Structure final settlement amount algorithm considering special process of immersed tube tunnel
A technology of immersed tube tunnel and settlement, which is applied in the field of final settlement calculation of structures considering the special process of immersed tube tunnels, and can solve problems such as deviation between calculated values and measured data, water leakage between pipe joints, and structural settlement
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Embodiment 1
[0032] An algorithm for the final settlement of structures considering the special process of immersed tube tunnels, including the following steps:
[0033] (1) Determine the basic form influence coefficient k 1 , generally 0.85 is desirable;
[0034] (2) Determining the influence coefficient k of structural stiffness and joints (including joints with buried sections) 2 , when calculating the pipe section connected to the buried structure and the pipe section at the slope peak of the longitudinal section of the tunnel, k 2 The value of is 0.8;
[0035] (3) Calculate the settlement S of the sand cushion considering the effects of over-excavation and back-silting, etc. 1 , S 1 Calculation method:
[0036]
[0037] P 0 is the additional stress on the top of the sand cushion, and is the sum of the self-weight of the tunnel structure and the pressure of the upper covering soil minus the buoyancy of the tunnel, in kN / m 2 ;
[0038] h 1 Design thickness for cushion, unit ...
Embodiment 2
[0055] An algorithm for the final settlement of structures considering the special process of immersed tube tunnels, including the following steps:
[0056] (1) Determine the basic form influence coefficient k 1 , generally 0.85 is desirable;
[0057] (2) Determining the influence coefficient k of structural stiffness and joints (including joints with buried sections) 2 , when calculating the middle section of the tunnel profile and the section at the valley, k 2 The value of is 1.2;
[0058] (3) Calculate the settlement S of the sand cushion considering the effects of over-excavation and back-silting, etc. 1 , S 1 Calculation method:
[0059]
[0060] P 0 is the additional stress on the top of the sand cushion, and is the sum of the self-weight of the tunnel structure and the pressure of the upper covering soil minus the buoyancy of the tunnel, in kN / m 2 ;
[0061] h 1 Design thickness for cushion, unit m;
[0062] a is the over-excavation thickness, according to...
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Abstract
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