CN105569073B - Suspension type change wall thickness ellipse is inverse to be made vertical shaft and its becomes wall thickness setting method - Google Patents
Suspension type change wall thickness ellipse is inverse to be made vertical shaft and its becomes wall thickness setting method Download PDFInfo
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- CN105569073B CN105569073B CN201510987993.0A CN201510987993A CN105569073B CN 105569073 B CN105569073 B CN 105569073B CN 201510987993 A CN201510987993 A CN 201510987993A CN 105569073 B CN105569073 B CN 105569073B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
Abstract
Make vertical shaft with inverse the present invention relates to civil engineering, particularly a kind of suspension type change wall thickness ellipse is inverse to be made vertical shaft and its becomes wall thickness setting method, the inverse structural feature for making vertical shaft is, include plural number and save the oval borehole wall, constructed for assembling reinforcement casting concrete, often the major axis radius of the section borehole wall is identical with minor axis radius, and the borehole wall in the top is that inverted L shape constructs, each section borehole wall is saved by the distributing bar side of being connected thereto one in the assembling reinforcement of the borehole wall afterwards, until inverse make vertical shaft connection subterranean tunnel.Become the setting method of wall thickness based on the earth lateral pressure of reality, choose and adjust the wall thickness value of the borehole wall, obtain the ratio of reinforcement of zone of reasonableness, finally adjust and determine borehole wall wall thickness value.So, the weight of each section borehole wall is carry downwards in a manner of transmitting the preliminary shaft of inverted L shape, overall Path of Force Transfer is clear, effectively increase the borehole wall by power load, shaft structure can be simplified by becoming the construction of wall thickness, rationally reduce and take up an area width, while simplify operational procedure, reduce construction work amount.
Description
Technical field
Make vertical shaft with inverse the present invention relates to a kind of civil engineering, particularly a kind of suspension type change wall thickness ellipse is inverse to make vertical shaft
And its become wall thickness setting method.
Background technology
In the prior art, the contrary sequence method vertical shaft of domestic underground engineering uses rectangle and circular cross sections structure, vertical shaft
Side wall is waits wall thickness framework, but the vertical shaft of circular configuration, based on being pressurized, arrangement of reinforcement is small, but its low space utilization, occupation of land face
Area is big；Headroom utilization rate is high in the vertical shaft well of rectangular configuration, it is small to take up an area, but its structure is so that by based on curved, arrangement of reinforcement is big, construction
Difficulty is big.And existing technology, either rectangle or circular well, it is deep larger digging all using wall thickness arrangements of reinforcement such as upper and lower, surroundings
Work shaft in, it is less economical.In addition, during using reverse construction, due to after soil excavation, shaft wall pour preceding presence
One soil body faces the time of sky, then can not form native arch excavating side wall using rectangular well, then side wall soil can be caused to cave in, and then
Cause construction accident.
Chinese patent ZL 201520024209.1, which is provided, a kind of is hampered that the ellipse removed obstacles is inverse to be erected for push pipe jacking
Well, using oval contrary sequence method vertical shaft, circular configuration and rectangular configuration stress are good, arrangement of reinforcement is small, floor space is small etc. can be had concurrently
Advantage, but the structure of vertical shaft described in the art solutions constructs for vertical reducing, is divided into the part of upper, middle and lower three, top
Use and dehisce construction outside to stablize shaft collar, middle part sets circular table as workbench, while reinforces the part borehole wall；Under
Portion's vertical shaft internal diameter is more than middle part, and using multiple supporting frameworks, main purpose is to serve jacking construction troubleshooting, is provisional knot
Structure.
Although above-mentioned patented technology make use of the vertical shaft of ellipse, but be also only that circle is entered according to the scope of barrier
The appropriate adjustment of row, the inverse construction advantage for making vertical shaft of ellipse is not given full play to；Other above-mentioned patented technology and prior art
It is inverse make vertical shaft using etc. wall thickness framework, this thickness for being primarily due to side wall soil excavation is difficult to accurately control, usually
Cause to backbreak, using etc. wall thickness structure be easy to Construction control；And the concrete square amount caused by wall thickness structure such as use will not increase
Add excessive.But in practice of construction, because the earth lateral pressure of vertical shaft either short transverse or lateral part all respectively has not
Together, so, otherwise vertical shaft entirety discontinuity, or change shaft wall structure above and below vertical shaft or borehole wall ID is fitted
Different earth lateral pressures is answered, causes shaft structure complicated, Path of Force Transfer is crisscross between the different segment borehole wall, construction work amount
Increase, construction investment are higher.
The content of the invention
It is an object of the invention to clear, the raising borehole wall according to a kind of Path of Force Transfer is provided in place of the deficiencies in the prior art
By power load, the suspension type change wall thickness ellipse of simplified shaft structure is inverse to be made vertical shaft and its becomes wall thickness setting method.
Suspension type of the present invention becomes the inverse purpose for making vertical shaft of wall thickness ellipse and realized by following approach：
Suspension type becomes wall thickness ellipse against vertical shaft is made, and its structural feature is, includes plural number and saves the oval borehole wall, to tie up
Casting concrete of wire-tiing constructs, and often the major axis inside radius a of the elliptic cross-section of the section borehole wall is identical, short axle inside radius b is identical,
The borehole wall of the top is the preliminary shaft of inverted L shape construction, and standing portion is located at the inverse the top borehole wall for making vertical shaft, and lateral part is then parallel
In ground, and it is fixedly installed on foundation soil, each section borehole wall saves well by the distributing bar side of being connected thereto one afterwards
In the assembling reinforcement of wall, until inverse make vertical shaft connection subterranean tunnel；The elliptic cross-section of borehole wall wall thickness t at major axisbWith short axle
Locate wall thickness taRatio be 0.5≤(tb/ta)≤1.0, while inverse often section borehole wall wall thickness of the vertical shaft along short transverse of making is according to soil
Lateral pressure adjusts the wall thickness of acquisition.
The inverted L shape construction borehole wall is the whole inverse preliminary shaft for making vertical shaft, and foundation soil, inverted L are passed to by the structure of ground segment
Type structure presses flexural member arrangement of reinforcement.Against vertical shaft is made, for merogenesis against pouring, each section borehole wall below preliminary shaft uses structure from top to bottom
Reinforcing bar is made to be attached, so, by distributing bar by all side wall weight transmittings below a certain section borehole wall to this section side wall,
The preliminary shaft of inverted L shape is finally transmitted to, now inverted L shape preliminary shaft is a kind of suspended structure, is suspended on ground foundation soil, to transmit
Mode carry the weight of each section borehole wall downwards, overall Path of Force Transfer is clear, inverse to make under such actuating system construction
The inside cross-sectional of vertical shaft can be made unanimously, effectively increase being constructed by power load, the simplified borehole wall for the borehole wall.
Because the elliptic cross-section of the borehole wall is variant in major axis and short-axis direction stress size, on Impact direction and not
With, wall thickness t at short axleaStress moment of flexure to be bent into well, and wall thickness t at major axisbStress moment of flexure be to well outside sweep,
Therefore, in order to further improve the stress utilization rate of side wall construction, the present invention is provided with the borehole wall of elliptic cross-section in major axis side
To with the different construction of wall thickness on short-axis direction, via it is multiple calculate, test and experiment obtain long axis direction and short axle
Wall-thickness ratio on direction, i.e., obtain the stress utilization rate of more preferable side wall construction by using the structure for becoming wall thickness.In addition,
In the short transverse of vertical shaft, due to the borehole wall using unified internal diameter, therefore the stress for often saving the borehole wall in the height direction is also not
With, it is necessary to according to reality earth lateral pressure adaptive setting obtain.Since then, the same of underslung borehole wall force transfer structure is being set
When, using laterally, longitudinal direction become the vertical shaft of wall thickness and construct, to be overall against providing structural mechanics as vertical shaft for elliptic cylindrical structure
The basis of aspect so that inverse vertical shaft of making of the present invention can realize simple for structure, rationally reduction occupation of land width, simplified construction journey
Sequence, reduce the technique effect of construction work amount.
Suspension type of the present invention becomes wall thickness ellipse, and against making, vertical shaft change wall thickness setting method is specially inverse to make vertical shaft in height
The wall thickness in degree direction determines method, and it is characterized by, and comprises the following steps：
1st, the earth lateral pressure of shaft structure side wall is that uniform line load is acted in structure, and earth lateral pressure is according to heterogeneity
The soil body be specially：Sandy soil：Cohesive soil：WhereinFor effective interior friction of the soil body
Angle；
2nd, according to wall thickness t at major axisbWith wall thickness t at short axleaRatio be 0.5≤(tb/taChoose t in)≤1.0bAnd taJust
Initial value, radius is then calculated according to the long and short axle of the borehole wall of each section vertical shaft and establishes plane framework, wherein the calculating of long and short axle
Radius a0、b0Respectively：a0=a+ (ta/2)、b0=b+ (tb/2)；
3rd, the internal force of borehole wall framework is calculated：
Wherein：ka、kbFor bending moment coefficients, it calculates radius a with major axis0, short axle calculate radius b0Ratio relation see below
Table：
| a0/b0 | 1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 |
| ka | 0 | 0.0571 | 0.1329 | 0.2375 | 0.3902 | 0.6299 |
| kb | 0 | -0.0602 | -0.1484 | -0.2829 | -0.4987 | -0.8701 |
In form, for moment of flexure just to represent to bend into well, moment of flexure is negative indication to well outside sweep.
4th, the ratio of reinforcement ρ of tension reinforcement is calculated：A in formulasFor by GB 50010《The Concrete Structure Design is advised
Model》The area of the pulled steel sum being calculated：Wherein：α1Cut for concrete
Face compression chord coefficient, fcFor concrete axial compression strength design load；H be single-unit shaft wall height, h0For concrete section
Effective depth, M by calculating section moment-curvature relationship, i.e. M in step 3aOr Mb, substitute into calculate respectively；fyTension reinforcement
Strength failure criterion；T is to calculate the thickness where section, the t as chosen in advanceaOr tbValue.
5th, judge ρ whether in the range of setting：0.2%≤ρ≤2.0%, if it is, the t currently chosenaOr tbValue
For the wall thickness value of determination, if it is not, then choosing t againbAnd ta, repeat step 3-4, until the ratio of reinforcement ρ of tension reinforcement is being set
In fixed scope, now selected tbAnd taFor when the wall thickness of the prosthomere borehole wall.
Thus, considering inverse to make on the basis of vertical shaft often saves the suspension type force structure of the borehole wall, to carry out the wall thickness of vertical shaft
More careful force analysis, accomplished with becoming the construction of wall thickness above and below vertical shaft, left and right change wall thickness arrangement of reinforcement, inside cross-sectional can be obtained
Inverse for ellipse makees vertical shaft, simple for structure, so, can using vertical shaft that is oval, becoming wall thickness, suspension type reverse construction
Rationally reduce vertical shaft side and take up an area width, simplify operational procedure, reduce construction work amount, at the same can also by curved wall,
Become the method for wall thickness arrangement of reinforcement, cost saving.
The present invention can be specially further：
The ratio for often saving the short axle inside radius a and major axis inside radius b in oval borehole wall section is 0.3≤(a/b)≤1.0.
It is variant in major axis and short-axis direction stress size in view of the elliptic cross-section of the borehole wall, in order to ensure side wall
The stress utilization rate of structure, the major axis radius and minor axis radius of elliptic cross-section are obtained via multiple calculating, test and experiment
Ratio data, under this proportion structure, preferable side wall construction stress utilization rate can be obtained.
The height for often saving the oval borehole wall is 1.0-1.5m.
It is inverse to make vertical shaft from top to bottom, the plural number section borehole wall is provided with a section wall seat, it is located at hoistway wall base soil side tool
There is a projection, it is embedded in vertical shaft base soil.
The inverse height for making vertical shaft is depending on Specific construction situation, if the height of vertical shaft is higher, in order to ensure passing
The stability and reliability of power path by a section borehole wall every certain height, it is necessary to set wall-forming seat, wall seat and other wells
Wall compared to difference raised in being provided with the side that can consolidate in embedded vertical shaft base soil, by the active force of vertical shaft base soil,
Continue to provide the suspension force for carrying load downwards on original actuating system.
The a diameter of 8-12mm of distributing bar of the connection two adjacent sections borehole wall.
Merogenesis work done in the manner of a certain author pours vertical shaft from top to bottom, is connected between each section vertical shaft using 8~Φ of Φ 12 construction muscle, passes through structure
Reinforcing bar is made by all side wall weight transmittings below a certain section borehole wall to this section side wall, is finally transmitted to below the preliminary shaft of inverted L shape
Foundation soil.
In summary, it is by the perpendicular of up to inferior inner section the invention provides a kind of suspension type ellipse against vertical shaft is made
Well is constructed, the borehole wall constructed using the preliminary shaft of the top as inverted L shape, and it is adopted as being suspended on foundation soil between each section vertical shaft
Connected with distributing bar, by distributing bar by all side wall weight transmittings below a certain section borehole wall to this section side wall, finally
The foundation soil being transferred to below the preliminary shaft of inverted L shape；Using distributing bar transmission between the load-bearing of suspension type preliminary shaft, the different segment borehole wall
The way of load, Path of Force Transfer is clear, simple structure；Rationally reduce and take up an area width, while simplify operational procedure, reduce and apply
Work quantities.
Brief description of the drawings
Fig. 1, which is that suspension type of the present invention ellipse is inverse, makees the cross section structure schematic diagram of vertical shaft in the height direction.
Fig. 2 is the inverse lateral cross section structural representation for making vertical shaft of suspension type of the present invention ellipse.
The present invention is described further with reference to embodiment.
Embodiment
Most preferred embodiment：
Referring to the drawings 1, suspension type becomes wall thickness ellipse against vertical shaft is made, and merogenesis work done in the manner of a certain author pours vertical shaft from top to bottom, includes
Plural number saves the oval borehole wall, and it is 1.0-1.5m often to save, and is constructed for assembling reinforcement casting concrete, often saves the major axis internal diameter of the borehole wall
It is identical with short axle internal diameter.The borehole wall in the top constructs for inverted L shape, and the inverted L shape is configured to the inverse preliminary shaft 1 for making vertical shaft, preliminary shaft 1
Standing portion is fixedly installed on foundation soil as the inverse the top borehole wall for making vertical shaft, lateral part then parallel to ground,
L-type structure presses flexural member arrangement of reinforcement；Excavate downwards, constructed section by section section by section afterwards, each section borehole wall 2 passes through a diameter of 8-12mm
The distributing bar side of being connected thereto one save the borehole wall assembling reinforcement on, until it is inverse make vertical shaft connection subterranean tunnel, final section
The borehole wall is ingate.So, from preliminary shaft down, by distributing bar by it is a certain section the borehole wall below all side wall weight transmittings extremely
This section side wall, the foundation soil being finally transmitted to below the preliminary shaft of inverted L shape, therefore, and from this delivery type structure, inverted L shape well
Neck is a kind of suspended structure, carries the weight of each section borehole wall downwards in a manner of transmission.
The inverse lateral cross section that vertical shaft is considered as vertical shaft of ellipse of the present invention constructs for elliptic cross-section, sees accompanying drawing
2, wherein the ratio for often saving the minor axis radius a and major axis radius b in oval borehole wall section is 0.3≤(a/b)≤1.0；And major axis
Locate wall thickness tbWith wall thickness t at short axleaRatio be 0.5≤(tb/ta)≤1.0.Above-mentioned cross-sectional configuration considers the ellipse of the borehole wall
Tee section is variant in major axis and short-axis direction stress size, on Impact direction and different, departing from only from section
The improvement of shape, the stress utilization rate of borehole wall side wall construction is further considered, improved isometrical steady against the structure for making vertical shaft
It is qualitative.
Because the inverse height for making vertical shaft is depending on Specific construction situation, if the height of vertical shaft is higher, in order to true
Protect Path of Force Transfer stability and reliability, it is necessary to the one section borehole wall set into wall-forming seat 3 every certain height, wall seat 3 with
Other boreholes wall compared to difference raised in being provided with the side that can consolidate in embedded vertical shaft base soil, by the work of hoistway wall base soil
Firmly, continue to provide the suspension force for carrying load downwards on original actuating system.Borehole wall cat ladder 4 is installed in vertical shaft.
The elliptic cross-section of borehole wall wall thickness t at major axisbWith wall thickness t at short axleaRatio be 0.5≤(tb/ta)≤1.0,
Simultaneously inverse vertical shaft of making often saves borehole wall wall thickness to adjust the wall thickness of acquisition according to earth lateral pressure along short transverse, and it becomes the whole of wall thickness
It is specific as follows to determine method：
1) soil pressure of shaft structure side wall is calculated using earth pressure at rest, considers earth's surface mobile load, and itemize using load
Coefficient participates in calculating, and calculation formula is with reference to national standard GB 50007《Code for design of building》Perform, earth lateral pressure is equal
Load action is connected up in structure：
To sandy soil：
To cohesive soil：
In formula：For the effective angle of inner friction of the soil body, tested and obtained using triaxial consolidation undrained shear；Consolidated according to staight scissors
Knot quick shear test peak strength c,Index is estimatedEmpirical equation be：
2) the major and minor axis calculating radius for calculating the borehole wall of each section vertical shaft establishes plane framework, the calculating radius of long and short axle
a0、b0Formula is seen below respectively：
Typically by the ratio t of short axle wall thickness and major axis wall thickness during initial calculationa/tb=0.75~0.80 round after tried
Calculate, major axis wall thickness generally takes tb>=330mm, now corresponding short axle wall thickness is ta≥250mm；
3) internal force of borehole wall framework is calculated, calculating can use finite element method or structural mechanics method, using structural mechanics
The reduced mechanical model of method is as follows, ka、kbIt is relevant with the calculating radii ratio of long and short axle for bending moment coefficients, for modal value
Bending moment coefficients be shown in Table 1,
The oval shaft wall bending moment coefficients of table 1
| a0/b0 | 1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 |
| ka | 0 | 0.0571 | 0.1329 | 0.2375 | 0.3902 | 0.6299 |
| kb | 0 | -0.0602 | -0.1484 | -0.2829 | -0.4987 | -0.8701 |
Note：For moment of flexure just to represent to bend into well, moment of flexure is negative indication to well outside sweep.
4) sectional reinforcement is carried out by simple bending primary structure member respectively to controlling sections respectively, the interior outside muscle of the borehole wall is using a circle
Elongated arrangement, it is horizontal to be placed in principal rod on the outside of the borehole wall；For the vertical shaft with waterproof requirement, thickness of protection tier meets water side
Not less than 50mm, while the fracture width of section is checked, general control is not more than 0.2mm.
5) (0.2%≤ρ≤2.0%) in the reasonable scope whether according to the ratio of reinforcement ρ of tension reinforcement, suitably adjustment wall is grown
Wall thickness at short axle, untill the ratio of reinforcement is in the reasonable scope, i.e., 0.2%≤ρ≤2.0%, the ratio of reinforcement press national standard GB
50010《Code for design of concrete structures》Component flexure bearing capacity formula determine：
In formula：
α1(dimensionless) concrete section compression chord coefficient, 1.0 are taken when strength grade of concrete is no more than C50, when
Concrete strength takes 0.94 when being C80, therebetween by linear interpolation；
fc(N/mm2) concrete axial compression strength design load；
H (mm) is single-unit shaft wall height, if taking linear meter(lin.m.) highly to calculate, its value is 1000mm；
h0(mm) it is concrete section effective depth, generally taOr tbSubtract thickness of protection tier；
M (Nmm) by calculating section moment-curvature relationship, i.e. M1Or M2；
fy(N/mm2) tension reinforcement strength failure criterion；
As(mm2) it is by GB 50010《Code for design of concrete structures》The area of the pulled steel sum being calculated；
T (mm) is to calculate the thickness where section, i.e. taOr tb。
Suspension type of the present invention become the inverse construction method for making vertical shaft of wall thickness ellipse into：(1) according to drawing requirement, processing
Oval steel form, between the high 1.0~1.5m of template → (2) field lofting, the major axis and short axle of oval vertical shaft are made, simultaneously
The top layer loosened soil of preliminary shaft scope is removed comprising preliminary shaft bottom plate scope → (3), the excavation soil body → (4) pour preliminary shaft → (5) preliminary shaft and mixed
After solidifying native intensity reaches the 70% of design strength, the first segment well side wall scope soil body → (6) clay model processing, colligation side wall are excavated
Reinforcing bar, connecting structure reinforcing bar → (7) building mould, pour side wall concrete (being poured using water-proof concrete) → (8) side wall coagulation
After soil reaches the 70% of design strength, tear open in the soil body → (10) repetition that steel form → (9) are excavated in the range of next section borehole wall
Abovementioned steps, until well reaches design altitude → (11) according to actual conditions, after well completes construction, pour vertical shaft and permanently push up
Plate, carry out walkway.
The not described part of the present invention is same as the prior art.
Claims (6)
1. suspension type becomes, wall thickness ellipse is inverse to make vertical shaft, it is characterised in that includes plural number and saves the oval borehole wall, is assembling reinforcement
Casting concrete constructs, and often the major axis inside radius a of the elliptic cross-section of the section borehole wall is identical, short axle inside radius b is identical, in the top
The borehole wall be inverted L shape construction preliminary shaft, standing portion is located at the inverse the top borehole wall for making vertical shaft, and lateral part is then parallel to ground
Face, and be fixedly installed on foundation soil, each section borehole wall saves the borehole wall by the distributing bar side of being connected thereto one afterwards
In assembling reinforcement, until inverse make vertical shaft connection subterranean tunnel；The elliptic cross-section of borehole wall wall thickness t at major axisbWith wall at short axle
Thick taRatio be 0.5≤(tb/ta)<1.0, while inverse often section borehole wall wall thickness of the vertical shaft along short transverse of making is according to native side pressure
Power adjusts the wall thickness of acquisition.
2. suspension type becomes the inverse vertical shaft of making of wall thickness ellipse and becomes wall thickness setting method, it is characterised in that comprises the following steps：
(1) earth lateral pressure of shaft structure side wall is uniform line load and acted on shaft structure that earth lateral pressure is according to difference
The soil body of property is specially：Sandy soil：Cohesive soil：WhereinFor the effective interior of the soil body
Angle of friction；
(2) the major axis inside radius for often saving the elliptic cross-section of the borehole wall is a, and short axle inside radius is b, and the elliptic cross-section of the borehole wall is in length
Wall thickness is t at axlebIt is t with wall thickness at short axlea, choose tbAnd taInitial value, selection range is according to wall thickness t at major axisbWith short axle
Locate wall thickness taRatio：0.5≤(tb/ta)<1.0, radius is then calculated according to the long and short axle of the borehole wall of each section vertical shaft and established
Plane framework, wherein the calculating radius a of long and short axle0、b0Respectively：a0=a+ (ta/2)、b0=b+ (tb/2)；
(3) internal force of borehole wall framework is calculated：
Wherein：ka、kbFor bending moment coefficients, it calculates radius a with major axis0, short axle calculate radius b0Ratio relation see the table below：
In form, for moment of flexure just to represent to bend into well, moment of flexure is negative indication to well outside sweep；
(4) ratio of reinforcement ρ of tension reinforcement is calculated：A in formulasFor by GB 50010《Code for design of concrete structures》Meter
Obtained area of the pulled steel sum：Wherein：α1It is pressurized for concrete section
Stress coefficient, fcFor concrete axial compression strength design load；H be single-unit shaft wall height, h0It is effectively high for concrete section
Degree, M by calculating section moment-curvature relationship, i.e. M in step 3aOr Mb, substitute into calculate respectively；fyThe intensity of tension reinforcement is set
Evaluation；T is to calculate the thickness where section, the t as chosen in advanceaOr tbValue,
(5) judge ρ whether in the range of setting：0.2%≤ρ≤2.0%, if it is, the t currently chosenaOr tbIt is worth to be true
Fixed wall thickness value, if it is not, then choosing t againbAnd ta, repeat step (3)-(4), until the ratio of reinforcement ρ of tension reinforcement is being set
In fixed scope, now selected tbAnd taFor when the wall thickness of the prosthomere borehole wall.
3. suspension type according to claim 1 becomes, wall thickness ellipse is inverse to make vertical shaft, it is characterised in that often saves the oval borehole wall
The minor axis radius a and major axis radius b in section ratio are 0.3≤(a/b)≤1.0.
4. suspension type according to claim 1 becomes, wall thickness ellipse is inverse to make vertical shaft, it is characterised in that it is inverse make vertical shaft by upper and
Under, the plural number section borehole wall is provided with a section wall seat, it is located at, and hoistway wall base soil side is raised with one, and it is embedded in vertical shaft base soil
In.
5. suspension type according to claim 1 becomes, wall thickness ellipse is inverse to make vertical shaft, it is characterised in that often saves the oval borehole wall
Height be 1.0-1.5m.
6. suspension type according to claim 1 becomes, wall thickness ellipse is inverse to make vertical shaft, it is characterised in that the connection adjacent two
Save a diameter of 8-12mm of distributing bar of the borehole wall.
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| CN117150817B (en) * | 2023-10-26 | 2024-02-02 | 湖南大学 | Combined door type anti-floating frame design method based on soil arch effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030012185A (en) * | 2001-07-30 | 2003-02-12 | 나이가이데구니가 가부시끼가이샤 | A method of constructing an underground parking lot by sinking wall-like piles by their weights |
| CN2561930Y (en) * | 2001-12-04 | 2003-07-23 | 北京中煤矿山工程有限公司 | Steel plate concrete composite well wall with multi-layer steel plate laminated structure |
| CN104499560A (en) * | 2014-12-22 | 2015-04-08 | 洛阳城市建设勘察设计院有限公司 | Combined rainwater seepage well and construction method |
| CN204457778U (en) * | 2015-01-14 | 2015-07-08 | 国家电网公司 | Being hampered for push pipe jacking, the ellipse of removing obstacles is inverse makes vertical shaft |
-
2015
- 2015-12-24 CN CN201510987993.0A patent/CN105569073B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030012185A (en) * | 2001-07-30 | 2003-02-12 | 나이가이데구니가 가부시끼가이샤 | A method of constructing an underground parking lot by sinking wall-like piles by their weights |
| CN2561930Y (en) * | 2001-12-04 | 2003-07-23 | 北京中煤矿山工程有限公司 | Steel plate concrete composite well wall with multi-layer steel plate laminated structure |
| CN104499560A (en) * | 2014-12-22 | 2015-04-08 | 洛阳城市建设勘察设计院有限公司 | Combined rainwater seepage well and construction method |
| CN204457778U (en) * | 2015-01-14 | 2015-07-08 | 国家电网公司 | Being hampered for push pipe jacking, the ellipse of removing obstacles is inverse makes vertical shaft |
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| CN105569073A (en) | 2016-05-11 |
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Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee after: China Electric Power Construction Group Fujian electric survey and Design Institute Co., Ltd. Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee before: Fujian Electric Power Survey and Design Institute |