CN107100184A - Caved in the composite foundation and construction method with sapping area for arid biogeographic zone earthen ruins - Google Patents
Caved in the composite foundation and construction method with sapping area for arid biogeographic zone earthen ruins Download PDFInfo
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- CN107100184A CN107100184A CN201710421028.6A CN201710421028A CN107100184A CN 107100184 A CN107100184 A CN 107100184A CN 201710421028 A CN201710421028 A CN 201710421028A CN 107100184 A CN107100184 A CN 107100184A
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- sticky rice
- rice syrup
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- composite foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
Abstract
For arid area earthen ruins caving zone and the composite foundation and construction method in sapping area, composite foundation includes top and is modified the grey soil layer of sticky rice syrup from top to bottom（1）, bottom stone block building bed course（2）, wherein bottom stone block building bed course（2）Including block stone（21）And between stone filling space modification glutinous rice mortar（22）.The step of its construction method is：（1）Prepare sticky rice syrup；（2）Prepare modified sticky rice syrup dirt（11）；（3）Prepare modified glutinous rice mortar（22）；（4）Gib：The method being combined using hard and soft, effective support top ruins body caving zone（10）Or sapping area（11）The soil body；（5）Foundation trench is excavated；（6）Formwork：By ruins body pre-reinforcement area free face（8）It is used as template, other three faces formworks；（7）Stone block building；（8）Building is modified sticky rice syrup dirt；（9）Form removal；（10）Maintenance；（11）Above step is repeated, next section of adjacent composite foundation of constructing.
Description
Technical field
The present invention relates to earthen ruins caving zone and the foundation consolidating technology in sapping area.
Background technology
The numerous earthen ruins of NW China arid area remnants, arid, short of rain, windy and high evaporation capacity it is severe
Weather makes these earthen ruins gradually undergo to be developed to disappearance amount-qualitative change process totally by disease, wherein sapping, crack, cave in
It is earthen ruins the most universal and typical disease, the safe preservation in ruins has seriously been threatened.These diseases development directly or
What is connect is equal relevant with the sapping disease of earthen ruins wall bottom.Under conditions of rainfall and rapid evaporation, because capillary water rises
Effect, directly result in wall base soil structures and intensity wreck, or cause the native water salt of the wall base under the conditions of drying and watering cycle indirectly
The salt occurred of migrating is swollen and caused frost heave under freeze-thaw cycles, can cause wall root soil structures and intensity by broken
It is bad --- root salt marsh is deteriorated, and is then lost under the abrasion of common sand-carrying wind and deflation, quality is lost rapidly, from
And occur wind erosion loss and form bottom cavity --- sapping area, the further expanding of cavity will induce ruins occur it is local broken
It is bad --- caving zone, or even entirety are toppled.Therefore, composite foundation is the technical measures of earthen ruins body foundation stabilization.
Meet on the basis of traditional handicraft, the historical relic's protection theory of raw material, composite foundation has blocked ground capillary water to rise, it is to avoid
The development of basal sapping disease caused by the inducement risen due to capillary water, and foundation bearing capacity is greatly improved, have
Foundation settlement deformation under complement load action is built on effect control top, and weather resistance is remarkably reinforced.
The content of the invention
The purpose of the present invention blocks ground capillary moisture and salt regime, prevents the generous amount of caving zone from building complement sedimentation and deformation.
The present invention is the composite foundation and construction method caved in for arid biogeographic zone earthen ruins with sapping area, for arid area
Earthen ruins caving zone and the composite foundation in sapping area, the composite foundation include top and are modified the grey soil layer 1 of sticky rice syrup from top to bottom, under
Portion's stone block building bed course 2, wherein bottom stone block building bed course 2 include the modification glutinous rice ash in space between block stone 21 and stone filling
Slurry 22.
For the construction method of arid area earthen ruins caving zone and sapping area composite foundation, its step is：
（1）Prepare sticky rice syrup：By glutinous rice flour and water in mass ratio 3:97 ratio is mixed, stirs evenly, boiled, and boils rear continuous heating
More than 4 hours, sticky rice syrup is fully cured, during which uninterruptedly add water, keep the concentration of sticky rice syrup constant, last slurry temperature drop
To room temperature, a little preservative, deposit are added；
（2）Prepare modified sticky rice syrup dirt 11：
A. grey earth material is selected：Lime selects more than III grade of calcareous quick lime, is fully cleared up before use；Lost from original
The close earth material of location soil, earth material salt content is less than 0.5%；And lime and earth material are crossed to diameter 5mm sieve, by volume 3:7 mixs
Uniformly, it is prepared into dirt；
B. by step（a）It is middle to prepare grey earth material and the uniform mix of sticky rice syrup, live compaction test is done, optimum moisture content and most is obtained
Big dry density；
C. optimum moisture content is obtained according to the modified compaction test of sticky rice syrup dirt 11, makes the modification sticky rice syrup dirt 11 used in construction
Moisture content control errors load plastics within ± 2% scope of optimum moisture content, and by the modification sticky rice syrup dirt 11 of preparation
Water-keeping bag, it is to avoid sunlight directly shines, is conserved 24 hours；
（3）Prepare modified glutinous rice mortar 22：From more than III grade（Containing III grade）Quick lime and flyash, and by lime and flyash
Cross diameter 5mm sieve, in mass ratio 1:1 mix is uniform, is then that 0.35 ~ 0.45 addition sticky rice syrup mix is uniform by the ratio of mud；
（4）Gib：The method being combined using hard and soft, effective support top ruins body caving zone 10 or the soil of sapping area 11
Body, prevents the unstable deformation of the ruins body 3 caused by vibration in work progress；
（5）Foundation trench is excavated：The position of sideline 7 on the outside of composite foundation is determined with measuring instrument according to engineering design；Clear up ruins body 3
The void product soil of root or the soil that caves in, until cleaning out original basis layer ground 4, cleaning area is the level of sideline 7 on the outside of composite foundation
Extend 40cm scope to wall outer side；Sideline 7 cuts out foundation trench contour line, hand excavation to reserved design on the outside of along composite foundation
Depth；Cell wall repairs neat, pats into smooth surface；
If cell wall soil property is more dry, smooth surface can be patted into after sprinkling spray water wetting appropriate to cell wall；By bottom land levelling, according to scene
Situation selection is adapted to utensil and tamps substrate；
（6）Formwork：It regard ruins body pre-reinforcement area free face 8 as template, other three faces formworks；
Pin, pin buried depth 300mm, it is ensured that building hammer ram can vertically exert a force are transplanted inside foundation trench, and is changed ramming top in advance
Property the grey soil layer 1 of sticky rice syrup at template is disposed firm；
（7）Stone block building：One layer of block stone 21 is built by laying bricks or stones by substrate, then filled modified glutinous rice mortar 22 and the space of block stone 21；
Repeat masonry block stone 21 and fill modified glutinous rice mortar 22 in block 21 space of stone the step of, and sequentially into designed elevation；
（8）Building is modified sticky rice syrup dirt：According to compacted thickness 200mm, modified sticky rice syrup dirt 11 is pressed into default loose laying depth,
Pave on block stone, non-firm offer of first receiving is stepped on, then using the modified sticky rice syrup dirt 11 of the empty paving of sharp bottom hammer ram compacting, meet compactness K
≥0.95；
（9）Form removal：The modified grey building of soil layer 1 of sticky rice syrup is completed, and mould therefor is removed, the turbinate eye that pin is extracted, which is inserted, to be changed
Property sticky rice syrup dirt 11, and tamp；
（10）Maintenance：After the completion of Composite foundation construction, the grey soil layer 11 of sticky rice syrup is modified using covered rearing with plastic film upper strata, maintenance is not
Less than 7 days；
（11）Above step is repeated, next section of adjacent composite foundation of constructing.
The beneficial effects of the invention are as follows：The present invention blocks capillary water to enter sapping and disease of caving in by following many aspects
The treatment region root soil body, the bearing capacity for improving ground and the sedimentation and deformation and the weather resistance of ground that reduce ground.Institute
Obtain cheap using material, environment friendly and pollution-free and strong with ruins body compatible deformation performance using material, compatibility is good, more
The good theory for having responded historical relic's protection.Construction technology is easy, solves moisture and salt regime and causes caused by the crisp alkali of the earthen ruins wall base
Earthen ruins wall unstability.Major advantage is：1. by using 10 ~ 20cm of particle diameter stone block building, and used modification glutinous
Rice mortar effectively coheres block stone, and using compacted thickness 20cm modification glutinous rice by dirt, these measures are beneficial
Block capillary water in composite foundation to rise, and improve foundation bearing capacity；The levelling compacting of foundation trench bottom makes bottom land smooth, increases
Big bottom land area soil body compactness and intensity；It is compound ground that ruins body pre-reinforcement area square staff level is extended into 20cm to outside wall
The design in sideline on the outside of base, beneficial increases foundation bearing area.2. composite foundation material therefor by natural temperature, humidity,
The influence such as Frozen-thawed cycled is little, significantly improves the weather resistance of ground.By the modification glutinous rice mortar of the sticky rice syrup mixing cured
It is decreased obviously with the infiltration coefficient of modified sticky rice syrup dirt, enhances its resistance to water-destructible property, cohesive force, unconfined compressive strength.
3. sticky rice syrup dirt, block stone and modified glutinous rice mortar raw material sources are modified extensively, it is more economical convenient that sticky rice syrup makes.Foundation trench is opened
The soil body of digging is abandoned but also as ruins caving zone and the raw material of sapping area building soil, whole work progress, outer without dregs
Link, while environmental pollution is turn avoid, with extremely strong economy and the feature of environmental protection.4. stone block building layer is more easy to be compatible with ruins
The wall base position soil body；Building soil of the grey soil layer of the modification sticky rice syrup of compacting more compatible with the caving zone or sapping area being overlying on thereon
Layer.It is strong using material and ruins body compatible deformation, compatibility, preferably respond the theory of historical relic's protection.5. using construction
Technique is the traditional handicrafts such as foundation trench excavation, stone block building, slurries mix, grey rammed earth, simple and quick.The present invention is completely full
The demand that sufficient ruins caving zone and the wall base in sapping area are reinforced in terms of required physics, mechanics and water reason, compatible result is good,
Meet the basic demand that traditional handicraft is repaired in historical relic's protection, be that the scientific civil engineering in ancient times that is able to of traditional handicraft builds engineering practice
Reproduction, it provides technical support to save the ancient times earth construction site that caves in of large area.
Brief description of the drawings
Fig. 1 is the structural representation of composite foundation of the present invention, and Fig. 2 is that the present invention is used for earthen ruins caving zone and sapping area
The structural representation of composite foundation, Fig. 3 is that the grey soil layer horizontal direction one of modified sticky rice syrup rams nest position view, and Fig. 4 is to change
Property the grey soil layer horizontal direction two of sticky rice syrup ram nest position view, reference and correspondence are entitled：Modified sticky rice syrup dirt
Layer 1, modified sticky rice syrup dirt 11, stone block building layer 2, block stone 21, ruins body 3, original basis layer ground 4, ruins body pre-add
Gu sideline 7 on the outside of area's metope 5, ruins body pre-reinforcement area square staff 6, composite foundation, ruins body pre-reinforcement area free face 8,
Sideline 9 on the inside of composite foundation, caving zone 10, sapping area 11.
Embodiment
The present invention is the composite foundation and construction method for arid area earthen ruins caving zone and sapping area, such as Fig. 1, figure
Shown in 2, of the invention is used for arid area earthen ruins caving zone and the composite foundation in sapping area, including top is modified sticky rice syrup ash
Soil layer 1, wherein bottom stone block building bed course 2, bottom stone block building bed course 2 include space between block stone 21 and stone filling and changed
Property glutinous rice mortar 22.
As shown in Figure 1 and Figure 2, sideline 7 is located at along the level of ruins body pre-reinforcement area square staff 6 to wall on the outside of composite foundation
At outer extension 20cm.
As shown in Figure 1 and Figure 2, the compacted thickness that top is modified the grey soil layer 1 of sticky rice syrup is 20cm.
As shown in Figure 1 and Figure 2, the thickness of bottom stone block building bed course 2 is 400 ~ 600mm and the particle diameter of block stone 21 used is 100
~200mm。
The present invention's is used for the construction method of arid area earthen ruins caving zone and sapping area composite foundation, and its step is：
（1）Prepare sticky rice syrup：By glutinous rice flour and water in mass ratio 3:97 ratio is mixed, stirs evenly, boiled, and boils rear continuous heating
More than 4 hours, sticky rice syrup is fully cured, during which uninterruptedly add water, keep the concentration of sticky rice syrup constant, last slurry temperature drop
To room temperature, a little preservative, deposit are added；
（2）Prepare modified sticky rice syrup dirt 11：
A. grey earth material is selected：Lime selects more than III grade of calcareous quick lime, is fully cleared up before use；Lost from original
The close earth material of location soil, earth material salt content is less than 0.5%；And lime and earth material are crossed to diameter 5mm sieve, by volume 3:7 mixs
Uniformly, it is prepared into dirt；
B. grey earth material and the uniform mix of sticky rice syrup will be prepared in a, does live compaction test, obtained optimum moisture content and maximum dry is close
Degree；
C. optimum moisture content is obtained according to the modified compaction test of sticky rice syrup dirt 11, makes the modification sticky rice syrup dirt 11 used in construction
Moisture content control errors load plastics within ± 2% scope of optimum moisture content, and by the modification sticky rice syrup dirt 11 of preparation
Water-keeping bag, it is to avoid sunlight directly shines, is conserved 24 hours；
（3）Prepare modified glutinous rice mortar 22：From more than III grade (contain III grade) quick lime and flyash, and by lime and flyash
Cross diameter 5mm sieve, in mass ratio 1:1 mix is uniform, is then that 0.35 ~ 0.45 addition sticky rice syrup mix is uniform by the ratio of mud；
（4）Gib：The method being combined using hard and soft, effective support top ruins body caving zone 10 or the soil of sapping area 11
Body, prevents the unstable deformation of the ruins body 3 caused by vibration in work progress；
（5）Foundation trench is excavated：The position of sideline 7 on the outside of composite foundation is determined with measuring instrument according to engineering design；Clear up ruins body 3
The void product soil of root or the soil that caves in, until cleaning out original basis layer ground 4, cleaning area is the level of sideline 7 on the outside of composite foundation
Extend 40cm scope to wall outer side；Sideline 7 cuts out foundation trench contour line, hand excavation to reserved design on the outside of along composite foundation
Depth；Cell wall repairs neat, pats into smooth surface.If cell wall soil property is more dry, it can be patted after sprinkling spray water wetting appropriate to cell wall
Into smooth surface；By bottom land levelling, suitable utensil is selected to tamp substrate according to field condition；
（6）Formwork：It regard ruins body pre-reinforcement area free face 8 as template, other three faces formworks.Wood is transplanted inside foundation trench
Post, pin buried depth 300mm, it is ensured that building hammer ram can vertically exert a force, and be modified mould ramming top in advance at the grey soil layer 1 of sticky rice syrup
Plate placement is firm；
（7）Stone block building：One layer of block stone 21 is built by laying bricks or stones by substrate, then filled modified glutinous rice mortar 22 and the space of block stone 21；Weight
Answer masonry block stone 21 and fill modified glutinous rice mortar 22 the step of block 21 space of stone, and sequentially into designed elevation；
（8）Building is modified sticky rice syrup dirt：According to compacted thickness 200mm, modified sticky rice syrup dirt 11 is pressed into default loose laying depth,
Pave on block stone, non-firm offer of first receiving is stepped on, then using the modified sticky rice syrup dirt 11 of the empty paving of sharp bottom hammer ram compacting, it is ensured that modified glutinous rice
During the global density and quality of the grey soil layer 22 of slurry, building, in a row tamped in order with sharp bottom hammer ram, be typically that head rams punching sea
Nest, two building silver ingots and the punching of remaining rammer such as chop ditch, made even at the combination building（As shown in Figure 4）, meet compactness K >=0.95；
（9）Form removal：The modified grey building of soil layer 1 of sticky rice syrup is completed, and mould therefor is removed, the turbinate eye that pin is extracted, which is inserted, to be changed
Property sticky rice syrup dirt 11, and tamp；
（10）Maintenance：After the completion of Composite foundation construction, the grey soil layer 11 of sticky rice syrup is modified using covered rearing with plastic film upper strata, maintenance is not
Less than 7 days；
（11）Above step is repeated, next section of adjacent composite foundation of constructing.
Claims (5)
1. the composite foundation for arid area earthen ruins caving zone and sapping area, it is characterised in that the composite foundation is from upper
Include top down and be modified the grey soil layer of sticky rice syrup（1）, bottom stone block building bed course（2）, wherein bottom stone block building bed course（2）Including
Block stone（21）And between stone filling space modification glutinous rice mortar（22）.
2. according to claim 1 for arid area earthen ruins caving zone and the composite foundation in sapping area, its feature exists
In sideline on the outside of composite foundation（7）Positioned at along ruins body pre-reinforcement area square staff（6）Level extends at 20cm to outside wall.
3. according to claim 1 for arid area earthen ruins caving zone and the composite foundation in sapping area, its feature exists
In the top is modified the grey soil layer of sticky rice syrup（1）Compacted thickness be 20cm.
4. according to claim 1 for arid area earthen ruins caving zone and the composite foundation in sapping area, its feature exists
In bottom stone block building bed course（2）Thickness is 400 ~ 600mm and block stone used（21）Particle diameter is 100 ~ 200mm.
5. the construction method for arid area earthen ruins caving zone and sapping area composite foundation, it is characterised in that its step is：
（1）Prepare sticky rice syrup：By glutinous rice flour and water in mass ratio 3:97 ratio is mixed, stirs evenly, boiled, and boils rear continuous heating
More than 4 hours, sticky rice syrup is fully cured, during which uninterruptedly add water, keep the concentration of sticky rice syrup constant, last slurry temperature drop
To room temperature, a little preservative, deposit are added；
（2）Prepare modified sticky rice syrup dirt（11）：
A. grey earth material is selected：Lime selects more than III grade of calcareous quick lime, is fully cleared up before use；Lost from original
The close earth material of location soil, earth material salt content is less than 0.5%；And lime and earth material are crossed to diameter 5mm sieve, by volume 3:7 mixs
Uniformly, it is prepared into dirt；
B. by step（a）It is middle to prepare grey earth material and the uniform mix of sticky rice syrup, live compaction test is done, optimum moisture content and most is obtained
Big dry density；
C. according to modified sticky rice syrup dirt（11）Compaction test obtains optimum moisture content, makes the modification sticky rice syrup dirt used in construction
（11）Moisture content control errors within ± 2% scope of optimum moisture content, and by the modification sticky rice syrup dirt of preparation（11）Dress
Enter plastics water-keeping bag, it is to avoid sunlight directly shines, conserve 24 hours；
（3）Prepare modified glutinous rice mortar（22）：From more than III grade (contain III grade) quick lime and flyash, and by lime and fine coal
Ash crosses diameter 5mm sieve, in mass ratio 1:1 mix is uniform, is then that 0.35 ~ 0.45 addition sticky rice syrup mix is equal by the ratio of mud
It is even；
（4）Gib：The method being combined using hard and soft, effective support top ruins body caving zone（10）Or sapping area（11）
The soil body, prevents the ruins body caused by vibration in work progress（3）Unstable deformation；
（5）Foundation trench is excavated：Sideline on the outside of composite foundation is determined with measuring instrument according to engineering design（7）Position；Clear up ruins sheet
Body（3）The void product soil of root or the soil that caves in, until cleaning out original basis layer ground（4）, cleaning area is composite foundation outer side edges
Line（7）Level extends 40cm scope to wall outer side；Sideline on the outside of along composite foundation（7）Foundation trench contour line is cut out, is manually opened
Dig to reserved projected depth；Cell wall repairs neat, pats into smooth surface；
If cell wall soil property is more dry, smooth surface can be patted into after sprinkling spray water wetting appropriate to cell wall；By bottom land levelling, according to scene
Situation selection is adapted to utensil and tamps substrate；
（6）Formwork：By ruins body pre-reinforcement area free face（8）It is used as template, other three faces formworks；
Pin, pin buried depth 300mm, it is ensured that building hammer ram can vertically exert a force are transplanted inside foundation trench, and is changed ramming top in advance
Property the grey soil layer of sticky rice syrup（1）Template is disposed firm by place；
（7）Stone block building：One layer of block stone is built by laying bricks or stones by substrate（21）, then will modified glutinous rice mortar（22）Fill and block stone（21）It is empty
Gap；
Repeat masonry block stone（21）With will modified glutinous rice mortar（22）Fill in block stone（21）The step of space, and sequentially into design
Absolute altitude；
（8）Building is modified sticky rice syrup dirt：According to compacted thickness 200mm, by modified sticky rice syrup dirt（11）By default Song Puhou
Degree, paves on block stone, non-firm offer of first receiving is stepped on, then using the modified sticky rice syrup dirt of the empty paving of sharp bottom hammer ram compacting（11）, meet pressure
Solidity K >=0.95；
（9）Form removal：The modified grey soil layer of sticky rice syrup（1）Building is completed, and mould therefor is removed, and the turbinate eye that pin is extracted is inserted
Modified sticky rice syrup dirt（11）, and tamp；
（10）Maintenance：After the completion of Composite foundation construction, the grey soil layer of sticky rice syrup is modified using covered rearing with plastic film upper strata（11）, maintenance
Not less than 7 days；
（11）Above step is repeated, next section of adjacent composite foundation of constructing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421028.6A CN107100184B (en) | 2017-06-07 | 2017-06-07 | Composite foundation for soil site collapse and undercut area in arid area and construction method |
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|---|---|---|---|
| CN201710421028.6A CN107100184B (en) | 2017-06-07 | 2017-06-07 | Composite foundation for soil site collapse and undercut area in arid area and construction method |
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| CN107100184A true CN107100184A (en) | 2017-08-29 |
| CN107100184B CN107100184B (en) | 2023-06-06 |
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ID=59659773
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108643163A (en) * | 2018-06-06 | 2018-10-12 | 敦煌研究院 | A kind of salt damage prevention basis and earthen ruins reinforcement means |
| CN109839313A (en) * | 2019-03-08 | 2019-06-04 | 敦煌研究院 | A kind of full size rammed earth test wall root sapping process stress characterizing method |
| CN112627161A (en) * | 2020-12-10 | 2021-04-09 | 西京学院 | Construction method of lime-soil compaction pile added with glutinous rice pulp |
| CN113310848A (en) * | 2021-04-28 | 2021-08-27 | 上海大学 | Salt control technology for immovable cultural relics |
| CN115259812A (en) * | 2022-07-15 | 2022-11-01 | 浙江大学 | Formula of four-in-one soil and in-situ remediation method for soil ruins |
| CN116516923A (en) * | 2023-06-21 | 2023-08-01 | 兰州理工大学 | Structure for treating earthen site foundation and application method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643163A (en) * | 2018-06-06 | 2018-10-12 | 敦煌研究院 | A kind of salt damage prevention basis and earthen ruins reinforcement means |
| CN109839313A (en) * | 2019-03-08 | 2019-06-04 | 敦煌研究院 | A kind of full size rammed earth test wall root sapping process stress characterizing method |
| CN109839313B (en) * | 2019-03-08 | 2023-12-26 | 敦煌研究院 | Full-scale ramming soil test wall root undercut process stress characterization method |
| CN112627161A (en) * | 2020-12-10 | 2021-04-09 | 西京学院 | Construction method of lime-soil compaction pile added with glutinous rice pulp |
| CN113310848A (en) * | 2021-04-28 | 2021-08-27 | 上海大学 | Salt control technology for immovable cultural relics |
| CN115259812A (en) * | 2022-07-15 | 2022-11-01 | 浙江大学 | Formula of four-in-one soil and in-situ remediation method for soil ruins |
| CN116516923A (en) * | 2023-06-21 | 2023-08-01 | 兰州理工大学 | Structure for treating earthen site foundation and application method thereof |
| CN116516923B (en) * | 2023-06-21 | 2024-01-26 | 兰州理工大学 | Structure for treating earthen site foundation and application method thereof |
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