The proportion of high-rise buildings and super-high-rise buildings in urban construction is increasing year by year, and how to solve the safety problems in deep foundation construction of high-rise buildings is becoming more and more prominent.
Collapse accident has become the fifth major injury after the "four major injuries" (falling from a height, electric shock, object strike and mechanical injury). In the collapse accidents, the collapse caused by foundation pit excavation and artificial pile construction accounts for 65% of the total collapse accidents, so the collapse accidents have also been included in the special treatment content of the Ministry of Construction.
Extended data:
When pouring ready-mixed concrete, a supply contract should be signed with the ready-mixed concrete supplier in advance, and the concrete quality must meet the requirements of the current national specifications and design documents, and the concrete quality should be strictly checked and accepted when entering the site. Prepare sacks, curing felt or curing liquid for concrete curing.
Preparation of construction tools. Machine preparation and inspection: tower crane, gantry, hopper, tandem drum, concrete pumping equipment, cloth machine and other shed equipment, especially when pumping concrete, there must be a standby pump. Before pouring, all machines and tools used should be inspected and stopped, and full-time technicians should be equipped for maintenance at any time. Before pouring, it is necessary to verify the engineering materials that have been poured at one time or before pouring to a construction joint to avoid shutdown.
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