CN105625787A - Pre-stressed steel structure and concrete combined squat silo structure and construction method thereof - Google Patents
Pre-stressed steel structure and concrete combined squat silo structure and construction method thereof Download PDFInfo
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Abstract
The invention provides a pre-stressed steel structure and concrete combined squat silo structure and a construction method of the pre-stressed steel structure and concrete combined squat silo structure. The pre-stressed steel structure and concrete combined squat silo structure comprises a cylindrical concrete wall body, wherein the outer side of the concrete wall body is provided with a steel pipe concrete structure support; the steel pipe concrete structure support comprises a circle of vertical supports which are arranged at intervals along the outer surface of the concrete wall body, a plurality of annular steel beam rings which are vertically arranged on the outer surface of the concrete wall body at intervals from top to bottom, and ring-direction pre-stressed bundles which are arranged between two vertically adjacent transverse steel beam supports. According to the pre-stressed steel structure and concrete combined squat silo structure and the construction method of the pre-stressed steel structure and concrete combined squat silo structure, provided by the invention, multiple ring-direction pre-stresses are used by a truss type steel pipe concrete structure column within a high range, ring-direction inner pressure is generated by the pre-stressed bundles, an outward pushing force of storage materials in a silo body is balanced, and the bending moment generated at the bottom part of the column by the pushing force is reduced substantially, so that the material utilization amount and the construction cost of a foundational system of the whole storage structure are reduced substantially.
Description
Technical field
The present invention relates to a kind of storage structures and construction method thereof, particularly to storage structures and the construction method thereof of a kind of prestressed steel structure and Combined concrete.
Background technology
At present, storage structures, the particularly structure of major diameter, jumbo silo system, use concrete or prestressed concrete to build all in a large number. Under normal circumstances, the silo structure of concrete system in order to overcome in storehouse prose style free from parallelism thrust and thus thrust form moment of flexure at the bottom of post, it is necessary to the huge buttress in cross section is set in periphery or directly adopts the concrete wall of super thick. But both structures all have following disadvantage: when adopting huge concrete section, in cross section, only the structural material in the interior outside in two Moment directions can compare the effect of fully playing, working stress is higher, and the material working stress of cross section mid portion is very low, it is impossible to give full play to the effect of material. Secondly as the restriction of concrete minimum steel ratio, need to configure a large amount of reinforcing bar in huge concrete section, and the reinforcing work stress of cross section mid portion configuration is equally very low, it is impossible to give full play to the material advantage of steel high tensile. It addition, concrete silo structure is bearing in storehouse in prose style free from parallelism thrust load process, each buttress is fought separately substantially, particularly when storing the preloading of thing local in storehouse, each buttress contacts difference each other, and the rigidity that other buttresses provide for preloading district is little, and stress overall performance is poor. In storehouse, thrust forms huge bending moment and is directly delivered to basis at post basal cross section place simultaneously, causes cross section, basis also quite huge. In concrete silo structure, the concrete wall stress span between buttress is big, and body of wall stress form is one-way slabs stress, and plate mid span moment is big, and this results in body of wall needs very thick cross section, and the big cost of quantity of reinforcement is high. Even if arranging concrete ring beam, also due to ring beam is in stretch bending stress, it is necessary to huge wall section and magnanimity arrangement of reinforcement could meet stress and designing requirement. Furthermore, concrete silo structure all uses huge xoncrete structure cross section, and construction template in construction process quantities is huge, long construction period, complex procedures. It is also faced with ultra-large volume concrete simultaneously and builds problem and Overlong Concrete Structure temperature stress problem.
In addition, concrete itself is fragile material, tensile strength is minimum, the structure of concrete or prestressed concrete storage system is stored in storehouse under the thrust that discrete material is outside and is extremely easily ftractureed, after cracking, the endurance quality of concrete system just declines rapidly, therefore to ensure the safety of storage structures, structure needs to use huge cross section, configure a lot of reinforcing bar simultaneously, design and user demand could be met. Now the most of material in storage structures system is all in low stress duty, can not give full play to the cheap and pressure performance of concrete material, can not give full play to the high tensile performance of steel. The construction cost thereby resulting in silo system remains high.
Summary of the invention
It is an object of the invention to provide the silo structure of a kind of prestressed steel structure and Combined concrete and construction method, the area of section solving existing structure is big, reinforcing bar and concrete amount is many, material property can not be fully utilized, structural integrity is poor and difficulty of construction is big, speed of application slowly, the technical problem that construction cost is high.
For realizing above-mentioned technical purpose, the present invention adopts the following technical scheme that.
A kind of silo structure of prestressed steel structure and Combined concrete, including cylindric concrete wall, it is characterized in that: the outside of described concrete wall is provided with concrete filled steel tube and supports, described concrete filled steel tube supports and includes along the spaced apart circle vertical supporting of concrete walls external surface, and the ring-like girder steel circle in some roads being from top to bottom vertically disposed on concrete walls external surface.
Described vertical supporting includes medial shaft right cylinder limb, outside batter post limb and web member medial shaft right cylinder limb and outside batter post limb being fixedly connected with, and wherein medial shaft right cylinder limb is attached on the outer surface of concrete wall.
Described ring-like girder steel circle is to be supported by the horizontal girder steel being in same level to be propped up column connected node be formed by connecting by horizontal girder steel support and inboard, upright, described horizontal girder steel rigidity of support connects or is hingedly connected between adjacent inboard vertical support, and horizontal girder steel support sticker is on the outer surface of concrete wall.
Described concrete filled steel tube supports and also includes the ring prestressed steel bundle being arranged between the horizontal girder steel support of neighbouring two, and described ring prestressed steel bundle is arranged on medial shaft right cylinder limb.
Preferably, described horizontal girder steel is supported for a string formula prestressed steel girder, and including arc girder steel, longitudinal strut and pre-stressing tendon, wherein arc girder steel is attached on the outer surface of concrete wall, and the fixing end of longitudinal strut is welded to connect at the middle part of arc girder steel; Described pre-stressing tendon is symmetrically connected between longitudinal strut and arc girder steel, and one end of pre-stressing tendon is connected with the free end of longitudinal strut, the other end is connected with arc girder steel.
Preferably, described web member includes horizontal web member and diagonal web member; Described horizontal web member is each provided at the position concordant with the height of ring-like girder steel circle with the node of diagonal web member.
Preferably, described medial shaft right cylinder limb and outside batter post limb are empty steel pipe or concrete filled steel tube rod member.
Preferably, described medial shaft right cylinder limb is square column limb or circular columns limb, and outside batter post limb is square column limb or circular columns limb.
Preferably, described web member is shaped steel or empty steel pipe or concrete filled steel tube rod member.
Preferably, described ring prestressed steel bundle uses cord clip or chute device to be connected with medial shaft right cylinder limb in vertical supporting position.
The construction method of the silo structure of a kind of prestressed steel structure and Combined concrete, it is characterised in that comprise the steps:
Step one: according under prose style free from parallelism pressure effect in storehouse, principle that the annular concrete vertical mid span moment of wall section between arbitrary neighborhood two ring-like girder steel circle is equal or concrete wall is divided into some annular concrete wall sections along short transverse according to storage technological requirement.
Step 2: according to the vertical span of annular concrete wall section after segmentation and stressing conditions, it is determined that the thickness of concrete wall.
According to overall Force Calculation result, it is determined that vertical supporting sectional dimension, medial shaft right cylinder limb sectional dimension, outside batter post limb sectional dimension, web member sectional dimension and each annular prestressed area of beam size, make vertical supporting.
The number of vertical supporting is comprehensively determined according to process conditions and structure macroeconomic.
Step 3: construction vertical supporting.
Step 4: be respectively provided with horizontal girder steel at concrete wall split position place and concrete wall top and support; The two ends of every horizontal girder steel support are rigidly connected or are hingedly connected on adjacent two medial shaft right cylinder limbs, and the horizontal girder steel in same level supports and surrounds a ring-like girder steel circle.
Step 5: support at adjacent two horizontal girder steels, between circumferential reinforcement bundle is set, and circumferential reinforcement bundle is connected with medial shaft right cylinder limb at position cord clip or the chute device of vertical supporting, described prestressing tendon is clamp to slide completely in cord clip position, or can slide.
Step 6: at the position of design construction concrete wall.
Step 7: concrete wall. After having constructed, to being arranged on medial shaft right cylinder limb. On circumferential reinforcement Shu Jinhang prestressed stretch-draw, make ring prestressed steel bundle.
Preferably, described concrete wall is the concrete wall of first prefabricated rear installation, and the prefabricated burst of body of wall adopts vertical burst, namely each concrete walls section between bipassage ring section steel beam circle and the annular concrete wall Duan Jun annularly concrete walls section circumference between ring-like girder steel circle and basis ring beam are divided equally into multistage wall element, four limits of wall element are supported on adjacent two vertical supportings respectively and adjacent two horizontal girder steels support, and the lower limb of lowermost wall element is supported on the ring beam of basis.
Preferably, described horizontal girder steel is supported for a string formula prestressed steel girder, after concrete wall completes, first form pre-stressing tendon to being arranged on a string formula prestressed steel girder tendon and carrying out stretch-draw, then to the circumferential reinforcement Shu Jinhang prestressed stretch-draw on inboard, upright post limb.
Compared with prior art the invention have the characteristics that and beneficial effect.
1, huge heavy in section buttress is changed into the steel tube concrete structure column of truss-like by the present invention, the high tensile performance of steel can have been given full play to, cheap and the pressure performance of concrete material can be made full use of again, when meeting rigidity and bending resistance, the area of section of the structure not only reduced and shared space, also reduce concrete consumption.
2, the present invention uses many to ring orientation prestress within the scope of truss type steel tube concrete structure column height, ring inward pressure is produced by prestressing tendon, the thrust that material is outside is stored in balance bunker body, significantly reduce this thrust in the moment of flexure produced at the bottom of post, thus material usage and the construction cost of whole storage structures foundational system is greatly lowered.
3, the present invention adopts the spaced apart ring-like girder steel of multiple tracks and ring prestressed steel bundle to support, counterfort intercolumniation body of wall high for structure Central Plains BENTONG is divided into multistage from top to bottom, the force modes making counterfort intercolumniation body of wall changes, script supported at two edges become the two-way slab of supported along four sides and bidirectional stress in the one-way slabs of buttress and primarily transverse stress. In addition, this structure also significantly reduces the work span of counterfort intercolumniation body of wall, improves stress performance, thus significantly reducing thickness of wall body, saves material usage.
4, the prestressing tendon in the present invention is by as a whole for the contact of all truss type steel tube concrete columns, make all truss type steel tube concrete columns when bearing the thrust that in warehouse, storage material is outside, an overall work can be become, mutual helping, common stress, avoid each buttress local storage or independent stress when storing of buying securities with all one's capital in storehouse in system, the material work efficiency of structure is thus greatly improved, and saves structural material consumption.
5, the truss type steel tube concrete column that the present invention adopts can be prefabricated in the factory and is processed into sky steel pipe truss, and transport can directly installation in position, then casting concrete in steel pipe column behind job site. The lighter in weight of this process hollow steel tube truss, transport and install all need not special super large facility, and steel pipe inner concrete be cast in steel pipe column in place after carry out, it is not necessary to the installation carrying out any template is built, and constructs extremely simple.
6, in the present invention, ring-like girder steel spaced apart with prestressing tendon supports and all adopts prefabrication, field erected method, and prefabrication process is Tong Bu with field basic construction and truss type steel tube concrete column, can significantly save the duration.
7, after the present invention adopts body of wall prefabrication solutions, the prefabricated of body of wall can be synchronously performed with foundation construction, the construction of truss type steel tube concrete column and the construction of prestress steel ring beam, walls concrete is built and curing time cycle compression is in the construction period of other structures, significantly save whole construction period.
8, in the present invention, concrete walls body thickness between truss type steel tube concrete column and weight are only small, prefabrication or in-situ precast can be adopted equally, then the method that burst is installed, thus by aerial template support large-area in building course and concrete build and maintenance, the concrete slab being completely converted on ground level is built, thus difficulty of construction is greatly lowered, improves and build speed of application, save construction cost.
Accompanying drawing explanation
Fig. 1 is the floor map of the present invention.
Fig. 2 is the schematic diagram of the concrete filled steel tube support of the present invention.
Fig. 3 is the part isometric schematic diagram of the present invention.
Accompanying drawing labelling: 1-vertical supporting, 2-horizontal girder steel support, 3-concrete wall, 4-ring prestressed steel bundle, 5-pre-stressing tendon, 6-medial shaft right cylinder limb, 7-longitudinal direction strut, 8.1-horizontal web member, 8.2-diagonal web member, 9-outside batter post limb, 10-arc girder steel.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, the silo structure of this prestressed steel structure and Combined concrete, including cylindric concrete wall 3, the outside of described concrete wall 3 is provided with concrete filled steel tube and supports, described concrete filled steel tube supports and includes along the spaced apart circle vertical supporting 1 of concrete wall 3 outer surface, and the ring-like girder steel circle in some roads being from top to bottom vertically disposed on concrete wall 3 outer surface.
Described vertical supporting 1 includes medial shaft right cylinder limb 6, outside batter post limb 9 and web member medial shaft right cylinder limb and outside batter post limb being fixedly connected with, and wherein medial shaft right cylinder limb 6 is attached on the outer surface of concrete wall 3.
Described ring-like girder steel circle is to be connected node by horizontal girder steel support 2 with inboard, upright pillar 6 by the horizontal girder steel support 2 being in same level to be formed by connecting, described horizontal girder steel supports 2 and is rigidly attached between adjacent inboard vertical support 6, and horizontal girder steel supports 2 and is attached on the outer surface of concrete wall 3.
In other embodiments, horizontal girder steel support 2 can also be hingedly connected between adjacent two inboard, upright pillars 6.
In the present embodiment, described the top ring-like girder steel circle together is arranged on the top of concrete wall 3.
Described steel structure support also includes the ring prestressed steel bundle 4 being arranged between the horizontal girder steel support 2 of neighbouring two, and described ring prestressed steel bundle 4 uses cord clip or chute device to be connected with medial shaft right cylinder limb 6 in vertical supporting 1 position.
In the present embodiment, described horizontal girder steel supports 2 for a string formula prestressed steel girder, including arc girder steel 10, longitudinal strut 7 and pre-stressing tendon 5, wherein arc girder steel 10 is attached on the outer surface of concrete wall 3, and the fixing end of longitudinal strut 7 is welded to connect at the middle part of arc girder steel 10; Described pre-stressing tendon 5 is symmetrically connected between longitudinal strut 7 and arc girder steel 10, and one end of pre-stressing tendon 5 is connected with the free end of longitudinal strut 7, the other end is connected with arc girder steel 10.
In the present embodiment, it is i shaped cross section that described horizontal girder steel supports the cross section of 2, and the connection that horizontal girder steel supports between 2 and the columnae medialis limb 6 of truss type steel tube concrete column is to be rigidly connected or be articulated and connected.
In the present embodiment, described web member includes horizontal web member 8.1 and diagonal web member 8.2; Described horizontal web member 8.1 is each provided at the position concordant with the height of ring-like girder steel circle with the node of diagonal web member 8.2.
In the present embodiment, medial shaft right cylinder limb 6 adopts Concrete-Filled Square Steel Tube, and outside batter post limb 9 adopts concrete filled steel tube, and web member adopts round steel pipe.
In the present embodiment, the annular concrete vertical mid span moment of wall section between described arbitrary neighborhood two ring-like girder steel circle is equal, and is also equal to the annular concrete vertical mid span moment of wall section between a bottom ring-like girder steel circle and basis ring beam.
This prestressed steel structure and the construction method of the silo structure of Combined concrete, comprise the steps.
Step one: by concrete wall high for 20m along being highly divided into 5 annular concrete wall sections, segmentation foundation is to make concrete wall under the effect of prose style free from parallelism pressure in storehouse, each annular concrete wall section mid span moment is essentially identical, thus when adopting same thickness of slab, wall reinforcement can be made essentially identical, to reach to facilitate prefabricated and assembling construction purpose.
Step 2: according to the vertical span of annular concrete wall section after segmentation and stressing conditions, it is determined that concrete wall 3 thickness is 300mm.
The number of vertical supporting 1 is comprehensively determined according to process conditions and structure macroeconomic.
According to overall Force Calculation result, it is determined that the sectional dimension of vertical supporting 1, medial shaft right cylinder limb 6 sectional dimension, outside batter post limb 9 sectional dimension, web member sectional dimension and each annular prestressed bundle 4 sectional dimension, make vertical supporting 1; The sectional dimension of vertical supporting 1 is according to after overall calculation, and steel and concrete material stress index are satisfied by country's design standard-required and determine.
Step 3: construction vertical supporting 1, medial shaft right cylinder limb 6 adopts Concrete-Filled Square Steel Tube, and outside batter post limb 9 adopts concrete filled steel tube, and web member adopts round steel pipe; And bottom post limb kernel of section and outside batter post limb 9, post limb kernel of section spacing takes 5m bottom medial shaft right cylinder limb 6; The top cross-section center distance of the top cross-section center of medial shaft right cylinder limb 6 and outside batter post limb 9 takes 2m; The node of web member aligns along the split position of height with concrete wall 3, according to above-mentioned layout, is welded to connect described rod member.
In other embodiments, medial shaft right cylinder limb 6 can adopt concrete filled steel tube.
In other embodiments, when concrete wall is shorter or in storehouse, pressure is less, medial shaft right cylinder limb 6 and outside batter post limb 9 also only can adopt concrete filled steel tube in stress relatively large part, and other stress smaller part positions directly adopt sky steel pipe (namely in steel pipe not pouring concrete).
Step 4: the number comprehensively determining truss type steel tube concrete column 1 according to process conditions and structure macroeconomic is 36; And concrete wall 3 outer surface in design is circumferentially evenly arranged.
Step 5: being respectively provided with a string formula prestressed steel girder at body of wall split position and wall top, string formula prestressed steel girder is opened in totally 5 roads; The two ends of every string formula prestressed steel girder are welded to connect on adjacent two medial shaft right cylinder limbs 6, a string formula prestressed steel girder in same level surrounds a ring-like girder steel circle, the cross section opening string formula prestressed steel girder can adopt i shaped cross section to may be used without box-type section or other compound section patterns, and the prestressing tendon of a string formula prestressed steel girder is horizontally disposed with, to strengthen a string formula prestressed steel girder bending rigidity in horizontal plane, pressure in the warehouse that opposing is transmitted by concrete wall 3.
Certainly in other embodiments, the two ends of every horizontal girder steel support 2 can also be hingedly connected on adjacent two medial shaft right cylinder limbs 6.
In other embodiments, horizontal girder steel support 2 can adopt without prestressed steel girder.
Step 6: open in each road between string formula prestressed steel girder, namely the medial shaft right cylinder limb 6 span centre position between web member node arranges ring prestressed steel bundle, ring prestressed steel bundle arranges 4 roads altogether, and circumferential reinforcement bundle uses cord clip or chute device to be connected with medial shaft right cylinder limb 6 in vertical supporting 1 position, and described prestressing tendon is clamp to slide completely in cord clip position.
Prestressing tendon can also be able to slip in cord clip position in other embodiments.
The area of section of circumferential reinforcement bundle and prestressing force size are according to after structure overall calculation, and the material stress index of circumferential reinforcement bundle is satisfied by country's design standard-required and determines.
Step 7: at the position of design construction concrete wall 3, described concrete wall 3 is the concrete wall of first prefabricated rear installation, and the prefabricated burst of concrete wall adopts vertical burst, namely each annular concrete wall section between bipassage ring section steel beam circle and the annular concrete wall Duan Jun annularly concrete walls section circumference between bipassage ring section steel beam circle and basis ring beam are divided equally into multistage wall element, four limits of wall element are supported on adjacent two vertical supportings 1 respectively and adjacent two horizontal girder steels support on 2, the lower limb of lowermost wall element is supported on the ring beam of basis. prefabricated complete after directly lift installation, form integral wall.
Concrete wall 3 may be used without cast-in-place form in other embodiments.
Step 8: after concrete wall 3 completes, first carries out stretch-draw to being arranged on a string formula prestressed steel girder tendon, then to the circumferential reinforcement Shu Jinhang prestressed stretch-draw on inboard, upright post limb 6.
Claims (10)
1. the silo structure of a prestressed steel structure and Combined concrete, including cylindric concrete wall (3), it is characterized in that: the outside of described concrete wall (3) is provided with concrete filled steel tube and supports, described concrete filled steel tube supports and includes along spaced apart circle vertical supporting (1) of concrete wall (3) outer surface, and the ring-like girder steel circle in some roads being from top to bottom vertically disposed on concrete wall (3) outer surface;
Described vertical supporting (1) includes medial shaft right cylinder limb (6), outside batter post limb (9) and web member medial shaft right cylinder limb and outside batter post limb being fixedly connected with, and wherein medial shaft right cylinder limb (6) is attached on the outer surface of concrete wall (3);
Described ring-like girder steel circle is to be connected node by horizontal girder steel support (2) with inboard, upright pillar (6) by horizontal girder steel support (2) being in same level to be formed by connecting, described horizontal girder steel supports (2) and is rigidly connected or is hingedly connected between adjacent two inboard, upright pillars (6), and horizontal girder steel supports (2) and is attached on the outer surface of concrete wall (3);
Described concrete filled steel tube supports and also includes the ring prestressed steel bundle (4) being arranged between horizontal girder steel support (2) of neighbouring two, and described ring prestressed steel bundle (4) is arranged on medial shaft right cylinder limb (6).
2. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterized in that: described horizontal girder steel supports (2) for a string formula prestressed steel girder, include arc girder steel (10), longitudinal strut (7) and pre-stressing tendon (5), described arc girder steel (10) is attached on the outer surface of concrete wall (3), the fixing end of described longitudinal strut (7) is welded to connect the middle part in arc girder steel (10), described pre-stressing tendon (5) is symmetrically connected between longitudinal strut (7) and arc girder steel (10), wherein one end of pre-stressing tendon (5) is connected with the free end of longitudinal strut (7), the other end is connected with arc girder steel (10).
3. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterised in that: described web member includes horizontal web member (8.1) and diagonal web member (8.2); Described horizontal web member (8.1) is each provided at the position concordant with the height of ring-like girder steel circle with the node of diagonal web member (8.2).
4. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterised in that: described medial shaft right cylinder limb (6) and outside batter post limb (9) they are empty steel pipe or concrete filled steel tube rod member.
5. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterised in that: described medial shaft right cylinder limb (6) is square column limb or circular columns limb, and outside batter post limb (9) is square column limb or circular columns limb.
6. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterised in that: described web member is shaped steel or empty steel pipe or concrete filled steel tube rod member.
7. the silo structure of prestressed steel structure according to claim 1 and Combined concrete, it is characterised in that: described ring prestressed steel bundle (4) uses cord clip or chute device to be connected with medial shaft right cylinder limb (6) in vertical supporting (1) position.
8. the construction method of prestressed steel structure described in Arbitrary Term and the silo structure of Combined concrete in a claim 1-7, it is characterised in that comprise the steps:
Step one: according under prose style free from parallelism pressure effect in storehouse, principle that the annular concrete vertical mid span moment of wall section between arbitrary neighborhood two ring-like girder steel circle is equal or concrete wall is divided into some annular concrete wall sections along short transverse according to storage technological requirement;
Step 2: according to the vertical span of annular concrete wall section after segmentation and stressing conditions, it is determined that the thickness of concrete wall (3);
The number of vertical supporting (1) is comprehensively determined according to process conditions and structure macroeconomic;
According to overall Force Calculation result, determine vertical supporting (1) global sections size, medial shaft right cylinder limb (6) sectional dimension, outside batter post limb (9) sectional dimension, web member sectional dimension and each annular prestressed bundle (4) sectional dimension, make vertical supporting (1);
Step 3: construction vertical supporting (1);
Step 4: be respectively provided with horizontal girder steel at concrete wall (3) split position place and concrete wall (3) top and support (2); The two ends of every horizontal girder steel support (2) are rigidly connected or are hingedly connected on adjacent two medial shafts right cylinder limb (6), and the horizontal girder steel in same level supports (2) and surrounds a ring-like girder steel circle;
Step 5: support at adjacent two horizontal girder steels and between (2), circumferential reinforcement bundle is set, and circumferential reinforcement bundle uses cord clip or chute device to be connected with medial shaft right cylinder limb (6) in the position of vertical supporting (1), circumferential reinforcement bundle is clamp to slide completely in cord clip position, or can slide;
Step 6: in the position of design construction concrete wall (3);
Step 7: after concrete wall (3) has been constructed, to the circumferential reinforcement Shu Jinhang prestressed stretch-draw being arranged on medial shaft right cylinder limb (6), makes ring prestressed steel bundle (4).
9. the construction method of the silo structure of prestressed steel structure according to claim 8 and Combined concrete, it is characterized in that: in described step 6, concrete wall (3) is the concrete wall of first prefabricated rear installation, and the prefabricated burst of body of wall adopts vertical burst, namely each concrete walls section between bipassage ring section steel beam circle and the annular concrete wall Duan Jun annularly concrete walls section circumference between ring-like girder steel circle and basis ring beam are divided equally into multistage wall element, four limits of wall element are supported on adjacent two vertical supportings (1) respectively and adjacent two horizontal girder steels support on (2), the lower limb of lowermost wall element is supported on the ring beam of basis.
10. the construction method of the silo structure of prestressed steel structure according to claim 8 and Combined concrete, it is characterized in that: described horizontal girder steel supports (2) for a string formula prestressed steel girder, after concrete wall (3) in step 7 completes, first form pre-stressing tendon (5) to being arranged on a string formula prestressed steel girder tendon and carrying out stretch-draw, then to the circumferential reinforcement Shu Jinhang prestressed stretch-draw in inboard, upright post limb (6).
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| CN106088780A (en) * | 2016-06-29 | 2016-11-09 | 中国航空规划设计研究总院有限公司 | The cast-in-place concrete pylon of pre-made void reinforcement bar truss mould plate and construction method thereof |
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| CN110145154A (en) * | 2019-06-03 | 2019-08-20 | 四川电力设计咨询有限责任公司 | Rectangle steel silo and its construction method with beam-string structure system |
| CN111042530A (en) * | 2019-12-18 | 2020-04-21 | 中建科工集团有限公司 | Suspension cable tensioning construction method |
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| CN106065665B (en) * | 2016-07-25 | 2018-05-01 | 大唐环境产业集团股份有限公司 | A kind of super-span storage canopy and its method of construction |
| CN109610895A (en) * | 2018-12-12 | 2019-04-12 | 同济大学 | A kind of steel structure cooling tower |
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| CN110145154A (en) * | 2019-06-03 | 2019-08-20 | 四川电力设计咨询有限责任公司 | Rectangle steel silo and its construction method with beam-string structure system |
| CN112324215A (en) * | 2019-12-04 | 2021-02-05 | 安阳工学院 | Ultra-large space truss structure supporting spiral undercut steel plate bin and construction method thereof |
| CN111042530A (en) * | 2019-12-18 | 2020-04-21 | 中建科工集团有限公司 | Suspension cable tensioning construction method |
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