CN102967481A - Method for determining function relation between ground building and underground structure - Google Patents

Abstract

The invention belongs to the field of building safety state detection technologies, and relates to a method for determining a function relation between a ground building and an underground structure. The method comprises the steps of determining the graph amplification, contraction and translation on the basis of an ArcGIS software platform, mutually inquiring a graph and attribute data and together displaying on a same interface, displaying the analysis and evaluation result in forms of graph, table, document and the like, evaluating the blast vibration safety, statically and dynamically computing the surface deformation, computing the dead load pressure ring of the ground building, evaluating the damage of the ground building, evaluating the damage of the underground structure, rasterizing the vector data and vectoring the raster data, and expanding a common numerical simulation software interface. The method is reliable in determination principle, simple in determination step, high in determination precision, advanced in determination technological equipment and good in stability, and can be widely used for determining and prewarning the safety function relations of various ground buildings and underground structures.

Description

A kind of surface structures and underground structure interactively assay method

Technical field:

The invention belongs to building safety state inspection field, relate to the interactively of a kind of above ground structure and subsurface geologic structures and the test and evaluation system of safe condition, particularly a kind of surface structures and underground structure interactively assay method, with realize measuring the infrastructure engineering on the impact of the contiguous existing building safety in ground and ground engineering construction on closely connecing the impact of existing underground structure safety.

Background technology:

During fast economic growth, owing to be subjected to resource restriction, effectively utilize on a large scale the underground space to become the task of top priority.According to statistics, cut-off was to 10 the end of month in 2012, and China has built up railway tunnel and surpassed 7000 kilometers, is building about 4600 kilometers; Built vcehicular tunnel surpasses 2900 kilometers, and is increasing with annual more than 150 kilometer speed; China's subway total kilometrage has reached more than 1600 kilometer, and the operation mileage will be above 3000 kilometers in 2015, and the year two thousand twenty planning total kilometrage will be above 6000 kilometers.Simultaneously, underground civil air defense constructions and installations, underpass, parking lot, market and bunker also increase gradually.Vibration and surge pressure that explosion in these infrastructure engineerings produces, neighboring buildings is exerted an influence safely, the excavation of underground works can cause the environmental effects such as displacement, distortion even inbreak of upper overlying strata soil layer inevitably, these effects feed through to ground can be made ground that sedimentation, side slope occur to produce slippage or the ground burst geology harm such as subside, and the ground buildings or structures are consisted of in various degree infringement; Along with constantly building up of underground works, can under nearly ground connection, build skyscraper or structures by the ground region of structure, explosion in the process of construction of these buildings or structures, the buildings gravity load after excavating and building up, can making on every side, Rock And Soil stress changes, thereby built underground structure ambient stress is changed, bring safely negative effect for underground structure; So the respective action relation of research surface structures and subsurface geologic structures is very with practical value.

At present, there is not yet report both at home and abroad for superstructure and underground structure two-way interaction's safety estimation system, usual way is superstructure and underground structure to be influenced each other separated, and research more is that the underground structure construction is to the security implication assessment of surface structures, behind different Software Numerical Simulations, the result is artificially analyzed, the complex process of this analytical approach, computational science is poor, and accuracy is low, take time and effort, practical result is undesirable.Therefore, being necessary to set up a cover can be fast, science, estimate mensuration and the evaluation system method of superstructure and underground structure interaction relationship exactly, for builder and supvr provide decision-making foundation.

Summary of the invention:

The object of the invention is to overcome the shortcoming that prior art exists, seek to design the assay method of a kind of surface structures and underground structure interaction relationship, to realize that the infrastructure engineering is on the impact of the contiguous existing building safety in ground and ground engineering construction mensuration and the scientific evaluation on the impact that closely connects existing underground structure safety, adopting related specifications to require to carry out on the basis of safety evaluation, binding isotherm research, on-the-spot test, laboratory examination and numerical simulation, test and appraisal content and appraisement system are programmed, utilize fractal theory, synergetics is theoretical and intelligent search algorithm is theoretical measures and estimates with algorithm, realization evaluation of measuring result's science and comprehensive.

To achieve these goals, the present invention is based on the ArcGIS software platform and measure, comprise that figure amplifies, dwindles, translation; Figure and attribute data are mutually inquired about and are jointly shown at same interface; The assay result with scheme, the forms such as table and document show; The blasting vibration safety evaluation; Earth's surface distortion static (final form) and dynamically (deformation process) calculating; Surface structures gravity pressure circle calculates; The above ground structure Damage Evaluation; The underground structure Damage Evaluation; Grid of vector data and raster data vector quantization, numerical simulation software Interface Expanding commonly used; It is measured technique and comprises that database makes up, the underground structure construction is estimated three steps to surface structures evaluation of effect and surface structures construction to underground structure function:

(1) database makes up: the database of structure comprises basic database and assay database two parts, basic database comprises graphic data base and attribute database, wherein, graphic data base is used for storage topomap, planning chart, geologic map, drill drawing, surface structures distribution plan, underground structure distribution plan; Attribute database comprises ground buildings or structures information (such as civilian, industrial, dyke etc.), underground structure information (such as subterranean railway, underground storage, underground commerce etc.) and geological information (such as stratum, landforms, tectonic structure, hydrogeology, environmental geology and seismogeology etc.); The assay database comprises evaluation criterion database and evaluation result database, wherein, the evaluation criterion database comprises blasting vibration relevant criterion and evaluation index, earth's surface distortion relevant criterion and evaluation index, ground buildings or structures Damage Evaluation standard and evaluation index, underground structure safety assessment evaluation criterion and evaluation index; The evaluation result database is used for the inventory analysis evaluation result, through expanding the spatial database that forms figure and the seamless fusion of attribute database, being convenient to provides the pilot process result for next step evaluation, perhaps provide foundation for consulting from now on, according to storing in the database after the corresponding national regulation arrangement, simultaneously the means according to engineering site experience, theoretical research, numerical experimentation and analog material test obtain the correlative study achievement, and evaluation criterion in the database and evaluation index are enriched and perfect;

(2) the underground structure construction comprises that to the surface structures evaluation of effect blasting vibration safety evaluation, earth's surface distortion are estimated, surface structures gravity pressure circle calculates and the above ground structure Damage Evaluation; The blasting vibration safety evaluation on the known quick-fried heart to measuring point distance carry out the safe distance that maximum dose calculates, known maximum dose calculates blasting vibration, internal force, displacement response and the above ground structure of blasting vibration intensity, the earth construction comprehensive evaluation that affected by blasting vibration, and by setting up computation model, result of calculation is stored in the rating database; Earth's surface distortion static (final form) and dynamically (deformation process) expectation are carried out in earth's surface distortion expectation, adopt improved PECK formula and stochastic medium theory formula to carry out earth's surface distortion static (final form) prediction; The fractal interpolation computing method of employing independent research are calculated the deformation values in the deformation dynamics process of earth's surface, and corresponding figure and result of calculation are stored into the evaluation result database; The above ground structure Damage Evaluation carries out Damage Evaluation to the buildings site inspection result of the version of xoncrete structure and masonry structure respectively, by setting up numerical model, utilize the buildings damage forecast computation model of independent research, comprehensive evaluation is carried out in the damage to above ground structure that underground structure construction causes, and evaluation result is stored into evaluation according in the storehouse;

(3) the surface structures construction is to underground structure function evaluation, comprises that measure and calculation surface structures excavation of foundation pit causes the distortion of the Rock And Soil after the stress relief and underground structure stress, change in displacement situation, underground structure lining cutting stressing conditions and crack; Measure and calculation surface structures foundation ditch blasting vibration is on the impact of underground structure; The pressure coil that measure and calculation buildings gravity load causes by setting up analytical model, in rating database, is finished the mensuration of surface structures and underground structure interactively to the measure and calculation result store to the impact of underground structure.

The present invention compared with prior art, its measuring principle is reliable, it is simple to measure processing step, it is high to measure degree of accuracy, determination techniques equipment is advanced, good stability can be widely used in safety effect relation mensuration and the early warning of various surface structureses and underground structure.

Description of drawings:

Fig. 1 is main process steps flow chart structural principle schematic block diagram of the present invention.

Fig. 2 is that the mensuration system that the present invention relates to forms the structural principle synoptic diagram.

Fig. 3 is that the database that the present invention relates to makes up the flowage structure schematic block diagram.

Fig. 4 is that the underground structure construction that the present invention relates to is to surface structures evaluation of effect flow process principle schematic.

Fig. 5 is that the surface structures that the present invention relates to is estimated the flowage structure principle schematic to underground structure function.

Embodiment:

Also be described further by reference to the accompanying drawings below by embodiment.

Embodiment:

Present embodiment is measured based on the ArcGIS software platform, comprises that figure amplifies, dwindles, translation; Figure and attribute data are mutually inquired about and are jointly shown at same interface; The assay result with scheme, the forms such as table and document show; The blasting vibration safety evaluation; Earth's surface distortion static (final form) and dynamically (deformation process) calculating; Surface structures gravity pressure circle calculates; The above ground structure Damage Evaluation; The underground structure Damage Evaluation; Grid of vector data and raster data vector quantization, numerical simulation software Interface Expanding commonly used; It is measured technique and comprises that database makes up, the underground structure construction is estimated three steps to surface structures evaluation of effect and surface structures construction to underground structure function:

(1) database makes up: the database of structure comprises basic database and assay database two parts, basic database comprises graphic data base and attribute database, wherein, graphic data base is used for storage topomap, planning chart, geologic map, drill drawing, surface structures distribution plan, underground structure distribution plan; Attribute database comprises ground buildings or structures information (such as civilian, industrial, dyke etc.), underground structure information (such as subterranean railway, underground storage, underground commerce etc.) and geological information (such as stratum, landforms, tectonic structure, hydrogeology, environmental geology and seismogeology etc.); The assay database comprises evaluation criterion database and evaluation result database, wherein, the evaluation criterion database comprises blasting vibration relevant criterion and evaluation index, earth's surface distortion relevant criterion and evaluation index, ground buildings or structures Damage Evaluation standard and evaluation index, underground structure safety assessment evaluation criterion and evaluation index; The evaluation result database is used for the inventory analysis evaluation result, through expanding the spatial database that forms figure and the seamless fusion of attribute database, being convenient to provides the pilot process result for next step evaluation, perhaps provide foundation for consulting from now on, according to storing in the database after the corresponding national regulation arrangement, simultaneously the means according to engineering site experience, theoretical research, numerical experimentation and analog material test obtain the correlative study achievement, and evaluation criterion in the database and evaluation index are enriched and perfect;

(2) the underground structure construction comprises that to the surface structures evaluation of effect blasting vibration safety evaluation, earth's surface distortion are estimated, surface structures gravity pressure circle calculates and the above ground structure Damage Evaluation; The blasting vibration safety evaluation on the known quick-fried heart to measuring point distance carry out the safe distance that maximum dose calculates, known maximum dose calculates blasting vibration, internal force, displacement response and the above ground structure of blasting vibration intensity, the earth construction comprehensive evaluation that affected by blasting vibration, and by setting up computation model, result of calculation is stored in the rating database; Earth's surface distortion static (final form) and dynamically (deformation process) expectation are carried out in earth's surface distortion expectation, adopt improved PECK formula and stochastic medium theory formula to carry out earth's surface distortion static (final form) prediction; The fractal interpolation computing method of employing independent research are calculated the deformation values in the deformation dynamics process of earth's surface, and corresponding figure and result of calculation are stored into the evaluation result database; The above ground structure Damage Evaluation carries out Damage Evaluation to the buildings site inspection result of the version of xoncrete structure and masonry structure respectively, by setting up numerical model, utilize the buildings damage forecast computation model of independent research, comprehensive evaluation is carried out in the damage to above ground structure that underground structure construction causes, and evaluation result is stored into evaluation according in the storehouse;

(3) the surface structures construction is to underground structure function evaluation, comprises that measure and calculation surface structures excavation of foundation pit causes the distortion of the Rock And Soil after the stress relief and underground structure stress, change in displacement situation, underground structure lining cutting stressing conditions and crack; Measure and calculation surface structures foundation ditch blasting vibration is on the impact of underground structure; The pressure coil that measure and calculation buildings gravity load causes by setting up analytical model, in rating database, is finished the mensuration of surface structures and underground structure interactively to the measure and calculation result store to the impact of underground structure.

The PECK formula that present embodiment relates to is:

$S\left(x\right)=\frac{V_l\·A_{\mathrm{\Ω}}}{\sqrt{2\mathrm{\π}}i}\exp (-\frac{x^2}{{2i}^2})$

Wherein, S is, x is the horizontal range from ground point corresponding to tunnel center line to institute's calculation level, V _lBe ground loss ratio, A _ΩThe area of position excavated section, i is the subsider width; The stochastic medium theory formula is: become ω after setting excavation cross-section region Ω distortion, this predefined collapse pattern is carried out integration with the surface subsidence that the unit excavation causes at the area that subsides, just can obtain the displacement of overlying strata, tunnel in this situation

$S\left(x\right)=S_{\mathrm{\Ω}}\left(x\right)-S_{\mathrm{\ω}}\left(x\right)=\underset{\mathrm{\Ω}-\mathrm{\ω}}{\∫\∫}\frac{\tan \mathrm{\β}}{\mathrm{\η}}\exp [-\frac{\mathrm{\π}{\tan }^2\mathrm{\β}}{{\mathrm{\η}}^2}{(x-\mathrm{\ξ})}^2]\mathrm{d\ξd\η}$

In the formula: β is the major effect angle of tunnel upper formation.

The ground settlement fractal interpolation computing method of the independent research that present embodiment relates to are:

A. use capacity dimension computes convergence fractal dimension of curve

R is the capacity yardstick;

B. calculate the regression equation ln[N (r) that box covers]=Dln (1/r)+b;

C. calculate ln[N (r)] and the related coefficient of ln (1/r) discrete point;

D. utilize the fractal difference of carrying out $f\left(x\right)=\frac{c_n}{a_n}(x-e_n)+d_{n}f\left(\frac{X-e_n}{a_n}\right)+h_n,$ x∈[x _n-1，x _n]

And calculating relative error σ=| (g-f)/g|.

In the formula $a_n=\frac{x_n-x_{n-1}}{x_N-x_0},$ $e_n=\frac{x_N{x}_{n-1}-x_0{x}_n}{x_N-x_0},$ $c_n=-\frac{(y_n-y_{n-1})(x_N-x_0)}{d_n(y_n-y_0)},$ $h_n=\frac{(x_N{y}_{n-1}-x_0{y}_n)}{x_N-x_0}-d_n\frac{(x_N{y}_0-x_0{y}_N)}{(x_N-x_0)},$ d _nBe the longitudinal compression factor, 0≤d _n≤ 1, n=1,2 ..., N, σ are relative error, g measured data, f interpolated data.

The buildings damage forecast computation model of the independent research that present embodiment relates to is:

$f({\mathrm{\σ}}_{\mathrm{\π}},{\mathrm{\τ}}_{\mathrm{\π}})=\frac{-B-\sqrt{B^2-\frac{4C(H\·A-{\mathrm{\σ}}_{\mathrm{\π}})}{H}}-\frac{2C\·{\mathrm{\τ}}_{\mathrm{\π}}}{H}}{-B-\sqrt{B^2-\frac{4C(H\·A-{\mathrm{\σ}}_{\mathrm{\π}})}{H}}}$

In the formula $H=\sqrt{3}{f}_c,$ A=1/3b， $B=-\sqrt{1/6}\mathrm{\λ}/b,$ C=-a/2b， ${\mathrm{\τ}}_{\mathrm{\π}}=\sqrt{2J_2},$ ${\mathrm{\σ}}_{\mathrm{\π}}=I_1/\sqrt{3}$ Be respectively shear stress and normal stress on the π plane, J ₂Be the second diviatoric stress tensor invariant, I ₁Be the first principal stress invariant.

The employed ArcGIS software platform of present embodiment is selected from the software systems product that U.S. ESRI company offers for sale, this software be can seamless expansion GIS platform series of products, be based upon on the industrial standard, have that function is large, easy to use, the advantage of friendly interface; It is integrated that present embodiment carries out secondary at the common component AO of ArcGIS9 software platform, each analysis module of VB, VC language compilation is added in the ArcGIS environment and realizes Function of Evaluation.

Claims (1)

1. a surface structures and underground structure interactively assay method is characterized in that it measures technique and comprise that database makes up, the underground structure construction is estimated three steps to surface structures evaluation of effect and surface structures construction to underground structure function:

(1) database makes up: the database of structure comprises basic database and assay database two parts, basic database comprises graphic data base and attribute database, wherein, graphic data base is used for storage topomap, planning chart, geologic map, drill drawing, surface structures distribution plan, underground structure distribution plan; Attribute database comprises above ground structure information, underground structure information and geological information; The assay database comprises evaluation criterion database and evaluation result database, wherein, the evaluation criterion database comprises blasting vibration relevant criterion and evaluation index, earth's surface distortion relevant criterion and evaluation index, above ground structure Damage Evaluation standard and evaluation index, underground structure safety assessment evaluation criterion and evaluation index; The evaluation result database is used for the inventory analysis evaluation result, through expanding the spatial database that forms figure and the seamless fusion of attribute database, being convenient to provides the pilot process result for next step evaluation, perhaps provide foundation for consulting from now on, according to storing in the database after the corresponding national regulation arrangement, simultaneously the means according to engineering site experience, theoretical research, numerical experimentation and analog material test obtain the correlative study achievement, and evaluation criterion in the database and evaluation index are enriched and perfect;

(2) the underground structure construction comprises that to the surface structures evaluation of effect blasting vibration safety evaluation, earth's surface distortion are estimated, surface structures gravity pressure circle calculates and the above ground structure Damage Evaluation; The blasting vibration safety evaluation on the known quick-fried heart to measuring point distance carry out the safe distance that maximum dose calculates, known maximum dose calculates blasting vibration, internal force, displacement response and the above ground structure of blasting vibration intensity, the earth construction comprehensive evaluation that affected by blasting vibration, and by setting up computation model, result of calculation is stored in the rating database; The earth's surface distortion is estimated to carry out earth's surface distortion Static and dynamic and is estimated, adopts improved PECK formula and stochastic medium theory formula to carry out earth's surface distortion static prediction; The fractal interpolation computing method of employing independent research are calculated the deformation values in the deformation dynamics process of earth's surface, and corresponding figure and result of calculation are stored into the evaluation result database; The above ground structure Damage Evaluation carries out Damage Evaluation to the buildings site inspection result of the version of xoncrete structure and masonry structure respectively, by setting up numerical model, utilize the buildings damage forecast computation model of independent research, comprehensive evaluation is carried out in the damage to above ground structure that underground structure construction causes, and evaluation result is stored into evaluation according in the storehouse;

(3) the surface structures construction is to underground structure function evaluation, comprises that measure and calculation surface structures excavation of foundation pit causes the distortion of the Rock And Soil after the stress relief and underground structure stress, change in displacement situation, underground structure lining cutting stressing conditions and crack; Measure and calculation surface structures foundation ditch blasting vibration is on the impact of underground structure; The pressure coil that measure and calculation buildings gravity load causes by setting up analytical model, in rating database, is finished the mensuration of surface structures and underground structure interactively to the measure and calculation result store to the impact of underground structure.

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