record should also be established to facilitate later maintenance and management.
In short, the anti-explosion performance of the blast-resistant wall is one of the important guarantees for engineering safety. In the process of engineering design and construction, the anti-blast performance of the blast-resistant wall must be fully considered and optimized according to the specific situation. At the same time, the requirements of relevant standards and specifications should be strictly adhered to ensure the construction quality and use effect of explosion-resistant walls.