CN100999172A - Construction method of artificial landscape mountain - Google Patents

Construction method of artificial landscape mountain Download PDF

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Publication number
CN100999172A
CN100999172A CNA2006101479625A CN200610147962A CN100999172A CN 100999172 A CN100999172 A CN 100999172A CN A2006101479625 A CNA2006101479625 A CN A2006101479625A CN 200610147962 A CN200610147962 A CN 200610147962A CN 100999172 A CN100999172 A CN 100999172A
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China
Prior art keywords
massif
grieshoch
gsz
intensity
safety factor
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CNA2006101479625A
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CN100999172B (en
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徐宏跃
徐一峰
蒋应红
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Shanghai Urban Construction Design Research Institute Co ltd
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Shanghai Urban Construction Design Research Institute Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

The present invention discloses an artificial landscape mountain body construction method. Said construction method includes the following steps: on the ground surface to be used laying cement-lime mixture layer with a certain thickness, then on the cement-lime mixture layer laying and building geotechnical grille, on the described geotechnical grille further laying and building cement-lime mixture layer so as to form a reinforced cement-lime mixture layer with a certain strength, after said reinforced cement-lime mixture layer is hardened to form a reinforced hard shell, on the reinforced hard shell layer building mountain body.

Description

Construction method of artificial landscape mountain
Technical field
The present invention relates to the gardening construction field, relate in particular to a kind of method of building artificial landscape mountain.
Technical background
For satisfying people to the craving for of natural gardens, in the design of modern garden, building, artificial landscape mountain appears more and more continually, to form the physical features that rises and falls, build the atmosphere in nature gardens.In landscape design, because the sedimentation of massif integral body is little to environment, landscape impact, so the design of artificial landscape mountain and build the influence that mainly is subjected to the massif resistance to overturning.But in soft clay area (for example Shanghai), because at the bottom of poor, the intensity of ground soil property, though the face of land has one deck crust layer, this crust layer is often thinner, and intensity is not high.When filling higher massif, there is massif stability not meet design requirement and come down often, causes great accident (for example PVG Century Park landslide).Trace it to its cause, be mainly massif stressed unbalance due to.As shown in Figure 1, the force-bearing situation of massif is done a simple analysis:
1, will the be above the ground level massif A of G is reduced to a plurality of continuous analyzed native bar A1, A2, and, A i, A I+1,, An, the unstability of massif A comes down thereby is reduced to native bar A1, A2,, A i, A I+1,, the top-down circular arc of An slides native bar A iSlip angle be α i
2, with native bar A iBe example, native bar A iBecause of deadweight W iDecomposing force T iThe slip moment Ms that the center of circle O of relative sliding surface produces;
3, native bar A iIntensity depend primarily on cohesive strength and internal friction angle, form tangential shearing resistance τ at arc contact surface Fi
4, native bar A iShearing resistance act on the arc contact surface, relatively there is the stabilizing moment Mr that opposing is slided in side slope center of circle O;
5, the stable correlation that depends on slip moment Ms and stabilizing moment Mr of massif A.
As the above analysis, the effective means of raising massif stability is to reduce slip moment Ms and/or improve stabilizing moment Mr.
The prior art that is used to solve massif side slope destabilization problems also has multiple.Especially, as shown in Figure 2, for solving the problem of artificial massif side slope unstability, the technical scheme that adopts a kind of composite foundation B to combine with light material C in the prior art is analyzed as follows this technical scheme morely:
1, handles ground G with composite foundation B, ground (thick line part) intensity of ground G is increased, the square Mr that builds up one's resistance to disease, thereby the stability of raising massif.
2, fill massif with light material C (for example EPS, ultralight construction material, cost height), alleviate the gravity of native bar Ai, reduce slip moment Ms, thereby improve the stability of massif.
Technique scheme adopts composite foundation B itself to need bigger cost, and not only the processing cost height also has certain influence to surrounding enviroment.The cost of light material C is generally all higher, can improve the cost of artificial landscape mountain significantly.Therefore, the method for construction to artificial landscape mountain of the prior art obviously requires further improvement.
Summary of the invention
Because the above-mentioned defective of prior art, the technical problem to be solved in the present invention provides that a kind of cost is low, the construction method of artificial landscape mountain of good stability, non-environmental-pollution.
For achieving the above object, the invention provides a kind of construction method of artificial landscape mountain, may further comprise the steps:
At first, certain thickness two grieshoch of making on stand-by ground;
Then, making GSZ on described two grieshoch, and on described GSZ making two grieshoch once more, with reinforcement two grieshoch that form certain intensity;
At last, treat the dry and hard formation one reinforcement crust layer of described reinforcement two grieshoch after, heap is built massif on described reinforcement crust layer.
Preferably, in described two grieshoch, spacing ground is the described GSZ of making multilayer alternately, to form described reinforcement two grieshoch.
Preferably, choose the number of plies, the thickness of thickness, intensity and the described GSZ of described reinforcement crust layer according to massif buckling safety factor K, the computing formula of described massif buckling safety factor K is:
K = M r M s = R Σ i = 1 i = n ( W i cos α i tg φ i + c i l i ) + R Σ j = 1 j = m p j R Σ i = 1 i = n W i sin α i
Preferably, when the described massif buckling safety factor K that calculates is less than normal, increase thickness, the intensity of described reinforcement crust layer, perhaps increase the number of plies, the intensity of described GSZ, recomputate described massif buckling safety factor K, meet stability requirement until calculating the described massif buckling safety factor K that obtains.
Preferably, when the described massif buckling safety factor K that calculates is bigger than normal, for increasing the economy that massif is handled, reduce thickness, the intensity of described reinforcement crust layer, perhaps reduce the number of plies, the intensity of described GSZ, recomputate described massif buckling safety factor K, meet stability requirement until calculating the described massif buckling safety factor K that obtains.
Preferably, the ground of smooth predetermined build area forms described stand-by ground.
Preferably, described two grieshoch are that flyash adds lkd layer, and conventional formulation is a flyash 95%: lime 5%.
Preferably, be mixed with the binding agent of appropriate amount in described two grieshoch.
Preferably, described GSZ is chemical fibre warp knitting geogrid or polypropylene GSZ, and tensile strength is 20～50kN/m during 10% strain.
Construction method of artificial landscape mountain of the present invention, since at first on the ground making one reinforcement crust layer, be similar to armoured concrete slab, the reinforcement crust layer has made full use of characteristics such as the high compressive strength, scholar worker's grid high-tensile of lime-fly ash materials, the intensity of the ground of artificial landscape mountain is increased greatly, thereby increased the size of the moment of resistance that the massif slope sliding need overcome, improved the stability of massif.
Simultaneously and since the lime-fly ash materials of constructing crust layer from anharmonic ratio banket from heavy and light, alleviated the gravity of massif, also just reduced the size of the slip moment that causes the massif slope sliding, improved the stability of massif synchronously.
Because two ashes from heavy and light, can reduce the additional stress of substrate, thereby reduce the sedimentation of massif.Because reinforcement crust layer intensity height, rigidity are big, can obviously improve the basin shape sedimentation of massif in addition, reduce the maximum settlement of massif central point.The sedimentation of massif has been improved in above-mentioned two aspects, thereby has reduced the influence of massif sedimentation to surrounding enviroment, whole view.
Again on the one hand, because lime-fly ash materials, GSZ is with low cost and non-environmental-pollution, construction technology is ripe and convenient, thereby method of the present invention has also obtained reduction artificial landscape mountain cost techniques effect.
Be described further below with reference to the technique effect of accompanying drawing, to understand purpose of the present invention, feature and effect fully design of the present invention, concrete steps and generation.
Description of drawings
Fig. 1 is massif side slope unstability force analysis figure;
Fig. 2 is the force analysis figure of a technical scheme in the prior art;
Fig. 3 is the massif side slope force analysis figure of method of the present invention.
The specific embodiment
As shown in Figure 3, be massif side slope force analysis figure in the present invention's one specific embodiment, construction method of artificial landscape mountain of the present invention may further comprise the steps:
Usually, the ground of at first smooth predetermined build area forms stand-by ground G;
Then, certain thickness two grieshoch of making on stand-by ground G, promptly flyash adds lkd layer, and lays GSZ E every certain thickness spacing ground in two grieshoch 1,, E j, E m
Thereafter, treat that aforementioned flyash adds the dry and hard formation one reinforcement crust layer D of lkd layer after, heap is built massif A on reinforcement crust layer D.
It is this area lime-fly ash materials commonly used that aforementioned flyash adds lkd layer, and conventional formulation is a flyash 95%: lime 5%.For improving its cohesive strength, also can a certain proportion of binding agent of admixture or raising lime intermingled quantity.GSZ also is a geotechnological material commonly used in the engineering.
In specific embodiments of the invention, with native bar A iWith GSZ E jBe example, analyze the stressed of massif A.Soil bar A iBecause of deadweight W iDecomposing force T iThe center of circle O of slip circle produces one along massif A arc contact surface D relatively iSlip moment Ms.Soil bar A iIntensity depend primarily on self cohesive strength and internal friction angle, at arc contact surface D iThe tangential shearing strength τ of last formation Fi, GSZ E jPulling force along arc contact surface D iProduce component P in tangential direction j, native bar A iShearing resistance and GSZ E jComponent P jAct on arc contact surface D iOn, there is the stabilizing moment Mr that opposing is slided in center of circle O relatively.As slip moment Ms during greater than stabilizing moment Mr, massif will be driven along circular sliding surface to lower slider by slip moment Ms, forms massif A landslide; When slip moment Ms was not enough to overcome stabilizing moment Mr, massif can keep good stable can not slide.Therefore, the stability of massif A depends on the correlation of slip moment Ms and stabilizing moment Mr, in theory, slip moment Ms greater than stabilizing moment Mr then massif A can produce the landslide, stabilizing moment Mr greater than slip moment Ms then massif A keep stable.In actual applications, take all factors into consideration the factor that other influences massif, stabilizing moment still should leave part leeway.
In the prior art, at building engineering field, generally make full use of the ground of the high strong hardness of lime-fly ash materials after dry and hard, to keep the relative stability and the planarization of highway foundation and surrounding enviroment ground as highway.The relative highway foundation of massif ground, the stability of massif is far away important in the sedimentation of massif ground.The important difference of the present invention and prior art is, the present invention has adopted the technological means of making two grey reinforcement crust layers, high strong hardness utilization with lime-fly ash materials after dry and hard is on the stability that solves massif ground inside, set about from build up one's resistance to disease square and minimizing slip moment two aspects simultaneously, improved the stability of massif.
A beneficial effect of construction method of artificial landscape mountain of the present invention is, since at first on the ground making one reinforcement crust layer, the intensity of the ground of artificial landscape mountain increased greatly, thereby increased the size of the moment of resistance that slope sliding need overcome, improved the stability of massif.Owing to be making reinforcement crust layer on existing ground G, therefore can not produce the construction waste soil that the excavation ground brings, can not produce pollution to environment.
Another beneficial effect of the present invention is, because the lime-fly ash materials of constructing the reinforcement crust layer is light about 1/4 from anharmonic ratio original soil bar, and the deadweight W of massif A iDiminish thereupon, thereby implement the gravity that artificial landscape mountain that method of the present invention builds has alleviated slide mass, reduced to cause the slip moment of massif slope sliding, also improved the stability of massif.
Another beneficial effect of the present invention is, because two ashes from heavy and light, can reduce the additional stress of substrate, thereby reduces the sedimentation of massif.Because reinforcement crust layer intensity height, rigidity are big, can obviously improve the basin shape sedimentation of massif in addition, reduce the maximum settlement of massif central point.The sedimentation of massif has been improved in above-mentioned two aspects, thereby has reduced the influence of massif sedimentation to surrounding enviroment, whole view.
Simultaneously, beneficial effect of the present invention also is, because lime-fly ash materials, GSZ is with low cost and non-environmental-pollution, construction technology is ripe and convenient, thereby method of the present invention can also reduce the artificial landscape mountain cost.
Below describe the calculating principle, particularly reinforcement crust layer thickness of method of the present invention and the analysis of massif slope stability in detail:
After the reinforcement crust layer is set, the stability of slope calculating principle of stability Calculation and routine is basic identical, be severe γ and intensity index c, the φ of layering input soil layer equally, mainly be to want to determine under the compactness (generally being light-duty tamp standards 90%) of designing requirement the severe γ of two ashes (generally being 5% lime+95% flyash) and intensity index c, φ and predefined GSZ tensile strength N by laboratory test in advance.
Design conditions:
1, calculates the intensity c at native bar i arc contact surface place i, φ i
2, by each layer weighted average severe γ that calculates native bar i iThe native bar severe W that calculates i
3, GSZ tensile strength N, tangential direction component P j=Ncos α i
Computational process:
1, the supposition side slope is slided by center of circle O and radius R.
2, calculate slip moment Ms and the stabilizing moment Mr that the active force on the native bar i produces center of circle O:
Ms＝W iRsinα i
Mr＝(W icosα itgφ i+c il i+p j)R
L wherein iArc length for native bar.
3, calculating whole massif corresponding to the buckling safety factor of taking sliding surface is:
K = M r M s = R Σ i = 1 i = n ( W i cos α i tgφ i + c i l i ) + R Σ j = 1 j = m p j R Σ i = 1 i = n W i sin α i
4, constantly adjust center of circle O and radius R, the minimum of a value of search calculation stability safety coefficient K.
5, the minimum of a value that calculates K is the massif safety factor of slope.
6, if K does not satisfy code requirement, increase thickness, the intensity of described reinforcement crust layer, perhaps increase the number of plies, the intensity of GSZ, recomputate safety coefficient.
7, if stability and safety is too conservative, suitably reduce thickness, the intensity of reinforcement crust layer, perhaps reduce the number of plies, the intensity of GSZ, reduce construction costs.
According to above-mentioned analysis and calculating, by choosing the size of different K values, can determine number of plies, intensity of reinforcement crust layer thickness, intensity and the GSZ chosen in the specific embodiments of the invention etc., make the stability of the artificial landscape mountain of being built meet designing requirement.
In sum, be several preferred embodiment of the present invention described in this specification.All technical staff in the art all should be in claim protection domain of the present invention under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (9)

1, a kind of construction method of artificial landscape mountain may further comprise the steps:
At first, certain thickness two grieshoch of making on stand-by ground;
Then, making GSZ on described two grieshoch, and on described GSZ making two grieshoch once more, with reinforcement two grieshoch that form certain intensity;
At last, treat the dry and hard formation one reinforcement crust layer of described reinforcement two grieshoch after, heap is built massif on described reinforcement crust layer.
2, the method for claim 1 is characterized in that, in described two grieshoch, spacing ground is the described GSZ of making multilayer alternately, to form described reinforcement two grieshoch.
3, the method for claim 1 is characterized in that, chooses the number of plies, the thickness of thickness, intensity and the described GSZ of described reinforcement crust layer according to massif buckling safety factor K, and the computing formula of described massif buckling safety factor K is:
K = M r M s = R Σ i = 1 i = n ( W i cos α i tg φ i + c i l i ) + R Σ j = 1 j = m p j R Σ i = 1 i = n W i sin α i
4, method as claimed in claim 3, it is characterized in that, when the described massif buckling safety factor K that calculates is less than normal, increase thickness, the intensity of described reinforcement crust layer, perhaps increase the number of plies, the intensity of described GSZ, recomputate described massif buckling safety factor K, meet stability requirement until calculating the described massif buckling safety factor K that obtains.
5, method as claimed in claim 3, it is characterized in that, when the described massif buckling safety factor K that calculates is bigger than normal, for increasing the economy that massif is handled, reduce thickness, the intensity of described reinforcement crust layer, perhaps reduce the number of plies, the intensity of described GSZ, recomputate described massif buckling safety factor K, meet stability requirement until calculating the described massif buckling safety factor K that obtains.
6, the method for claim 1 is characterized in that, the ground of smooth predetermined build area forms described stand-by ground.
7, method as claimed in claim 1 or 2 is characterized in that, described two grieshoch are that flyash adds lkd layer, and conventional formulation is a flyash 95%: lime 5%.
8, method as claimed in claim 7 is characterized in that, is mixed with the binding agent of appropriate amount in described two grieshoch.
9, method as claimed in claim 1 or 2 is characterized in that, described GSZ is chemical fibre warp knitting geogrid or polypropylene GSZ, and tensile strength is 20～50kN/m during 10% strain.
CN200610147962A 2006-12-27 2006-12-27 Construction method of artificial landscape mountain Active CN100999172B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259476B (en) * 2008-04-18 2010-06-09 天津大学建筑设计研究院 Mountain stacked with pure caustic sludge and stacking method thereby
CN110700308A (en) * 2019-10-17 2020-01-17 西南交通大学 Design method for non-uniform laying of reinforced body in reinforced earth structure
CN115122818A (en) * 2022-07-31 2022-09-30 中冶赛迪工程技术股份有限公司 Artificial landscape mountain body for coastal flushing and filling area and construction method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1038994C (en) * 1991-02-07 1998-07-08 潘正吾 Construction method of rockery
CN1038443C (en) * 1991-07-05 1998-05-20 范业铎 Architectural structure with artificial mountains, waters and gardens
CN1198992C (en) * 2002-03-04 2005-04-27 天津市市政工程研究院 Reinforced earth retaining wall suitable for soft soil ground and its construction method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259476B (en) * 2008-04-18 2010-06-09 天津大学建筑设计研究院 Mountain stacked with pure caustic sludge and stacking method thereby
CN110700308A (en) * 2019-10-17 2020-01-17 西南交通大学 Design method for non-uniform laying of reinforced body in reinforced earth structure
CN110700308B (en) * 2019-10-17 2021-05-28 西南交通大学 Design method for non-uniform laying of reinforced body in reinforced earth structure
CN115122818A (en) * 2022-07-31 2022-09-30 中冶赛迪工程技术股份有限公司 Artificial landscape mountain body for coastal flushing and filling area and construction method

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