CN103628496B - The construction method of egg shaped digestion cell and its bottom vertical prestressing bar - Google Patents
The construction method of egg shaped digestion cell and its bottom vertical prestressing bar Download PDFInfo
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- CN103628496B CN103628496B CN201310613621.2A CN201310613621A CN103628496B CN 103628496 B CN103628496 B CN 103628496B CN 201310613621 A CN201310613621 A CN 201310613621A CN 103628496 B CN103628496 B CN 103628496B
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Abstract
The invention provides the construction method of egg shaped digestion cell and its bottom vertical prestressing bar, is related to waste water or technical field of sludge treatment.For egg shaped digestion cell of the existing bottom without ruggedized construction, it is built on soft soil foundation and the problem of quality such as cracking, depression endanger occurs.Egg shaped digestion cell includes the digester housing one to locate below ground level；Digester housing two on ground；The bottom of digester housing one is provided with cushion cap, and some vertical prestressing bars are provided with digester housing one；The bottom of cushion cap is taper type and has a circular cushion cap bottom surface, and vertical prestressing bar is arranged radially in digester housing one, and its top is fixed in the side wall of cushion cap, and cushion cap bottom surface is fixed in bottom.Construction method：First, calculate the cross-sectional area of vertical prestressing bar needed for digester housing one and determine the quantity of presstressed reinforcing steel；2nd, vertical prestressing bar is arranged radially in digester housing one, and its both ends is separately fixed in cushion cap bottom surface and side wall.
Description
Technical field
The present invention relates to waste water or technical field of sludge treatment, more particularly to a kind of bottom is provided with the ovum of vertical prestressing bar
Shape digester, and the construction method of the vertical prestressing bar.
Background technology
Egg shaped digestion cell is a kind of large-scale water treatment building, has hyperboloid Rotation Shell Structure, is particularly suitable for holding
Amount is more than 10000m3Large-scale digester, have pond body stress performance is good, sludge agitation fully, the protrusion such as high insulating effect it is excellent
Point.
Referring to Fig. 1, Chinese invention patent application number 03141718.3, entitled a kind of oval digestion tank and its construction party
In the technical scheme of method, the oval digestion tank that locates below ground level（Hereafter it is referred to as egg shaped digestion cell 11）Housing connects with ring beam 12
Connect, the diaphram wall of the lower section of ring beam 12 surrounds the bottom of a pan morph concrete loose tool 13, and diaphram wall is as semi-underground type egg shaped digestion
The basis in pond 11 and foundation pit enclosure, the load of the egg shaped digestion cell 11 transmitted by ring beam 12 is accepted, has been improved integrally-built
Anti-seismic performance, reduce the dosage of the lower concrete of egg shaped digestion cell 11, but the egg shaped digestion cell of the technical scheme applies to
Structures on rock foundation, because rock foundation bearing capacity is higher, presstressed reinforcing steel need not be set also can in plain concrete loose tool 13
Undertake the load of egg shaped digestion cell 11.
However, the domestic rivers and lakes in China are numerous, the distribution of weak soil is extremely extensive, as built on soft soil foundation it is above-mentioned
Egg shaped digestion cell, because soft soil foundation bearing capacity is poor, if do not taken special reinforcement measure, egg shaped digestion cell occurs out
Split, the harm of the quality such as depression.And the description for the technical scheme do not reinforced in the prior art on egg shaped digestion cell bottom, can
See, a kind of construction method of egg shaped digestion cell and its bottom ruggedized construction suitable on soft soil foundation of design is extremely necessary
's.
The content of the invention
For egg shaped digestion cell of the existing bottom without ruggedized construction, it is built on soft soil foundation and cracking, depression occurs
The problem of being endangered etc. quality, it is an object of the invention to provide a kind of egg shaped digestion cell and its construction party of bottom vertical prestressing bar
Method, it can be built on soft soil foundation and structure is safe and stable.
The technical solution adopted for the present invention to solve the technical problems is：The digester housing one to locate below ground level；Position
Digester housing two more than ground；The bottom of the digester housing one is provided with cushion cap, and the cushion cap is provided with least one
Circumferential step；Some vertical prestressing bars are provided with the digester housing one；Wherein, the bottom of the cushion cap be taper type and
With a circular cushion cap bottom surface, the vertical prestressing bar is arranged radially in the digester housing one, described vertical
The top of presstressed reinforcing steel is fixed in the side wall on the close ground of the cushion cap, and the bottom of the vertical prestressing bar is fixed
In the cushion cap bottom surface.
Further, longitudinal axis of the cushion cap bottom surface along the egg shaped digestion cell is followed successively by the first anchorage zone from inside to outside
With the second anchorage zone, first anchorage zone and the second anchorage zone are the concentric circles that the center of circle is located on the longitudinal axis, described perpendicular
To presstressed reinforcing steel be even number root and adjacent two vertical prestressing bars are one group, then each group has odd term vertically pre-
Stress rib and even item vertical prestressing bar, the bottom of the odd term vertical prestressing bar are fixed on first anchorage zone
On circumference, the bottom of the even item vertical prestressing bar is fixed on the circumference of second anchorage zone, or odd term erects
It is fixed on to the bottom of presstressed reinforcing steel on the circumference of second anchorage zone, the bottom of even item vertical prestressing bar is fixed on institute
On the circumference for stating the first anchorage zone.
Preferably, the core ruggedized construction with the axis coaxial, the core are additionally provided with first anchorage zone
The cylindrical frame that ruggedized construction is made up of some vertical reinforcements and the reinforcing bar cuff being sheathed on the vertical reinforcement, and pour
In being formed in concrete.
The outer wall of the odd term vertical prestressing bar and the core ruggedized construction side is tangent and is fixed on described the
On the circumference of one anchorage zone, the outer wall of the even item presstressed reinforcing steel and the core ruggedized construction opposite side is tangent and is fixed on
On the circumference of second anchorage zone, or the odd term vertical prestressing bar and the outer wall of the core ruggedized construction side
It is tangent and be fixed on the circumference of second anchorage zone, the even item presstressed reinforcing steel and the core ruggedized construction opposite side
Outer wall it is tangent and be fixed on the circumference of first anchorage zone.
The odd term vertical prestressing bar and the even item vertical prestressing bar are arranged in a crossed manner, and in digester housing
Symmetrical network structure is formed in one.
The radius of the core ruggedized construction is more than 400mm.
The radius of first anchorage zone is more than 900mm, edge of second anchorage zone away from the cushion cap bottom surface away from
It is 150mm~300mm from D.
In addition, present invention also offers a kind of construction method of egg shaped digestion cell bottom vertical prestressing bar, including it is as follows
Step：
Step 1：The cross-sectional area of required vertical prestressing bar in the digester housing one is calculated, and according to described transversal
The span of area determines the quantity of the vertical prestressing bar；
Step 2：The vertical prestressing bar is arranged radially in the digester housing one, it is described vertical in advance
The both ends of power muscle are separately fixed in the side wall of the cushion cap bottom surface and the cushion cap.
Further, in the step 1, the cross-sectional area of the vertical prestressing bar in the digester housing one is
Calculated by equation below：
S≥（G1+G2）/（μ×σcon×cosθ）
Wherein, G1 be the egg shaped digestion cell cylindrical liquid weight, unit N；
G2 is the weight of frustum shell immediately below the columnar liquid, unit N；
μ is the loss coefficient of the vertical prestressing bar；
σ con be the vertical prestressing bar control stress for prestressing, unit N/mm2；
θ is the angle of the vertical prestressing bar and the egg shaped digestion cell longitudinal axis.
Further, the step 2 comprises the following steps：
Step 201：On the cushion cap bottom surface is marked off successively from inside to outside along the longitudinal axis of the egg shaped digestion cell
One anchorage zone and the second anchorage zone, first anchorage zone and the second anchorage zone are located at concentric on the longitudinal axis for the center of circle
Circle；
Step 202：Two adjacent in vertical prestressing bar described in even number root, which are divided into one group, each group, has one
Root odd term vertical prestressing bar and an even item vertical prestressing bar；
Step 203：The bottom of the odd term vertical prestressing bar is fixed on the circumference of first anchorage zone, described
The bottom of even item vertical prestressing bar is fixed on the circumference of second anchorage zone, or the odd term vertical prestressing
The bottom of muscle is fixed on the circumference of second anchorage zone, and the bottom of the even item vertical prestressing bar is fixed on described
On the circumference of one anchorage zone.
Further, the step 2 comprises the following steps：
Step 211：Being divided successively from inside to outside along the longitudinal axis of the egg shaped digestion cell on the cushion cap bottom surface has core
Heart ruggedized construction, the first anchorage zone and the second anchorage zone, the core ruggedized construction are the cylinder knot with the axis coaxial
Structure, first anchorage zone and the second anchorage zone are the concentric circles that the center of circle is located on the longitudinal axis；
Step 212：Two adjacent in vertical prestressing bar described in even number root, which are divided into one group, each group, has one
Root odd term vertical prestressing bar and an even item vertical prestressing bar；
Step 213：The outer wall of the bottom of the odd term vertical prestressing bar and the core ruggedized construction side is tangent
Afterwards, continue to extend to the cushion cap bottom surface and be fixed on the circumference of first anchorage zone, the even item vertical prestressing
After the outer wall of muscle and core stabilization zone opposite side is tangent, continues to extend to the cushion cap bottom surface and be fixed on second anchor
On Gu Qu circumference, or the outer wall of the bottom of the odd term vertical prestressing bar and core stabilization zone side is tangent
Afterwards, continue to extend to the cushion cap bottom surface and be fixed on the circumference of second anchorage zone, the even item vertical prestressing
After the outer wall of muscle and core stabilization zone opposite side is tangent, continues to extend to the cushion cap bottom surface and be fixed on first anchor
On Gu Qu circumference.
Each group of the odd term vertical prestressing bar and the even item vertical prestressing bar are arranged in a crossed manner, described perpendicular
To presstressed reinforcing steel symmetrical network structure is formed in the digester housing one.
The core ruggedized construction is arranged on the cushion cap bottom surface, the core ruggedized construction by some vertical reinforcements with
The reinforcing bar cuff composition cylindrical frame being sheathed on the vertical reinforcement, and pour in being formed in concrete.
The radius of the core ruggedized construction is more than 400mm.
The radius of first anchorage zone is more than 900mm, edge of second anchorage zone away from the cushion cap bottom surface away from
It is 150mm~300mm from D.
Effect of the invention is that：
First, the present invention is provided with vertical prestressing bar in the digester housing one that egg shaped digestion cell is connected with cushion cap, erects
It is connected respectively with cushion cap bottom surface and cushion cap side wall to the both ends of deformed bar.In load action, vertical prestressing bar can
Tension caused by counteracting or reduction load, avoids the quality such as the cracking, depression of egg shaped digestion cell from endangering, with realizing weak soil
The design and construction of prestressed reinforced concrete egg shaped digestion cell on base.
2nd, cushion cap side wall is evenly spaced fixed on egg shaped digestion cell of the invention, the top of vertical prestressing bar, its bottom
End stretch into cushion cap bottom surface and be not pointing at bottom center, but with the cylindrical structure outer surface of core stabilization zone it is tangent after, continue
Extend to two with the certain intervals anchorage zone of bottom surface and fixation, i.e. vertical prestressing bar are around core stabilization zone and are in
Certain radius r1 is arranged, and this subregion cloth muscle method can avoid drawing because of digester bottom of pond concrete stress raisers
The destruction to concrete component of hair.
Brief description of the drawings
Fig. 1 is the structural representation of existing egg shaped digestion cell；
Fig. 2 is the structural representation of the egg shaped digestion cell of the present invention；
Fig. 3 is the force analysis figure of egg shaped digestion cell；
Fig. 4 is the force analysis figure of egg shaped digestion cell bottom；
Fig. 5 is the floor plan of vertical prestressing bar in egg shaped digestion cell.
Embodiment
Below in conjunction with the drawings and specific embodiments to egg shaped digestion cell proposed by the present invention and its bottom vertical prestressing bar
Construction method be described in further detail.According to following explanation and claims, advantages and features of the invention will be more clear
Chu.It should be noted that accompanying drawing uses using very simplified form and non-accurately ratio, only to conveniently, lucidly
Aid in illustrating the purpose of the embodiment of the present invention.
Embodiment one：Illustrate the egg shaped digestion cell 100 of the present invention with reference to Fig. 2 to Fig. 5, what it included locating below ground level disappears
Change pond housing 1；Digester housing 2 102 more than ground；The bottom of digester housing 1 is provided with cushion cap 110,
And cushion cap 110 is provided with two ring-shaped steps 111, and some vertical prestressing bars 140 are provided with digester housing 1.Cushion cap 110
Bottom taper type and to there is a circular cushion cap bottom surface 112, vertical prestressing bar 140 is arranged radially in digester housing
In one 101, and one end of vertical prestressing bar 140 is fixed on cushion cap bottom surface 112, and the other end of vertical prestressing bar 140 is consolidated
Due in the side wall on the close ground of cushion cap 110.The vertical prestressing bar set in the concrete of digester housing 1
140, in load（Egg shaped digestion cell and its internal liquid）During effect, it can offset or reduce tension caused by load, avoid
The quality such as egg shaped digestion cell 100 is cracking, depression endanger.
Further, as shown in Figure 2 and Figure 5, on cushion cap bottom surface 112 along the longitudinal axis ax of egg shaped digestion cell 100 by introversion
The first anchorage zone 114 and the second anchorage zone 115 are followed successively by outside, the first anchorage zone 114 and the second anchorage zone 115 are respectively positioned on for the center of circle
Concentric circles on longitudinal axis ax.Because egg shaped digestion cell 100 is symmetrical structure, the total quantity of vertical prestressing bar 140 should be even
Two adjacent vertical prestressing bars 140 are such as classified as one group by number, then have one in each group of vertical prestressing bar 140 very
A several vertical prestressing bar 140a and even item vertical prestressing bar 140b.The top spacing of vertical prestressing bar 140 is equal
It is fixed on evenly in the side wall of cushion cap 110, and each group odd term vertical prestressing bar 140a bottom is evenly spaced fixed on
On the circumference of first anchorage zone 114, each group even item vertical prestressing bar 140b bottom is evenly spaced fixed on the second anchor
Gu on the circumference in area 115, symmetrical structure is so arranged in order into.Or conversely, odd term vertical prestressing bar 140a bottom
It is fixed on the circumference of the second anchorage zone 115, even item vertical prestressing bar 140b bottom is fixed on the first anchorage zone 114
On circumference.The structure of this symmetrical and subregion arrangement of vertical prestressing bar 140 can be avoided in the bottom of egg shaped digestion cell 100
The phenomenon of stress concentration is produced in concrete, and then reduces stress and concentrates the risk for causing component damage.
Embodiment two：Illustrate the egg shaped digestion cell 100 of the present invention with reference to Fig. 2 to Fig. 5, unlike embodiment one, make
For more preferably technical scheme, the core ruggedized construction 113 coaxial with longitudinal axis ax is additionally provided with the first anchorage zone 114, core adds
Fixing structure 113 is arranged on cushion cap bottom surface 112, and it forms cylinder frame by some vertical reinforcements and the reinforcing bar cuff being arranged thereon
Frame, and pour in being formed in concrete.Odd term vertical prestressing bar 140a and the outer wall of the side of core ruggedized construction 113 are tangent
Afterwards, continue to extend to cushion cap bottom surface 112 and be fixed on the circumference of the first anchorage zone 114, and even item vertical prestressing bar
After the outer wall of 140b and the opposite side of core ruggedized construction 113 is tangent, continues to extend to cushion cap bottom surface 112 and be fixed on the second anchoring
On the circumference in area 115.Vertical prestressing bar 140 and the outer wall of core ruggedized construction 113 are tangent, and core ruggedized construction 113 can be held
The stretching force of part vertical prestressing bar 140 is carried on a shoulder pole, the side wall of cushion cap 110 and the stress burden of bottom surface is alleviated, is advantageous to digester
The stabilization of structure.
Odd term vertical prestressing bar 140a and even item vertical prestressing bar 140b be it is arranged in a crossed manner, therefore, vertically
Presstressed reinforcing steel 140 forms symmetrical network structure in digester housing 1, increases the concrete of digester housing 1
Bearing capacity.Similarly, if odd term vertical prestressing bar 140a and the outer wall of core ruggedized construction 113 are tangent rear fixed
In on the circumference of the second anchorage zone 115, even item vertical prestressing bar 140b and the outer wall of core ruggedized construction 113 are tangent rear solid
Due on the circumference of the first anchorage zone 114, the technical scheme of the present embodiment can be achieved.
In above-mentioned technical proposal, the radius r1 of core ruggedized construction 113 is more than 400mm, the radius r2 of the first anchorage zone 114
More than 900mm, i.e. radius big 500mm of the radius of the first anchorage zone 114 compared with core ruggedized construction 113 so that vertical prestressing
The anchorage of muscle 140 can be uniformly arranged on the circumference of the first anchorage zone 114, without excessively concentrating.Second anchorage zone 115 away from
The distance D at the edge of cushion cap bottom surface 112 is 150mm~300mm, can be dispersed in another part vertical prestressing bar 140
On its circumference, again bottom of pond edge concrete will not be made to be damaged because local pressure is excessive.
Embodiment three：Illustrate the construction method of the egg shaped digestion cell bottom presstressed reinforcing steel of the present invention, bag with reference to Fig. 2 to Fig. 5
Include following steps：
Step 1：The cross-sectional area of vertical prestressing bar 140 needed for digester housing 1 is calculated, and according to cross section
Long-pending span determines the quantity of vertical prestressing bar 140；
Step 2：Vertical prestressing bar 140 is arranged radially in digester housing 1, vertical prestressing bar
140 both ends are separately fixed in the side wall of cushion cap bottom surface 112 and cushion cap 110.
Illustrate further combined with Fig. 4 and Fig. 5 in above-mentioned steps 1, the vertical prestressing bar 140 in digester housing 1
Cross-sectional area computational methods：
Under conditions of the pond top gas pressure of egg shaped digestion cell 100 is disregarded, with the concrete-pool-wall of egg shaped digestion cell 100（That is Fig. 4
Shown in A-A faces）For stress point, N is that the stretching force provided after the deduction of vertical prestressing bar 140 loses is made a concerted effort；P is concrete sump
The tension of wall, G1 are the cylindrical liquid 200 of egg shaped digestion cell 100（It is shown in dotted line frame in Fig. 3）Weight, G2 is digester
The weight positioned at the lower section frustum shell 103 of columnar liquid 200 of housing 1.Because concrete component is under tension state
Easily there is crack, in the present embodiment, to make concrete-pool-wall A-A faces be not subject to tension P, then should meet：σ ck- σ pc≤0, should
Formula is recorded in《Code for design of concrete structures 2010》In 7.1 crack-control check calculations.
Wherein, σ ck are that load standard combines, under accurate permanent combination, the concrete normal stress at crack resisting calculation edge, unit
N/mm2；
After σ pc is deduct whole losss of prestress, in the compressive pre-stress of crack resisting calculation edge concrete, unit N/mm2。
Therefore deduce that in the present embodiment：P-N≤0；
And P=（G1+G2）/cosθ；
N=S×μ×σcon；
Wherein：P be concrete-pool-wall tension, unit N；
N is that the pulling force provided after the deduction of vertical prestressing bar 140 loses is made a concerted effort, unit N；
G1 be the cylindrical liquid 200 of egg shaped digestion cell 100 weight, unit N；
G2 be the lower section frustum shell 103 of columnar liquid 200 weight, unit N；
The cross-sectional area of S vertical prestressing bars 140 for needed for, unit mm2；
μ is the loss coefficient of vertical prestressing bar 140；
σ con be vertical prestressing bar 140 control stress for prestressing, unit N/mm2,（Control stress for prestressing refers to prestressing force
Reinforcing bar is in the maximum stress value reached during tensioning, that is, tensioning equipment, as indicated by the dynamometer on jack
The stress value that total stretching force divided by deformed bar cross-sectional area are drawn.）
In summary, further draw：S≥（G1+G2）/（μ×σcon×cosθ）, it is required vertical prestressing bar
The span of 140 cross-sectional area.Then, according to selected by the above-mentioned cross-sectional area of vertical prestressing bar 140 and construction
The model and specification of vertical prestressing bar 140 determines the quantity of vertical prestressing bar 140.
How vertical prestressing bar 140 is reasonably arranged in digester housing 1, above-mentioned steps 2 are specifically deployed
Details are as follows：
Step 201：On cushion cap bottom surface 112 is marked off successively from inside to outside along the longitudinal axis ax of egg shaped digestion cell 100
One anchorage zone 114 and the second anchorage zone 115, and the first anchorage zone 114 and the second anchorage zone 115 are that the center of circle is located on longitudinal axis ax
Concentric circles, be embedded with equally distributed anchorage on the circumference of the first anchorage zone 114 and the second anchorage zone 115；
Step 202：The top of even number vertical prestressing bar 140 is evenly spaced fixed in the side wall of cushion cap 110,
And two adjacent vertical prestressing bars 140 are divided into a group, then respectively there is an odd term vertical prestressing in each group
A muscle 140a and even item vertical prestressing bar 140b；
Step 203：Odd term vertical prestressing bar 140a bottom is fixed on the anchorage of the first anchorage zone 114, it is even
Several vertical prestressing bar 140b bottom is fixed on the anchorage of the second anchorage zone 115, or odd term vertical prestressing bar
140a bottom is fixed on the anchorage of the second anchorage zone 115, and even item vertical prestressing bar 140b bottom is fixed on first
On the anchorage of anchorage zone 114.
Preferably, the radius r2 of the first anchorage zone 114 is more than 900mm, the second anchorage zone 115 is away from the side of cushion cap bottom surface 112
The distance D of edge is 150mm~300mm.
Example IV：Illustrate the construction method of the egg shaped digestion cell bottom presstressed reinforcing steel of the present invention with reference to Fig. 3 to Fig. 5, with
Unlike embodiment three：
The more superior arrangement and method for construction of above-mentioned steps 2 is as follows：
Step 211：On cushion cap bottom surface 112 core is marked off successively from inside to outside along the longitudinal axis ax of egg shaped digestion cell 100
Heart stabilization zone 113, the first anchorage zone 114 and the second anchorage zone 115, and core stabilization zone 113, the first anchorage zone 114 and second
Anchorage zone 115 is that the center of circle is located at concentric circles on longitudinal axis ax, is buried on the circumference of the first anchorage zone 114 and the second anchorage zone 115
Provided with equally distributed anchorage；
Step 212：The top of even number vertical prestressing bar 140 is evenly spaced fixed in the side wall of cushion cap 110,
And two adjacent vertical prestressing bars 140 are divided into a group, then there is an odd term vertical prestressing bar in every group
140a and even item vertical prestressing bar 140b；
Step 213：The outer wall of odd term vertical prestressing bar 140a bottom and the side of core ruggedized construction 113 is tangent
Afterwards, continue to extend to cushion cap bottom surface 112 and be fixed on the anchorage of the circumference of the first anchorage zone 114, even item vertical prestressing bar
After the outer wall of 140b and the opposite side of core ruggedized construction 113 is tangent, continues to extend to cushion cap bottom surface 112 and be fixed on the second anchoring
On the anchorage of the circumference of area 115, or on the contrary, by odd term vertical prestressing bar 140a and even item vertical prestressing bar 140b bottoms
The link position at end is exchanged, and can also realize technical scheme.
More preferably, it is individually fixed in the X-shape of vertical prestressing bar 140 of the first anchorage zone 114 and the second anchorage zone 115
Into symmetrical network structure.
Core ruggedized construction 113 is arranged on cushion cap bottom surface 112, and it is by some vertical muscle with being arranged lateral tie thereon
Cylindrical frame is formed, and pours and is formed in concrete.The radius r1 of core ruggedized construction 113 is more than 400mm.
The present invention be directed to the egg shaped digestion cell of Design of Soft Soil, can meet arrangement of pile foundation in the egg shaped digestion cell cushion cap
In the case of, the concrete structure form of cushion cap is changed into taper from traditional bulk, overall saving reinforcing bar and concrete
Dosage is about 5%.
Vertical prestressing bar, vertical prestressing steel are provided with the digester housing one that egg shaped digestion cell is connected with cushion cap
The both ends of muscle are connected with cushion cap bottom surface and cushion cap side wall respectively.In load action, vertical prestressing bar can offset or reduce
Tension caused by load, the quality such as the cracking, depression of egg shaped digestion cell are avoided to endanger.Realize prestressing force on soft soil foundation
The design and construction of armored concrete egg shaped digestion cell.
Particular, it is important that cushion cap side wall is evenly spaced fixed on the top of vertical prestressing bar, its bottom, which is stretched into, holds
Platform bottom surface and be not pointing at bottom center, but with the outer surface of core ruggedized construction it is tangent after, continue to extend to the tool of bottom surface
Having two anchorage zones of certain intervals and fixation, i.e. vertical prestressing bar is carried out around core stabilization zone and in certain radius r1
Arrangement, this subregion cloth muscle method can avoid the concrete component triggered by digester bottom of pond concrete stress raisers
Destruction.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (13)
1. egg shaped digestion cell, it is characterised in that including：
The digester housing one to locate below ground level；
Digester housing two more than ground；
The bottom of the digester housing one is provided with cushion cap, and the cushion cap is provided with least one circumferential step；
Some vertical prestressing bars are provided with the digester housing one；
Wherein, the bottom of the cushion cap is taper type and has a circular cushion cap bottom surface, and the vertical prestressing bar is radial
It is arranged in the digester housing one, the close ground of the cushion cap is fixed on the top of the vertical prestressing bar
In side wall, the cushion cap bottom surface is fixed in the bottom of the vertical prestressing bar；
Longitudinal axis of the cushion cap bottom surface along the egg shaped digestion cell is followed successively by the first anchorage zone and the second anchorage zone from inside to outside,
First anchorage zone and the second anchorage zone are the concentric circles that the center of circle is located on the longitudinal axis, and the vertical prestressing bar is even
Two several and adjacent vertical prestressing bars are one group, then each group has odd term vertical prestressing bar and even item
Vertical prestressing bar, the bottom of the odd term vertical prestressing bar are fixed on the circumference of first anchorage zone, the idol
The bottom of several vertical prestressing bars is fixed on the circumference of second anchorage zone, or the bottom of odd term vertical prestressing bar
End is fixed on the circumference of second anchorage zone, and the bottom of even item vertical prestressing bar is fixed on first anchorage zone
On circumference.
2. egg shaped digestion cell according to claim 1, it is characterised in that：It is additionally provided with first anchorage zone and is indulged with described
The core ruggedized construction of axis coaxle, the core ruggedized construction are by some vertical reinforcements and are sheathed on the vertical reinforcement
Reinforcing bar cuff composition cylindrical frame, and pour in being formed in concrete.
3. egg shaped digestion cell according to claim 2, it is characterised in that：The odd term vertical prestressing bar and the core
The outer wall of heart ruggedized construction side is tangent and is fixed on the circumference of first anchorage zone, the even item presstressed reinforcing steel and institute
It is tangent and be fixed on the circumference of second anchorage zone to state the outer wall of core ruggedized construction opposite side, or the odd term erects
Outer wall to presstressed reinforcing steel and the core ruggedized construction side is tangent and is fixed on the circumference of second anchorage zone, described
The outer wall of even item presstressed reinforcing steel and the core ruggedized construction opposite side is tangent and is fixed on the circumference of first anchorage zone
On.
4. according to the egg shaped digestion cell described in any one of claims 1 to 3, it is characterised in that：The odd term vertical prestressing
Muscle and the even item vertical prestressing bar are arranged in a crossed manner, and symmetrical network structure is formed in digester housing one.
5. the egg shaped digestion cell according to Claims 2 or 3, it is characterised in that：The radius of the core ruggedized construction is more than
400mm。
6. according to the egg shaped digestion cell described in any one of claims 1 to 3, it is characterised in that：The radius of first anchorage zone
More than 900mm, the distance D at edge of second anchorage zone away from the cushion cap bottom surface is 150mm~300mm.
7. a kind of construction method of the egg shaped digestion cell bottom vertical prestressing bar described in any one of claim 1 to 6, including such as
Lower step：
Step 1：The cross-sectional area of required vertical prestressing bar in the digester housing one is calculated, and according to the cross-sectional area
Span determine the quantity of the vertical prestressing bar, the horizontal stroke of the vertical prestressing bar in the digester housing one
Sectional area is calculated by equation below：
S≥(G1+G2)/(μ×σcon×cosθ)
Wherein, G1 be the egg shaped digestion cell cylindrical liquid weight, unit N；
G2 is the weight of frustum shell immediately below the columnar liquid, unit N；
μ is the loss coefficient of the vertical prestressing bar；
σ con be the vertical prestressing bar control stress for prestressing, unit N/mm2；
θ is the angle of the vertical prestressing bar and the egg shaped digestion cell longitudinal axis；
Step 2：The vertical prestressing bar is arranged radially in the digester housing one, the vertical prestressing bar
Both ends be separately fixed in the side wall of the cushion cap bottom surface and the cushion cap.
8. construction method according to claim 7, it is characterised in that the step 2 comprises the following steps：
Step 201：On the cushion cap bottom surface the first anchor is marked off successively from inside to outside along the longitudinal axis of the egg shaped digestion cell
Gu Qu and the second anchorage zone, first anchorage zone and the second anchorage zone are the concentric circles that the center of circle is located on the longitudinal axis；
Step 202：Two adjacent in vertical prestressing bar described in even number root, which are divided into one group, each group, has one very
Several vertical prestressing bars and an even item vertical prestressing bar；
Step 203：The bottom of the odd term vertical prestressing bar is fixed on the circumference of first anchorage zone, the even number
The bottom of item vertical prestressing bar is fixed on the circumference of second anchorage zone, or the odd term vertical prestressing bar
Bottom is fixed on the circumference of second anchorage zone, and the bottom of the even item vertical prestressing bar is fixed on first anchor
On Gu Qu circumference.
9. construction method according to claim 7, it is characterised in that the step 2 comprises the following steps：
Step 211：Being divided successively from inside to outside along the longitudinal axis of the egg shaped digestion cell on the cushion cap bottom surface has core to add
Fixing structure, the first anchorage zone and the second anchorage zone, the core ruggedized construction are cylindrical structure with the axis coaxial, institute
State the concentric circles that the first anchorage zone and the second anchorage zone are located at for the center of circle on the longitudinal axis；
Step 212：Two adjacent in vertical prestressing bar described in even number root, which are divided into one group, each group, has one very
Several vertical prestressing bars and an even item vertical prestressing bar；
Step 213：After the outer wall of the bottom of the odd term vertical prestressing bar and the core ruggedized construction side is tangent, after
Renew and extend the cushion cap bottom surface and be fixed on the circumference of first anchorage zone, the even item vertical prestressing bar and institute
State core stabilization zone opposite side outer wall it is tangent after, continue to extend to the cushion cap bottom surface and be fixed on second anchorage zone
On circumference, or the bottom of the odd term vertical prestressing bar and core stabilization zone side outer wall it is tangent after, continue
Extend to the cushion cap bottom surface and be fixed on the circumference of second anchorage zone, the even item vertical prestressing bar with it is described
After the outer wall of core stabilization zone opposite side is tangent, continues to extend to the cushion cap bottom surface and be fixed on the circle of first anchorage zone
Zhou Shang.
10. construction method according to claim 8 or claim 9, it is characterised in that：Each group of the odd term vertical prestressing
Muscle and the even item vertical prestressing bar are arranged in a crossed manner, vertical prestressing bar formation pair in the digester housing one
The network structure of title.
11. construction method according to claim 9, it is characterised in that：The core ruggedized construction is arranged at the cushion cap
On bottom surface, the core ruggedized construction forms cylinder by some vertical reinforcements and the reinforcing bar cuff being sheathed on the vertical reinforcement
Framework, and pour in being formed in concrete.
12. construction method according to claim 11, it is characterised in that：The radius of the core ruggedized construction is more than
400mm。
13. construction method according to claim 8 or claim 9, it is characterised in that：The radius of first anchorage zone is more than
900mm, the distance D at edge of second anchorage zone away from the cushion cap bottom surface is 150mm~300mm.
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| CN103628496B true CN103628496B (en) | 2018-03-02 |
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| CN105275213A (en) * | 2014-06-30 | 2016-01-27 | 中国一冶集团有限公司 | An eggshell-shaped unbounded prestress angle-changing tensioning construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200652A (en) * | 2000-01-17 | 2001-07-27 | Ps Corp | Prestressing method for egg-shaped concrete vessel structure |
| CN1480595A (en) * | 2003-07-21 | 2004-03-10 | 上海市政工程设计研究院 | Egg-shaped digestion tank and its construction method |
| CN2748571Y (en) * | 2004-11-04 | 2005-12-28 | 中国建筑第八工程局第二建筑公司 | Umbrella-shaped support for egg-shaped digestion tank formwork |
| CN202297250U (en) * | 2011-10-13 | 2012-07-04 | 中国市政工程华北设计研究总院 | Prestress steel structured ovate digestion pool |
| CN203834500U (en) * | 2013-11-27 | 2014-09-17 | 上海市政工程设计研究总院（集团）有限公司 | Oval digestion tank |
-
2013
- 2013-11-27 CN CN201310613621.2A patent/CN103628496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200652A (en) * | 2000-01-17 | 2001-07-27 | Ps Corp | Prestressing method for egg-shaped concrete vessel structure |
| CN1480595A (en) * | 2003-07-21 | 2004-03-10 | 上海市政工程设计研究院 | Egg-shaped digestion tank and its construction method |
| CN2748571Y (en) * | 2004-11-04 | 2005-12-28 | 中国建筑第八工程局第二建筑公司 | Umbrella-shaped support for egg-shaped digestion tank formwork |
| CN202297250U (en) * | 2011-10-13 | 2012-07-04 | 中国市政工程华北设计研究总院 | Prestress steel structured ovate digestion pool |
| CN203834500U (en) * | 2013-11-27 | 2014-09-17 | 上海市政工程设计研究总院（集团）有限公司 | Oval digestion tank |
Non-Patent Citations (1)
| Title |
|---|
| 超大型蛋形消化池结构群施工监测研究;杨玉泉等;《城市道桥与防洪》;20110130(第1期);期刊正文第74-75页第1节 * |
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