CN101832028B - Construction method of thin shell with thin-shell structure - Google Patents
Construction method of thin shell with thin-shell structure Download PDFInfo
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- CN101832028B CN101832028B CN 201010132759 CN201010132759A CN101832028B CN 101832028 B CN101832028 B CN 101832028B CN 201010132759 CN201010132759 CN 201010132759 CN 201010132759 A CN201010132759 A CN 201010132759A CN 101832028 B CN101832028 B CN 101832028B
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Abstract
The invention discloses a construction method of a thin shell with a thin-shell structure and relates to a reinforced concrete construction method of a thin shell with a thin-shell structure. Aiming to reduce the workload of producing, mounting and stripping a framework, the construction method comprises the following construction steps of: (1) hanging and paving a combined body of a concrete gridded attached carrier for deposing and pouring and reinforcing ribs on a prestress cable net, binding the attached carrier, the reinforcing ribs and the cable net by using the reinforcing ribs with a concrete bearing structure; and carrying out spraying and concreting to generate a form shell of the formwork for pouring concrete; and (2) carrying out spraying concreting on the generated form shellto finish the construction of the thin shell with the thin shell structure. The construction method is simple, can save a large amount of labor force and physical resources and has favorable comprehensive technical and economic performances.
Description
Technical field
The present invention relates to a kind of construction techniques, be specially a kind of reinforced concrete construction method that is applicable to the thin shell with thin-shell structure body.
Background technology
Thin shell structures in the building operations is exactly the thin wall construction of curved surface, material mostly adopts steel concrete, the shell face thickness can be done very thinly, be generally 1/600 of radius of curvature, housing can make full use of the strength of materials, can and go along with sb. to guard him two kinds of functions with load-bearing again simultaneously permeates, build up the bigger flat slab capital construction in span space, also can utilize cutting and combination in the actual engineering to space curved surface, form peculiarly shaped novelty and can adapt to the building of various design models, the thin shell structures of Sydney Opera House for example, its moulding as smart as a new pin.The thin shell structures job practices comprises that the mould bases support body is set up, external mold fixing, structure reinforcing bars colligation in place, internal mold install, concreting, stripping and surface maintenance, by the mould bases support body that different modules is fixing respectively, and piece together integral body, binding structure reinforcing bar and internal mold are made on the glass fiber reinforced plastic external mold, realize the moulding of housing then by fluid concrete.
In the thin shell structures work progress, the curvature of each piece template is all different except that the circle shell at present, and setting up with making processing, the desired difficulty of installation and the precision of template of template typing support body is higher, the work progress complexity, and artificial requirement is bigger.
Summary of the invention
Technical problem to be solved by this invention provides a kind of job practices of thin shell with thin-shell structure, and this method can reduce the work of template construct installation and stripping.
The technical solution used in the present invention is: a kind of job practices of thin shell with thin-shell structure comprises following construction sequence:
1) hanging the shop deposition on the net at prestressed cable builds with the latticed assembly that adheres to carrier and reinforcing rib of concrete, to after adhering to carrier, reinforcing rib and rope net and carrying out colligation, the concreting of spraying generates as the putamina of concreting with template with the concrete bearing structure reinforcing bars.
2) on the putamina that step 1) generates, carry out sprayed mortar and build the construction of finishing thin shell with thin-shell structure.
Thin shell structures of the present invention is latticedly to adhere to carrier shop to hang over rope online concrete; fixedly make it have gunning concrete after the bigger bearing strength with load-carrying members again; the latticed carrier that adheres to can be netted braids such as geotextiles; the net of die-cut expanded material such as strainer net sheet or other synthetic materials; reinforcing rib is a metal braid; it is the job practices that is coated with the placing pea gravel concreten with Spray Gun Of The Pressure that sprayed mortar is built; be usually used in placing tunnel liner; wall; thin wall construction or the lining of other structures and the toppings of steel work such as ceiling; spraying concreting is that with the difference that sprayed mortar is built the pressure of spray gun outlet is different; and having added the jet compressed air that produces atomizing, is that those skilled in the art realize easily.Spraying concreting can adopt single or double to build.
In order further to strengthen concrete adhesive power, the latticed carrier that adheres to described in the step 1) is porose braid or die-cut expanded material, aperture≤2mm.
In order to make the combination physical efficiency that higher adhesion property and intensity be arranged, the assembly that adheres to carrier and reinforcing rib in the step (1) is to be formed by geotextiles or strainer net sheet and the colligation of support iron wire mesh grid sheet.
In order to prevent that nozzle from stopping up, the concrete or the use neat slurry that gather materials as medium sand 0-5mm are used in spray-up trickling, slippage, slump in the spraying concreting in the step (1); The concrete aggregate that step (2) sprayed mortar uses in building is medium sand 0 one 5mm, coarse sand 4mm one 6mm, and stone 6mm one 8mm, three's volume accounts for 30%, 20%, 50% successively.
In order to prevent that spray-up from coming off and ftracture, sprayed deposit pouring construction water/binder ratio is 0.5-0.6, and the ratio of cement and medium sand is 1: 1, and the initial setting time before not adding accelerating admixture is 50min.Concrete mix intensity; C25 or C30.During sprayed deposit concreting mix, adding length in the concrete is that 10mm short fiber, addition are 3% of cement, stir 10～15 minutes stand-by, the concrete that has once stirred is built at 20 minutes internal sprayings and is finished.
In order to reduce spraying, avoid its vibrations or fragmentation, the pressure≤1kg/cm of spray gun outlet during step (1) spraying concreting to latticed impact of adhering to carrier
2
The job practices of the thin shell with thin-shell structure that the present invention proposes compare with conventional job practices exempted that the template shaping rack is set up, processing and fabricating, the amalgamation of glass fiber reinforced plastic internal mold exterior sheathing, install and fix and the moulding of concreting housing after whole work of stripping, job practices is simple, and the concreting material, to build THICKNESS CONTROL simple.This " job practices of no template suspension cable (extension) thin shell with thin-shell structure " that forms on rope web frame basis can be saved lot of manpower and material resources, has the good comprehensive technical and economic performance.
Description of drawings
Fig. 1 is the schematic diagram of one-tenth module zoarium of the present invention.
Among the figure, 1-prestressed cable net; 2-angle steel horizontal support; 3-iron wire mesh grid sheet; The 4-geotextiles; The 5-structure reinforcing bars.
The specific embodiment
1, raw-material control
(1) mixing water: in the engineering many with drinking water as mixing water, and pH value is less than the water that 5 acid water and sulfur-bearing hydrochlorate amount surpass the water yield 1%, contains the water that influential cement normally condenses with the hazardous substances of hardening and all must not use.
(2) cement: for guarantee sprayed deposit build with the setting time of sprayed mortar and with the intermiscibility of accelerating admixture, used cement should have intensity height, impermeability and good endurance, sprayed deposit Cheng Mo builds and should preferentially select label 52.5,52.5R for use, high strength portland cement, be used to do sprayed mortar and should preferentially select label 42.5 or 52.5, above high strength portland cement for use.All cement should be done the intensity identification experiment before using, and one batch cement should once use up, and the cement of different manufacturers can not mix use.
(3) aggregate: the intensity of sprayed mortar is except the intensity that depends on aggregate, the adhesion strength that also depends on cement paste and aggregate, aggregate size is more little within the specific limits, the even more concrete strength that distributes is high more, maximum aggregate size ground reduces the bond area that has not only increased aggregate and cement paste, and pernicious gas reduces around the aggregate, the moisture film attenuate, uniform mixing easily, thus concrete intensity improved.All should water before using for sand or stone rinsing dustiness well should be less than 2%.
(4) Admixture: in order to reduce water supply volume, to reduce rebound degree and dust rate, sprayed deposit is built, sprayed mortar must use the Admixture high-early.Should adopt and conform to quality requirements and the accelerating admixture very little human body harmfulness, before the admixture accelerating admixture, should do the intermiscibility experiment and the experiment of cement paste rapid hardening effect of accelerating admixture and water, note the experiment of accelerating admixture effect, initial setting time should be greater than 3min, and final setting time should not keep the accelerating admixture drying not become damp and rotten greater than 10min, the purpose of adding accelerating admixture in sprayed mortar is that sprayed mortar is met design requirement, and promotes early strong.General accelerating admixture the optimum mix amount is about the 8%-12% of cement weight, too much volume is unfavorable on the contrary to sprayed mortar, though this is because accelerating admixture has quickened the rate of set of sprayed mortar, but also stoped the even diffusion of water in cement, part water is wrapped in the cement that condenses, sclerosis back forms pore, another part cement thereby can not get sufficient moisture and carry out hydration reaction and drying shrinkage, thus crack.So admixture must the other accelerating admixture of reasonable volume be mixed the people should be even.
2, sprayed deposit is built and sprayed mortar proportioning design and control main points
It is the 10mm short fiber that sprayed deposit pouring construction water/binder ratio is preferably 0.5-0.6, interior adding length, select medium sand, the ratio of cement and medium sand for use is 1: 1.Penetrating mix proportion can be according to the requirement of standard, and need determine according to constructing structure and climatic condition, the proportioning design of sprayed mortar dampen shotcreting method, need higher sand coarse aggregate ratio in order to reduce springback capacity, the sand coarse aggregate ratio increase means that the gross area that gathers materials increases, and this just requires to wrap up surface of aggregate with more cement, to satisfy the requirement of strength of sprayed mortar, cement consumption is big more, and sprayed mortar is easy more drying shrinkage, cracking just, and cost also increases simultaneously.Therefore at first determine cement consumption, rule of thumb cement consumption is preferably 350 1 450kg/m; Secondly determine sand coarse aggregate ratio, should select coarse sand or medium sand for use, sand coarse aggregate ratio is preferably 40% one 50%, and sand coarse aggregate ratio is too high or too low easily to cause plugging, determines water/binder ratio once more, water/binder ratio is preferably 0.4-0.5, water/binder ratio is crossed conference and is caused that intensity is low, the rapid hardening weak effect, and phenomenons such as spray-up trickling, slippage, slump will be done corresponding adjustment according to the temperature wind speed of construction environment in addition.
2.1 construction material and match ratio
2.1.1 deposition is built and is used geotextiles; Adopt nonwoven, the iron wire mesh grid sheet that plays the support effect adopts; The zinc-plated quadrature mesh grid of 10# sheet (right-angled intersection braiding).
2.1.2 cement; Adopt 52.5R early strength silicate cement because hydration rate is very fast, be used to do the spraying film forming and build, adopt 42.5,52.5 portland cements generally to be better than mixed cement as sprayed mortar pouring construction performance.
2.1.3 accelerating admixture; A kind of is calcium formate, and another kind of accelerating admixture commonly used is silicate of soda (30%), and this construction technology adopts silicate of soda (30%).
2.1.4 gather materials;
Spray into mould and use neat slurry or medium sand 0 one 5mm.Concrete sprays and uses medium sand 0 one 5mm, coarse sand 4mm one 6mm, and stone 6mm one 8mm three's volume ratio is 30%, 20%, 50%.
2.1.5 concrete proportioning
Sprayed deposit pouring construction water/binder ratio is preferably 0.5-0.6, control match ratio, and the ratio of cement and medium sand is 1: 1, and the initial setting time before not adding accelerating admixture is 50min for well.With 52.5R high strength portland cement concrete mixing, be controlled at add accelerating admixture after, the initial setting time, roofing 3min～5min was used for body of wall 1min～3min, final setting time 10min.Add the volume of people's accelerating admixture (water glass) at the nozzle place, the 8%-12% that is respectively cement amount is supplied with by measuring pump, concrete mix intensity; C25 or C30.During sprayed deposit concreting mix, adding length in the concrete is that 10mm short fiber (fully breaing up with machinery), addition are 3% of cement, with mortar mixer stir 10～15 minutes stand-by, the concrete that has once stirred must be built at 20 minutes internal sprayings and be finished.
Sprayed mortar preparation water/binder ratio is preferably 0.45-0.5, with 52.5 high strength portland cements before not adding accelerating admixture, concrete mixing control initial setting time 30min final setting time 120min, the 5%-8% that the volume that adds people's accelerating admixture (water glass) at the nozzle place is respectively cement amount is supplied with concrete mix intensity by measuring pump; C30 or C35.
3, concrete curing measure
Maintenance is an important step in the construction of shotcrete, the condensation process of sprayed mortar also is the process of the further aquation of cement, the hydration reaction of cement must have under the condition of water and could take place, hydrated cementitious is because cement stone lacks moisture and can not proceed, also, capillary attraction causes contraction in the concrete because of acting on, the sprayed concrete strength of this moment is also very low, the tensile stress that contraction causes will make concrete cracking, destroyed concrete structure, the continuation that influences concrete strength increases, this method adopts the maintenance of sprinkling water behind sprayed mortar final set 1h, keep jet face sprays the maintenance film former after moistening 3～6 hours method to carry out maintenance.
4, construction sequence
4.1 at first carrying out truss principal sets up, set up the tendon prestressed cable net 1 of rope web frame, 1 on rope net is provided with angle steel horizontal support 2 and applies prestretching, whether the stress of each bar reinforcing bar cable of the completed prestressed reinforcement rope of scrutiny web frame is consistent, and adjust to unanimity, for example the present invention tests 15.20 cables, outside both sides rope prestretching 120KN, middle rope draws 8KN, hanging the shop on the net at prestressed cable then carries out concrete deposition and builds with the geotextiles 4 of aperture≤2mm or deposition with net sheet and iron wire mesh grid sheet 3 assemblys that play the support effect, its method is: earlier dead load between the width of two prestressed cable nets and construction dynamic load are carried out detailed calculated, computational methods are that the weight that the concrete weight of design thickness adds constructor person and facility multiply by safety factor, determine to adopt the diameter and the order number of wire gauze sheet iron wire with this.The combination of geotextiles iron wire mesh grid sheet assembly is: the galvanized wire mesh sheet that will determine the order number earlier launches, be combined into the width of two prestressed cable nets, the iron wire of splicing usefulness must be identical with the wire gauze diameter, and the splicing interface is consistent with the order number, just is combined into the grid of same order number.In the above with same method shop geotextiles, its length is decided in its sole discretion, depend on easy construction length and weight, roll then, the center penetrates with scaffold tube, hangs two prestressed cable net middle upper parts with tower crane and launches, and the same method of splicing wire gauze sheet and the two prestressed cable nets grid with same order number is adopted on both sides, the iron wire identical with the wire gauze diameter carries out colligation, finishes this work and should guarantee safety.After finishing above-mentioned work, online side carries out the colligation of rope web frame reinforcing bar 5 net sheets at two prestressed cables, and the rope web frame reinforcing bar 5 net sheets that resistance spot weld is welded are hung at prestressed cable online by tower crane, splice colligation and become shell integral net sheet.Answer the firm degree of colligation and the supporting capacity of scrutiny bottom geotextiles and iron wire mesh grid sheet assembly after finishing, if think that unreliable should the reinforcing guarantee that safety, reinforcing mode are geotextiles to be carried out colligation with iron wire mesh grid sheet assembly with rope web frame reinforcing bar connect.If the bigger shrinkage joint of need keeping somewhere of structure, the position of main rope that can stay the prestressed cable net is parallel with the main rope tendon, and spacing is not more than 2cm, pours into foam polyamine fat concrete construction is finished after and seals.
Adopt 2 PZ-5B pulp shooting machines 4.2 carry out concrete sprayed deposit pouring construction and construction of shotcrete
Technical data:
Production capacity 5m3/h
Rated operating pressure 0.4MPa
Fed distance (level/highly) 80/30m
Air consumption 8m3/min
Maximum aggregate diameter≤20mm
Be suitable for compound water/binder ratio 0.2～0.35%
Inner diameter of delivery tube φ 51mm
Rotor speed 11r/min
Necessary electromotor power 5.5kW
Join 8m3/min 6kg/cm
32 in air compressor, one is used for pulp shooting machine another is used for the concrete spraying nozzle and does atomization gas.
Machinery is placed on the ground during construction
4.3 the concrete spraying is built and injection is built
The concrete spraying is built; On structure load-bearing reinforced mesh, set up the operation scaffolding board for operating personnel's manipulation shower nozzle of standing, reserve and build the space, adopt and manually carry out concrete one-sided spraying deposition and build generation as the putamina of concreting with template with spraying construction width interval.The construction initial setting time is controlled at 3min-5min, whole final setting time and should adopt the roll-back method construction of withdrawing from scaffolding board while spraying greater than 10min.Before spraying,, suitably adjust water/binder ratio, adopt 8 shapes to come and go and move and advance according to the same day weather and air humidity.Section length should not surpass 6m during injection, and should be controlled to be 2m*6m is one section.The distance of nozzle and depositional plane is 1.5～2m, nozzle be subjected to the spray plane must not be vertical, answer the elevation angle make progress about 60 the degree, the mode that makes the ejection concrete be the mist that falls to wafing is fallen geotextiles and is play on the iron wire mesh grid sheet assembly of support effect, to reduce impact, make it form formwork to geotextiles iron wire mesh grid sheet assembly.The main points of controlling in the construction are the compressed air pressure control to spray gun, the tube side resistance of deduction spray gun pipeline, and the pressure of the spray gun outlet of concrete water jet pump should be greater than 1kg/cm when spraying into the mould construction
2, the compressed air adjustable range of impelling the concrete atomizing is at 4kg/cm
2～6kg/cm
2Between, build in the process in spraying with geotextiles iron wire mesh grid sheet assembly, not producing the geotechnique is furnished with injected impact grinding or geotextiles iron wire mesh grid sheet assembly and does not produce reciprocal vibrations for well, also can regulate the distance of nozzle and depositional plane, with the concrete of ejection can be stably attached on the assembly and do not come off for good.Spray gun operating personnel above in the work progress and following spray pump and air compressor operating personnel get in touch with Walkie talkie at any time and in time carry out the pressure adjustment.Formwork becomes the mould THICKNESS CONTROL at 2.5cm～3cm, makes its intensity be enough to satisfied needs as template, is convenient to form after next step concrete construction is finished superimposed concrete shell structure.Once the enough thickness sprayings that needs of spray are finished concrete and are become the mould construction.Maintenance; The method maintenance of per 1 hour employing atomized water spray once promptly can be carried out next step construction after 24 hours.Draw in people position, constructing operation station and to establish a Φ 10mm safety wirerope, constructing operation personnel's safety belt just hangs over above this, to guarantee constructor's safety.
Concrete sprays builds: adopt the sprayed mortar casting method in the concrete construction of finishing the whole suspension thin shell with thin-shell structure in top (external surface) on the putamina with template of building that generates, job practices is with common construction of shotcrete.At first again, the width interval of determining with sprayed construction on structure load-bearing reinforced mesh is set up the operation scaffolding board, for operating personnel's manipulation shower nozzle of standing, reserves and builds the space, adopts manually to carry out concrete and spray and build putamina.The injection that construction is finished structure reinforcing bars concrete lift (can dose the polypropene staple of certain ratio 2cm～3cm) respectively by two pulp shooting machines is built, and the facing concrete of admixture cement group water-proofing material is built.Withdraw playpipe after finishing the structure reinforcing bars concrete lift, spray the facing concrete of building the admixture cement group water-proofing material with another pulp shooting machine and finish whole pouring construction.Twice jet thickness is controlled at 3cm～5cm of structure reinforcing bars concrete respectively, if 3cm design thickness of facing concrete is bigger, is controlled at the blanking time that layering is sprayed and is not more than final set and less than in 1 hour.According to the same day weather and air humidity, suitably adjust water/binder ratio before spraying.Piecemeal is answered in injection, and by spraying from top to bottom, nozzle need adopt Z or 8 shapes to come and go mobile advancing.Section length should not surpass 6m during injection, and the branch block size is 2m*6m.The distance of nozzle and depositional plane is 1m～1.5m, nozzle be subjected to the spray plane must not be vertical, pouring construction is sprayed at and little deflection position of just having sprayed.
After the concrete construction sprayed mortar of the whole suspension thin shell with thin-shell structure in putamina top (external surface) of finishing template is built, carry out the sprayed mortar of thin shell structures inner face and build, on building of generating inner face, finish iron wire mesh grid sheet assembly sprayed mortar pouring construction main reinforcement rope net cable wire, support effect with the putamina of template.
During construction, conveying pipeline length should not be greater than 100m, the air compressor range of regulation is at 4kg～6kg/cm2, and sprayed mortar nozzle place pressure should be greater than 2kg/cm2, and the volume that adds people's accelerating admixture (water glass) at the nozzle place is respectively the 8%-12% water distribution dilution back of cement amount and is supplied with by measuring pump.Measuring pump should add a surge tank to the pipeline of spray gun, need to add on the measuring pump export pipeline verification accurately safety valve use as return valve.Answer follow-up investigations concrete setting situation and concrete surface quality situation after spray is finished, guarantee workmanship, the particular exam content is pressed relevant specification and is carried out.
In addition; The shell body of wall of non-structure load-bearing also can adopt the construction of this technology, construction sequence is: after geotextiles and the iron wire mesh grid sheet assembly that plays the support effect hang over load-carrying members and finish, applying certain tension stress tightens it, make it be unlikely in spraying process, to produce shake, cause concrete the crack to occur.The binding structure reinforcing bar also is connected and fixed with geotextiles and the iron wire mesh grid sheet assembly that plays the support effect, carries out sprayed deposit then.Spray gun is by from last, and sprays down, and nozzle need adopt Z or 8 shapes to come and go mobile advancing.Section length should not surpass 6m during injection, and the branch block size is 2m*6m.The distance of nozzle and depositional plane is 1m～1.5m, nozzle be subjected to the spray plane must not be vertical, and little deflection position of just having sprayed.The nozzle place should not add accelerating admixture (water glass) greater than 1kg during press atomization at the nozzle place, volume is that the 8%-12% water distribution dilution back of cement amount is supplied with by measuring pump, before the spraying, earlier with manual pulp shooting machine geotextiles with play on the iron wire mesh grid sheet assembly of support effect, to the assembly at the position of soon spraying.Moistening with accelerating admixture (water glass) spraying after the 8%-12% water distribution dilution, with two pulp shooting machines the operation of sprayed deposit film forming is carried out simultaneously in the two sides symmetry in same position then.Hanging thickness of wall body is that the 30mm construction adopts once spraying to finish.Setting rate; The construction initial setting time is controlled at 1min-3min, whole final setting time should be greater than 10min.Only promptly can to finish its method simple a step to adopt construction that this kind method carries out the concrete shell structure.
For the general construction period be the time more than 2 years, employing forms the thin walled shell building as direct gunning concrete on a kind of Dense mesh screen of safety net, the concentrated places of usefulness fire such as kitchen as processing plant or temporary employee dining room, adopt the spraying shell of 2.5～3cm suitable especially, and cost is cheaper than color steel structure.The primary structure material all can reclaim during dismounting, and discarded concrete can be used for the bed course of whole audience road concrete construction at last, accomplishes comprehensive utilization.
Claims (5)
1. the job practices of a thin shell with thin-shell structure is characterized in that: comprise following construction sequence:
1) hanging the shop deposition on the net at prestressed cable builds with the latticed assembly that adheres to carrier and reinforcing rib of concrete, to after adhering to carrier, reinforcing rib and rope net and carrying out colligation, the concreting of spraying generates as the putamina of concreting with template with the concrete bearing structure reinforcing bars.
2) on the putamina that step 1) generates, carry out sprayed mortar and build the construction of finishing thin shell with thin-shell structure.
2. the job practices of a kind of thin shell with thin-shell structure according to claim 1, it is characterized in that: the latticed carrier that adheres to described in the step 1) is porose braid or die-cut expanded material, its aperture≤2mm.
3. the job practices of a kind of thin shell with thin-shell structure according to claim 1 and 2 is characterized in that: the assembly that adheres to carrier and reinforcing rib in the step 1) is to be formed by geotextiles or strainer net sheet and the colligation of support iron wire mesh grid sheet.
4. the job practices of a kind of thin shell with thin-shell structure according to claim 1 and 2 is characterized in that: use the concrete or the use neat slurry that gather materials as medium sand 0-5mm in the step 1) in the spraying concreting; The concrete aggregate that step (2) sprayed mortar uses in building is medium sand 0-5mm, coarse sand 4mm-6mm, and stone 6mm-8mm, three's volume accounts for 30%, 20%, 50% successively.
5. the job practices of a kind of thin shell with thin-shell structure according to claim 1 and 2 is characterized in that: the pressure≤1kg/cm of spray gun outlet during step 1) spraying concreting
2
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| CN103568103A (en) * | 2012-08-10 | 2014-02-12 | 济南市天桥区杰美菱镁建材研究所 | Technological method for producing building frameworks |
| CN103723975B (en) * | 2013-12-31 | 2017-01-25 | 宝钢建筑系统集成有限公司 | Rapid-hardening steel slag mortar capable of being constructed by spraying |
| CN104234433B (en) * | 2014-08-22 | 2017-05-10 | 北京市建筑工程研究院有限责任公司 | Tensioning and forming method and tensioning device of spoke type annular cantilever cable support grid structure |
| CN104763091B (en) * | 2015-03-18 | 2017-07-07 | 上海市建筑装饰工程集团有限公司 | The netted ceiling system of large span and its installation method |
| CN111042442A (en) * | 2019-12-24 | 2020-04-21 | 华东建筑设计研究院有限公司 | Precast concrete hollow component and preparation method thereof |
| CN114164938B (en) * | 2021-09-23 | 2023-05-12 | 郑州大学综合设计研究院有限公司 | Self-balancing assembled frame thin-shell structure system and construction method thereof |
| CN114215251A (en) * | 2022-01-28 | 2022-03-22 | 中国建筑西南设计研究院有限公司 | Steel grid sprayed concrete combined dome structure and construction method thereof |
| CN114673354A (en) * | 2022-04-19 | 2022-06-28 | 中建八局总承包建设有限公司 | Construction method of complex curved surface concrete thin shell structure adopting cable mesh fabric template |
| CN115874748B (en) * | 2022-12-02 | 2023-08-29 | 中国建筑设计研究院有限公司 | Construction method of reinforced concrete large-span thin shell and shell system thereof |
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| CN1039280A (en) * | 1988-07-06 | 1990-01-31 | 武汉煤矿设计研究院 | New thin wall construction for building and job practices thereof |
| JPH0941607A (en) * | 1995-07-26 | 1997-02-10 | Haitatsuchi Futaba:Kk | Rotary stair and its execution method |
| CN101255714B (en) * | 2008-04-15 | 2010-06-09 | 河南省第一建筑工程集团有限责任公司 | Construction method for concrete macrotype xenotype shell construction body |
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