Soil-Structure Interaction Analysis of 300m Tall Reinforced Concrete Chimney with Piled Raft and Annular Raft under Along-Wind Load

Table 3

Absolute maximum tangential and radial moments and settlement of the raft.

Conventional method	Soil-structure interaction analysis
	Soil type	𝐷𝑜/𝑡 = 12.5		𝐷𝑜/𝑡 = 17.5		𝐷𝑜/𝑡 = 22.5
		R	PR	R	PR	R	PR
Tangential bending moment (kNm)
28361.6	S1	28607.0	19299.0	16821.0	10914.0	10474.0	8291.1
	S2	14554.0	10952.5	7476.7	7090.3	4917.3	5280.2
	S3	6079.8	7248.7	3204.8	4584.4	2103.6	3319.0
	S4	2625.3	4565.5	1400.7	2716.6	914.8	1812.0
Radial bending moment (kNm)
12572.1	S1	24740.0	19390.5	19510.5	14806.0	16038.5	12126.0
	S2	18315.5	14897.5	13135.0	10971.5	10379.7	9013.2
	S3	11714.3	11154.5	8120.8	8217.9	6300.8	6689.3
	S4	7286.7	8133.0	4801.8	5797.8	3515.1	4534.6
Settlement (mm)
As per IS:  1904–1986 [35], permissible settlement is 0.075 m	S1	72.52	40.52	78.15	42.58	82.60	44.29
	S2	26.18	16.67	27.48	17.34	28.40	17.87
	S3	8.08	6.46	8.36	6.66	8.64	6.84
	S4	2.26	2.15	2.35	2.22	2.42	2.30