Simulation for the Spatial–Time Characteristics of High Arch Dam

As a kind of slim shell structure flexibly based on its deformable foundation, high concrete arch dam exhibits remarkable spatial–time characteristics. In this paper, the Xiaowan Hydropower Project accommodating 294.5 m high double curvature arch dam is taken as example, to which the factor of time is introduced in the whole numerical simulation procedure. The dynamic inputting of the parameters related to the structural geometry and material properties (e.g. thermal, permeability, deformation/stress) following the construction progress is realized in an intension to establish a four-dimensional (spatial–time) numerical simulation procedure. The Digitized System of Xiaowan Arch Dam (DSXAD) is further formulated by the combination of the instrumentation system, the spatial–time simulation procedure, and the engineering judgments. The DSXAD has been working well in tracing the real working status of the dam during its construction period as well as service period. A series of difficult technical issues in the construction of the Xiaowan Dam are successfully solved with the help of the DSXAD. Through this practices important theoretical insights are achieved, which founds a new landmark for the high arch dam construction in China.

[1]  Franklin W. Schwartz,et al.  A Stochastic Analysis of Macroscopic Dispersion in Fractured Media , 1983 .

[2]  Sheng-hong Chen,et al.  Numerical estimation of REV and permeability tensor for fractured rock masses by composite element method , 2008 .

[3]  LiChun Zou,et al.  Stability analysis of the temperature cracks in Xiaowan arch dam , 2011 .

[4]  G. N. Pande,et al.  Rheological model and finite element analysis of jointed rock masses reinforced by passive, fully-grouted bolts , 1994 .

[5]  Zhu Yue.  Study on application of water cooling pipe measures to RCCDs' thermal control during continuous construction in high-temperature seasons , 2002 .

[6]  Masami Ishikawa.  Thermal stress analysis of a concrete dam , 1991 .

[7]  P. Egger,et al.  Composite Element Model of the Fully Grouted Rock Bolt , 2004 .

[8]  Isam Shahrour,et al.  Composite element algorithm for the thermal analysis of mass concrete: Simulation of lift joint , 2011 .

[9]  CHENSheng-hong,et al.  COMPOSITE ELEMENT METHOD FOR SEEPAGE ANALYSIS OF GEOTECHNICAL STRUCTURES WITH DRAINAGE HOLE ARRAY , 2004 .

[10]  Sheng-hong Chen,et al.  Finite element analysis of jointed rock masses reinforced by fully-grouted bolts and shotcrete lining , 2009 .

[11]  Isam Shahrour,et al.  The Feedback Analysis of Excavated Rock Slope , 2001 .

[12]  Hong Zhou,et al.  Evaluation of excavation‐induced relaxation and its application to an arch dam foundation , 2012 .

[13]  F M Wegian,et al.  Investigation of the embedded cooling pipe system effects on thermal stresses of the mass concrete structures using two phase finite element modeling , 2008 .

[14]  Paul A. Witherspoon,et al.  A Model for Steady Fluid Flow in Random Three‐Dimensional Networks of Disc‐Shaped Fractures , 1985 .

[15]  Isam Shahrour,et al.  Composite Element Analysis of Gravity Dam on a Complicated Rock Foundation , 2008 .

[16]  Björn Dverstorp,et al.  Conditional simulations of fluid flow in three-dimensional networks of discrete fractures , 1987 .

[17]  Peter Egger,et al.  Three Dimensional Elasto-viscoplastic Finite Element Analysis of Reinforced Rock Masses and its Application , 1999 .

[18]  Isam Shahrour,et al.  Estimation of elastic compliance matrix for fractured rock masses by composite element method , 2012 .

[19]  Guido Dhondt,et al.  Cutting of a 3-D finite element mesh for automatic mode I crack propagation calculations , 1998 .

[20]  Sheng Qiang,et al.  Composite element model for discontinuous rock masses , 2004 .

[21]  Isam Shahrour,et al.  Hierarchical algorithm of composite element containing drainage holes , 2010 .

[22]  John L. Nieber,et al.  Drains as a Boundary Condition in Finite Elements , 1986 .

[23]  Isam Shahrour,et al.  Composite element model for the bonded anchorage head of stranded wire cable in tension , 2015 .

[24]  Ömer Aydan,et al.  The stabilisation of rock engineering structures by rockbolts , 1989 .

[25]  G. N. Pande,et al.  The Behaviour Of Reinforced Jointed Rock Masses Under Various Simple Loading States , 1983 .

[26]  M. Oda,et al.  Permeability tensor for discontinuous rock masses , 1985 .

[27]  T. D. Streltsova.  Hydrodynamics of groundwater flow in a fractured formation , 1976 .

[28]  Zhu Bofang,et al.  Finite Element Analysis of Effect of Pipe Cooling in Concrete Dams , 1989 .

[29]  S. P. Neuman,et al.  Field Determination of the Three‐Dimensional Hydraulic Conductivity Tensor of Anisotropic Media: 1. Theory , 1985 .

[30]  Ting He,et al.  Evaluation of cracking potential for concrete arch dam based on simulation feedback analysis , 2011 .

[31]  Jianxin Ding,et al.  Simulation and feedback analysis of the temperature field in massive concrete structures containing cooling pipes , 2013 .

[32]  Feng,et al.  COMPOSITE ELEMENT MODEL FOR ROCK MASS SEEPAGE FLOW , 2006 .

[33]  Chen Shenghong.  COMPOSITE ELEMENT METHOD FOR SEEPAGE ANALYSIS OF GEOTECHNICAL STRUCTURES WITH DRAINAGE HOLE ARRAY , 2004 .

[34]  James O. Duguid,et al.  Flow in fractured porous media , 1977 .

[35]  Isam Shahrour,et al.  Study on Rock Bolt Reinforcement for a Gravity Dam Foundation , 2011, Rock Mechanics and Rock Engineering.

[36]  G. Marsily,et al.  Modeling fracture flow with a stochastic discrete fracture network: calibration and validation: 1. The flow model , 1990 .

[37]  Masanobu Oda,et al.  An Equivalent Continuum Model for Coupled Stress and Fluid Flow Analysis in Jointed Rock Masses , 1986 .

[38]  Thomas Olofsson,et al.  Reinforcement of jointed rock mass : a non-linear continuum approach , 1985 .

[39]  Isam Shahrour,et al.  Composite element method for the bolted discontinuous rock masses and its application , 2008 .

[40]  Herbert H. Einstein,et al.  Three Dimensional Flow Modeling In Jointed Rock Masses , 1987 .

[41]  G. I. Barenblatt,et al.  Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks [strata] , 1960 .

[42]  Isam Shahrour,et al.  Composite element method for the seepage analysis of rock masses containing fractures and drainage holes , 2010 .

[43]  H. P. Rossmanith,et al.  SIMULATION OF CRACKING IN LARGE ARCH DAM: PART I , 1989 .

[44]  Chiu Liu,et al.  Temperature field of mass concrete in a pipe lattice , 2004 .

[45]  P. Witherspoon,et al.  Porous media equivalents for networks of discontinuous fractures , 1982 .