Construction Method and Process Optimization of Prestress Reverse Tensioning for Large-Span Bidirectional Suspension Steel Roof Structures

Table 7

Measured deformation values of monitoring points.

Construction phase		Monitoring values/vertical displacement (mm) (negative values indicate downward movement)
		1	2	3	4	5	6	7	8
Lowering stages	First stage	−33	−31	−52	−50	−30	−27	8	12
	Second stage	−41	−43	−60	−75	−48	−65	12	15
	Third stage	−55	−57	−76	−103	−68	−75	19	20
Rebound stage		−31	−35	−46	−53	−45	−40	12	11
Rebound value (maximum downward value − maximum rebound value)		24	22	30	50	23	35	7	9