论文部分内容阅读
成都化工碳素总厂焙烧车间为单层排架结构,有24榀27m跨YWJA-273型预应力混凝土折线形屋架。根据现场条件,采取地胎模(铺砖)榀叠浇。其中一叠屋架浇完混凝土后,由于连降十几天大暴雨,部分节点处的地胎模下沉,与底层屋架的上、下弦杆多处脱开,最大处3.8cm。地胎模下沉最大处9.6cm(下弦),造成屋架的最大旁弯(下弯)值为3.6cm(上弦)和5.8cm(下弦)。为避免屋架继续下沉开裂,我们立即采
The Chengdu Chemicals Carbon Plant roasting workshop is a single-row truss structure with 24榀27m span YWJA-273 prestressed concrete trussed truss. According to the site conditions, take the tire mold (paving) stacking. After a stack of trusses had been poured over concrete, due to heavy rainfall for more than a dozen days, the ground tires at some of the joints subsided, and the upper and lower chords of the underlying truss were separated from each other, with a maximum of 3.8 cm. The maximum height at which the tire mold sinks is 9.6cm (lower chord), causing the maximal side bend (down bend) of the truss to be 3.6cm (upper chord) and 5.8cm (lower chord). In order to prevent the roof from sinking and cracking, we immediately