CN1111707A - Coustruction method and facilities for building hyperbola concrete tower - Google Patents
Coustruction method and facilities for building hyperbola concrete tower Download PDFInfo
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- CN1111707A CN1111707A CN 94117449 CN94117449A CN1111707A CN 1111707 A CN1111707 A CN 1111707A CN 94117449 CN94117449 CN 94117449 CN 94117449 A CN94117449 A CN 94117449A CN 1111707 A CN1111707 A CN 1111707A
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Abstract
The present invention adopts the following three methods to constantly measure and lap high coordinating the building height of concrete barrel, the first lines up and measures the slant radious by the transit suspended disc to control the installation of barrel wall shuttering, the second is the turnover form construction method of special composite steel shuttering to make the concrete of joint position between lower and upper layers of radious-variable barrel shuttering be level and smooth and the third is the vertical transportation lifter mechanism composed of lifter used in construction and wall attachment supporter. The advantages are once lining up capable of measuring many sections of shuttering installation, high efficiency, small error, unnecessary to specially make shuttering of radious-variable concrete barrel and the cost of lifter is much cheaper.
Description
The present invention relates to the job practices and the facility of building field.Be specially adapted to build the construction of the big structure cylindrical shell of hyperbola concrete tower height, as the cooling tower of power plant, air cooling tower etc.
The job practices and the facility of prior art hyperbola concrete structure cylindrical shell, the control of cylindrical shell radius adopts outstanding dish plumb bob centering, steel ruler to measure radius method, hanging scaffold is strained (radius can reach more than 50 meters) in the horizontal direction by orthogonal four seizing wires during centering, big plumb bob below the hanging scaffold center is implemented centering, (vertical line is the longest to be reached more than 100 meters) one is subjected to wind-force slightly, the plumb bob swing is more than, and the degree of accuracy of centering is difficult for guaranteeing; Generally build once joint or two joint barrels and need centering one subcenter, time-consuming, as build the outstanding dish of 135 meters towers plumb bob just need centering more than 40 times.
Prior art, use laser centering method, not only cost an arm and a leg, and need special professional to measure, generally can only be used to measure the less concrete cylindrical shell centering of radius,, and can not be used to measure the big concrete structure center of radius as chimney etc., when constructing because of barrel, survey crew can't arrive the center.
The construction elevator that prior art is applied in hyperbola concrete tower discloses CN2126636Y tilting construction elevator, it is in order to shorten the spacing between guide rail bracket and the tower structure top, guide rail bracket is obliquely installed, the column of its corresponding cage is obliquely installed the back at cage, driving mechanism in the drive train is stepped to be in tilted layout etc., its weak point complex structure is big by the dress difficulty.
Openly CNLZ93201988.9 adheres to the lift-type door frame again, and it is used to build the superelevation chimney and does not need to run derrick and scaffold, but it only is suitable for being not more than 25 meters and linearly use in the tall and big structure construction of shape at the barrel diameter.
Adopt of the template system of prior art hyperbola tower construction adhered to tripod turnover panel method more, but template adopts tool-type standard combination steel form or hyperbola tower special-purpose steel template, and its weak point, the former difficulty or ease satisfy the quality requirement of hyperbola tower cylindrical shell construction.Become the radius state because of the barrel of cylindrical shell is in constantly, the conventional criteria template can't satisfy the construction requirement that levels is received the slope, promptly can not guarantee the construction quality of the upper and lower layer of template joint, is easy to generate quality problems such as template faulting of slab ends, spillage.The latter uses limitation, can not be general in other engineering construction, thereby increased engineering cost.
The object of the invention in order to overcome the prior art weak point, provides the job practices and the facility of a cover building hyperbola concrete tower structure cylindrical shell.Propose a kind of outstanding dish centering and measure the method that oblique radius combines, control concrete cylindrical shell center non-migration; A kind of special-shaped combined steel formwork is provided, solves the receipts slope of the template levels joint that becomes the radius cylindrical shell; Design in a kind of cylindrical shell that is suitable for hyperbola concrete tower and make elevating mechanism of vertical transport etc.Make it to measure the efficient height, error is little; The template levels is connected firmly tightly, and versatility is arranged; Vertical transport efficient height, safe and reliable to operation etc.
The present invention adopts following scheme to realize.
The measuring method that mainly comprises the cylindrical shell center, elevating mechanism, operating platform, template system etc., these all cooperate the concrete cylindrical shell to build height and constantly measure, take height, meanwhile toward watering concrete between inner and outer template, shed template then.It is characterized in that:
1, adopt transit survey outstanding dish centering and measure the method that oblique radius combines, the installing of application cylinder wall form is to guarantee the center non-migration of hyperbola concrete tower cylindrical shell.
2, template system adopts the turnover panel job practices of tool-type unit combination steel form.The unit combination steel form is made up of 3-5 piece monolithic plane steel form and 1 adjustable formwork, upper and lower layer steel form joint, unit, with the Chang Yuan hole on the steel form minor face frame of plane, regulate the construction requirement that the levels template is received the slope, smooth smooth to satisfy the concrete that becomes radius cylindrical shell template levels joint.
3, the construction elevator structure comprises construction elevator and attached wall bracing frame, and based on construction elevator, replacement runs derrick and cage and drive unit etc., and attached wall bracing frame is made up of rigid mount and pavement frame, and its cooperates, and building of concrete structure cylindrical shell is high sets up by joint.
Describe the method for technical solution of the present invention and architectural feature, the annexation of facility in detail below in conjunction with the accompanying drawing that embodiment provides.
Fig. 1 is a construction elevator structure user mode schematic diagram of the present invention;
Fig. 2 connects vertical view for the general assembly of elevating mechanism of the present invention;
Fig. 3 is the rigid mount connection diagram of hoist of the present invention and attached wall bracing frame;
Fig. 4 is the pavement frame and the concrete barrel connection diagram of the attached wall bracing frame of the present invention;
Fig. 5 for the outstanding dish of the present invention centering method by the tower center O direction line schematic diagram of outside tower, extending;
Fig. 6 is the outstanding dish of the present invention centering method centering schematic diagram;
Fig. 7 is oblique radius method schematic diagram for the present invention measures;
Fig. 8 installs schematic diagram for the special-shaped combined steel formwork assembling combination of template system of the present invention;
Fig. 9 is a monolithic of the present invention plane steel form left side view;
Figure 10 is a monolithic of the present invention plane steel form front view;
Figure 11 is a monolithic plane steel form right side view for this.
Detailed description of main elements: construction elevator (1), rigid mount (2), pavement frame (3), concrete barrel (4), elevator guide rails (5), end cage (6), cage (7), channel-section steel link (8), special-shaped connector (9), frame is buckled (10), single tube column (11), two-tube column (12), rigid mount transverse horizontal bar (13), rigid mount vertical equity bar (14), hound (15), pavement frame transverse horizontal bar (16), pavement frame vertical equity bar (17), pre-embedded bolt (18), lag bolt (19), U-bolt (20), nut (21), packing ring (22), short frame pipe (23), unit combination steel form (24), monolithic plane steel form (25), regulate template (26), U type card (27), panel (28), frame (29), rib (30) in length and breadth, last minor face frame (31), following minor face frame (32), Chang Yuan hole (33), hole, garden (34), long limit frame (35), ribs (36), split bolt hole (37), enclose purlin (38), vertical rod (39), split bolt (40), tripod (41), typing scaffold floor (42), vertical push rod (43), outstanding dish (44), steel ruler (45), big plumb bob (46), horizontal stay cord (47), vertical stay cord (48), directive wheel (49), jack (50), transit (51), Directional Sign (52).
The construction elevator of existing vertical transport, it uses regulation: the distance of hoist and construction wall is controlled at about 3 meters, can not be directly used in the vertical transport construction of building the tower structure of hyperbola concrete.Change greatly for adapting to hyperbola tower sweep, characteristics such as superelevation the invention provides a kind of construction elevator structure that is combined and formed by construction elevator and attached wall bracing frame, shown in Fig. 1～4.It helps promoting construction speed and personal safety etc.
Construction elevator (1) is selected the H150 type for use, includes guide rail bracket (5), end cage (6), cage (7), drive unit and channel-section steel link a complete set of equipment such as (8).It is that approved product, facility are complete, replaces with it to run derrick and cage and drive unit.Use it, do not need picture CN2126636Y tilting construction elevator specialized designs, make guide rail bracket, guide wheel etc., and have safe and reliable to operationly, carrying capacity is big, vertical transport efficient advantages of higher.
Use regulation in order to meet it: the distance that satisfies hoist and construction wall is controlled at about 3 meters, the present invention sets up the attached wall bracing frame of a special construction, this attached wall bracing frame can cooperate hyperbola concrete structure barrel diameter from following go up by greatly → little → big variation and barrel link, like this with regard to the instructions for use that can support and satisfy H150 type construction elevator as shown in Figure 1, 2.
The attached wall bracing frame of setting up, in order to reach the instructions for use of above-mentioned construction elevator, structurally by rigid mount (2) and pavement frame (3) formation that combines, its cooperates, and building of hyperbola concrete structure cylindrical shell is high sets up by joint, and its rigidity and construction elevator (1) load is complementary.
1) rigid mount (2) as shown in Figure 2, form by column (11), two-tube column (12), transverse horizontal bar (13), vertical equity bar (14), hound (15), buckleing (10) with frame is fixedly connected, longitudinal and transverse horizon bar (14), (13) cross fixation in length and breadth are unified into the horizontal stand face on column (11), (12), the spatial separation of the flat stent cover of every water saving is the vertical height of a joint template, and pitch of the present invention is 1500mm.
For strengthening the rigidity of rigid mount (2), the measure of being taked:
One, between the column (11) of the and arranged on left and right sides of rigid mount (2), hound (15) is housed from bottom to top;
Two, the column of rigid mount (2), the column that removes and arranged on left and right sides is single tube column (11), all the other all adopt two-tube column (12).Two-tube column (12) is to use with two steelframe Guan Bingwei one root posts.Because of longitudinal and transverse horizon bar (13) (14) (16) (17) of this attached wall bracing frame and the general steelframe pipe that column (11) is all selected φ 48 * 3.5mm for use, so do not need proprietary material fully.
Connect with special-shaped connector (9) is parallel between the transverse horizontal bar (13) of the front side of rigid mount (2) and the channel-section steel link (8) of construction elevator (1), it is fixedly connected and a little generally is no less than everywhere, as shown in Figure 3.Make rigidity frame (2) vertical from bottom to up and be parallel to the guide rail (5) of hoist (1).So just provide a solid firm attached ledge, make hoist (1) in the construction of the tower structure of tall and big concrete, can stablize, carry out efficiently the vertical transport construction to construction elevator.
The transverse horizontal bar (14) of rigid mount (2) rear side is buckled (10) with the vertical equity bar (17) of pavement frame (3) with frame and is connected, and rigid mount (2) combines with pavement frame (3) and constitutes attached wall bracing frame.
2) pavement frame (3) as shown in Figure 2, mountain vertical rod (11), transverse horizontal bar (16), vertical equity bar (17) are formed, vertical, horizontal horizon bar (17), (16) intersect, buckleing (10) with frame is fixed in the vertical rod (11) and is unified into horizontal plane, the spatial separation on every water saving plane is the vertical height (the template height that the present invention adopts is 1500mm) of a joint template, the interplanar spacing of vertical equity bar (17) is not less than end cage (6), cage (7) width of hoist (1), and the interplanar spacing of transverse horizontal bar (16) and the width of steel frame plate are complementary.
The front end of pavement frame (3) is buckled (10) with the transverse horizontal bar (13) of rigid mount (2) with frame by vertical equity bar (17) and is connected, the rear end connects with built-in fitting bolt (18) on the concrete barrel (4) by transverse horizontal bar (16), bolt (18) is gone up the short frame pipe (23) of cover, pad washer (22), and is fastening with nut (21).
The characteristics of pavement frame of the present invention (3) are: pavement frame (3) length cooperates concrete structure cylindrical shell curvature changing from bottom to up and extends or shorten.
Be to guarantee the stability of construction elevator, be provided with many cable ropes in the and arranged on left and right sides of the rigid mount (2) of attached wall bracing frame in the superelevation vertical transport.Cable rope is provided with at a certain distance in the cylindrical shell short transverse, and every cable rope one end colligation is in the vertical rod (11) of the left and right side of rigid mount (2), and the other end is fixed on the pre-buried steel loop of concrete barrel (4).
The construction elevator structure of vertical transport of the present invention, owing to set up the attached wall bracing frame of structure uniqueness, solved the monolithic stability of construction elevator away from the structure barrel, can control the vertical missing of construction elevator, thereby make construction elevator (1) in building tall and big hyperbola concrete structure, realize vertical transport.
For making the center non-migration of hyperbola concrete cylindrical shell, adopt outstanding dish centering method and measure the oblique radius method of combining to install the barrel cope match-plate pattern, shown in Fig. 5～7.Dividing at 3 below is described as follows:
Be provided with outstanding dish centering and rise controlling organization, comprise 4 horizontal stay cords (47), 4 directive wheels (49), 4 jacks (50) and 1 vertical stay cord (48).4 horizontal stay cords (47) are orthogonal, one end is fixed on the outstanding dish (44), the other end is gone up corresponding directive wheel (49) by concrete barrel (4) respectively, connect with the jack (50) at concrete cylindrical shell lower ring place, vertical stay cord (48) one ends tie up under the outstanding dish (44), and the other end connects with ground.
Outstanding dish centering method step (seeing shown in Fig. 5,6).
1) by tower center O point, outside tower, draw perpendicular each other two direction line OA, OB, see shown in Figure 5.Transit (51) is placed the O point, become 90 ° of directions to establish A, B 2 points in the tower outside with transit (51), and draw Directional Sign (52) on zero rice barrel, promptly Directional Sign (52) is on OA, OB direction line, and aiming point uses when doing the tower external pelivimetry.2 of A, B be apart from tower heart O point distance, should make the elevation angle β that draws the direction line on the tower barrel (4) by A, B point be not more than 42 ° and be advisable.Because of elevation angle β greater than 42 °, survey crew is difficult to observe, and influences precision.
2) rise outstanding dish (44) to barrel (4) desired height, outstanding dish (44) center hangs 1-3 root steel ruler (45), hangs big plumb bob (46) by vertical stay cord (48) under the outstanding dish (44), makes the rough centering of outstanding dish (44), as shown in Figure 6.
3) place A, B point respectively with two transits (51), and sight O point or Directional Sign (52), OA, OB direction line are guided to the barrel (4) that has watered concrete go up the plane, putting transit (51) again goes up on plane AO, the BO direction line in concrete barrel (4), difference backsight A point, B point, the telescope of reversing transit (51), the sight line of two transits this moment (51) is AO, BO direction line, and its intersection point is the central point O of tower.Monitor down at two transits (51) this moment, the jack (50) of tension or relaxation level stay cord (47) termination, and (jack (50) is 0.5 ton) makes the accurate centering of outstanding dish (44).Lock jack (50) this moment, and the vertical stay cord (48) under the outstanding dish of tension (44) makes outstanding dish (44) centering, and maintain static (seeing shown in Figure 6).
Measure oblique radius method, as shown in Figure 7.
1) measures the absolute altitude that calculates outstanding dish
H
Dish=H+h
h＝S′·Sinα+i
In the formula: H
DishThe absolute altitude of-outstanding dish
The design elevation on plane on the barrel of H-placement transit.
Elevation difference on the h-barrel between plane and the outstanding dish.
The oblique distance at S '-outstanding disk center to theodolite telescope center.
α-transit center is to the depression angle of outstanding disk center.
I-transit height.
2) the calculating radius is tiltedly long
In the formula: R
i-concrete tower barrel joint is gone up the planar design radius.
H
i-concrete tower barrel joint is gone up the planar design absolute altitude.
H
DishThe absolute altitude of-outstanding dish.
3) with steel ruler with the 200N pulling force, correctly install the position by what the oblique radius length of calculating was determined this joint template.
The outstanding advantage of measuring method of the present invention is: outstanding dish (44) promote centering once after, concrete barrel (4) the 15-20 joint template height of can constructing.Install determining of position, i.e. oblique radius R because of every joint template
, R
I(n+1), R
I(n+2)... can be that benchmark calculates measurement all,, can repeatedly measure the oblique radius R 1 of every joint formwork erection so outstanding dish (44) promotes centering once in the position after outstanding dish (44) centering.Just go up on the plane, with the 200N pulling force, press the oblique radius R that calculates with steel ruler (45) at the concrete barrel of having built (4)
I is obliqueGo to measure, that can determine a last joint template correctly installs the position, builds one 135 meters high hyperbola air cooling tower, use measuring method of the present invention, can arrive the top, the saving of labor, save time as long as promote (44) four centerings of outstanding dish, and degree of accuracy height, guaranteed cylindrical shell center non-migration.And overcome and avoided the shortcoming of outstanding dish plumb bob centering method.
Template system adopts tool-type unit steel form turnover panel job practices, as shown in Figure 8, is made up of steel form, connector, supporting member.
Unit steel form (24) is made up of a 3-5 piece monolithic plane steel form (25) and an adjustable formwork (26), on guaranteeing, the joint is tight between lower floor's unit tool-type steel form (24), regulate with the Chang Yuan hole (33) on the minor face frame (31) on the steel form of plane, can communicate with the Chang Yuan hole (33) that lower floor's unit steel form (24) is gone up on the minor face frame (31) with the hole, the only rare garden of following minor face frame (32) (34) that guarantees upper unit steel form (24), Chang Yuan hole (33) provide upper unit steel form (24) that the possibility of adjustment is arranged.In the construction of constructing because of hyperbola is tower, the cylindrical shell radius constantly changes, so what need unit steel form (24) can cooperate cylindrical shell to do corresponding the adjustment by holding position, after upward the connecting hole of minor face frame (31) changes Chang Yuan hole (33) into monolithic plane steel form (25) for this reason, just can guarantee, lower template correctly connects, overcome on the ordinary steel template, the inconsistent phenomenon in hole, buckle garden when dress is pressed by lower floor, so Chang Yuan hole (33) solve and have satisfied the construction needs of structure variable cross-sections, make, lower template is faulting of slab ends not, seam is spillage not tightly, on, the concrete surfacing of lower template seam crossing is smooth, thereby guarantees construction quality.
Monolithic plane steel form (25) is equipped with connecting hole on frame (29) shown in Fig. 9,10,11, wherein go up minor face frame (31) and be provided with two Chang Yuan holes (33), is provided with ribs (36) between the pitch-row of two Chang Yuan holes (33).
The modular dimension (length and width) of monolithic plane steel form (25) adopts the standards system of the general template numeral system of China, length is 1500,1,250 two kinds, the width of template is 300,200,1500,100 4 kind, the template size of embodiment Fig. 8 (mm): length is 1500, wide be 200.
As seen from last, the special-shaped combined steel formwork of the present invention has extended the operating characteristic of standard steel template, and has kept the characteristic of standard combination steel form.All adopt the standards system of the general modular system of China as the modular dimension (length and width) of monolithic plane steel form (25), versatility is arranged.
Regulate template (26) as shown in Figure 8, the hole, garden (34) on the long limit frame (35) of the position in the hole, garden (34) on its sidewall and aperture and monolithic plane steel form (25) is all identical.Regulate template (26) when template system carries out the turnover panel construction, can play compensation and regulating action, make unit steel form (24) can realize satisfying tower concrete structure cylindrical shell and become the radius needs.
Template system installs step as shown in Figure 8.
1) unit combination steel form (24) assembling.Earlier 3 plane steel forms (25) are regulated template (26) with 1, on the hole, garden (34) of long margin frame (35), after dress lag bolt (19) assembling at interval is connected into one, be contained in and water on the concrete barrel (4) that solidifies, the garden hole (34) of 2 monolithic flat formworks (25) on long margin frame (35) gone up be connected into one again with lag bolt (19); Connect the jail with U type card (20) between the above-mentioned two bulk combined steel formworks, be installed in concrete barrel (4) and go up formation unit combination steel form (24).
With the method, unit combination steel form (24) is located at one week of barrel, assembling constitutes a joint template.
2) dress encloses purlin (38).At the upper/lower terminal of the short transverse of every joint unit combination steel form (24), laterally respectively be provided with two road steel and enclose purlin (38) supporting.Steel encloses purlin (38) and adopts channel-section steel.
3) dress vertical rod (39).Vertical dress vertical rod (39) supporting in the adjusting template (26) of every joint unit combination steel form (24).Vertical rod (39) is made with angle steel, and vertical rod (39) is provided with and regulates template (26) corresponding split bolt hole (37), and vertical rod (39) is pressed in encloses above the purlin (38).
4) dress split bolt (40).Split bolt (40) passes regulate in template (26), the vertical rod (39) two to drawing screw (37), fixes with unit combination steel form (24) relative position that nut (21) is inside and outside two layers with concrete barrel (4).
When 5) loading onto a joint unit combination steel form (24), will be down with the following minor face frame (32) of hole, garden (34), Chang Yuan hole (33) on the last minor face frame (31) of hole, an only rare garden (34) and lower floor's unit combination steel form (24) communicates, and connects the jail with U type card (27).
Adopt the special-shaped plane of the present invention steel form, builds one 9020 square metres the hyperbola air cooling tower need with long * wide be 9720 of 1500 * 200 steel forms, 270,000 yuan of total prices also need to use 2000 of adjusting templates, 3.2 ten thousand yuan of total prices.These templates after engineering finishes, also can forward in other engineering and use repeatedly in week.
Inside and outside two circles of this external concrete barrel (4) are equipped with the suspension type operating platform, install on the barrel (4) attached to the concrete cylindrical shell, along with the pouring of the every joint concrete of cylindrical shell, solidify, and from bottom to top turnover promotes, and plays a part scaffold, as shown in Figure 7.
The suspension type operating platform is formed (as shown in Figure 7): mainly comprise a cover A type bracketplant, two cover typing scaffold floors (42), three cover tripods (41), vertical push rod (43) etc., adhere to and be installed on the concrete barrel (4) that sufficient intensity is arranged that has solidified, rely on the intensity of concrete barrel (4) and the shearing resistance of split bolt (40), live load and quiet lotus when bearing construction.
The invention described above job practices and facility, on probation in two 9020 square metres of air cooling towers constructions of Taiyuan two power plant.135 meters of this air cooling tower heights, cylindrical shell are hyperbola, and zero rice radius of tower is 60 meters, and 114 meters of throat's absolute altitudes, throat radius are 32 meters, and promptly zero rice radius R with tower differs 28 meters, and the cat head radius is 34 meters, is one of maximum air cooling tower in the whole nation.Practical proof job practices of the present invention and facility have many advantages and distinct economic.
The overall merit of construction method of the present invention and facility:
1, takes full advantage of ready-made modular system and instrument for the basis, adopt corresponding technical measures combined with it, propose various new construction methods and facility, solved the difficult problem in the tall and big structures construction of building double curved concrete. As created the attached wall bracing frame that is configured to by rigid mount and pavement, and make building hoist not be subjected to the height of structures and the impact that curvature changes, can be as the vertical transport elevating mechanism of building double curved concrete tower; Utilize for another example transit survey outstanding dish centering and measure oblique radius method, solved the tall and big concrete structures cylindrical shell of building center and be not offset; And for example change the hole, garden on the standard combination steel form minor face into the Chang Yuan hole, solved the problems such as upper and lower layer formwork faulting that become radius concrete cylindrical shell employing turnover panel construction method.
2, the construction quality needs of building double curved concrete structures cylindrical shells have been satisfied. Build up such as the full tower of the present invention, outstanding dish needs only centering about four times, and the error of centralization little (being no more than 1cm) has guaranteed that the concrete cylindrical shell is not offset; And for example adopt Special composite steel shuttering, make upper and lower layer template joint tight, spillage not makes drum surface smooth smooth etc.
3, guaranteed that construction speed is fast. Reliable such as construction lifting mechanism of the present invention, vertical transport efficient height, rising or falling speed is fast. Since simple in structure, can in tower, set up two covers in case of necessity, and construction speed has been accelerated in operation greatly simultaneously.
4, saving of labor, material-saving, remarkable in economical benefits. If any Special composite steel shuttering, make in the construction of double curved concrete structures and need not make disposable plank sheathing or special-purpose punching block, after engineering finishes, also can forward Reusability in other engineering week to, save steel; And for example construction lifting mechanism of the present invention is saved about 400,000 yuan of steel, equipment and labour cost than perpendicular 150 meter 12 hole derrick; The outstanding dish of the present invention centering method is saved than general outstanding dish plumb bob centering method and is measured man-hour more than 90% for another example.
Comprehensively above-mentioned, the present invention be the building double curved concrete tower many, fast, good, the province construction method and facility, popularizing application prospect is arranged.
Claims (10)
1, the job practices and the facility of building hyperbola concrete tower, mainly comprise the measuring method, template system, elevating mechanism, operating platform at cylindrical shell center etc., these all cooperate the concrete cylindrical shell to build height and constantly measure, take height, meanwhile water concrete toward between inner and outer template, shed template then, it is characterized in that:
1) determines installing of barrel cope match-plate pattern, adopt transit survey outstanding dish centering and measure the method that oblique radius combines;
2) template system adopts the turnover panel job practices of tool-type unit combination steel form, and the unit combination steel form is made up of 3-5 piece plane steel form and 1 adjustable formwork, and upper and lower layer steel form junction, unit regulated with the Chang Yuan hole on the steel form minor face frame of plane.
3) the construction elevator structure comprises construction elevator and attached wall bracing frame, and based on construction elevator, replacement runs derrick and cage and drive unit, and attached wall bracing frame is made up of rigid mount and pavement frame, and its cooperates, and building of concrete structure cylindrical shell is high sets up by joint.
2, job practices according to claim 1 and facility, its outstanding dish centering method key step is:
1), outside tower, draws perpendicular each other two straight line OA, OB, and drawing Directional Sign with zero rice barrel intersection by concrete tower center O point;
2) rise outstanding coiling,, make the rough centering of outstanding dish with the plumb bob that outstanding dish hangs down to the barrel desired height;
3) establish with two transits surveys, make the accurate centering of outstanding dish.
3, according to described job practices of claim 2 and facility, it is characterized in that being provided with outstanding dish centering and rise controlling organization, comprise 4 horizontal stay cords, 4 directive wheels, 4 jacks and 1 vertical stay cord, 4 horizontal stay cords are orthogonal, one end is fixed on the outstanding dish, and the other end connects with the jack at cylindrical shell lower ring place respectively by corresponding directive wheel on the barrel, vertical stay cord one end ties up under the outstanding dish, and the other end connects with ground.
4, according to described job practices of claim 2 and facility, it is characterized in that the accurate centering method of outstanding dish, be that two transits are placed A respectively, the B point, and sight O point or Directional Sign, AO, BO direction line is guided to plane on the barrel that has watered concrete, put transit plane AO on barrel again, on the BO direction line, difference backsight A point, the B point, the telescope of reversing transit, this moment, the transit sight line was AO, BO direction line, its intersection point is the central point O of tower, under the supervision of two transits, the jack of tension or relaxation level stay cord termination makes outstanding dish accurately be centered in AO, on the BO direction line, the locking jack, the vertical stay cord under the outstanding dish of tension.
5,, it is characterized in that measuring oblique radius method and be according to described job practices of claim 1 and facility:
1) measures the absolute altitude that calculates outstanding dish.
H
Dish=H+h
h＝S′·Sinα+i
In the formula: H
DishThe absolute altitude of-outstanding dish
The design elevation on plane on the barrel of H-placement transit.
Elevation difference on the h-barrel between plane and the outstanding dish.
The oblique distance at S '-outstanding disk center to theodolite telescope center.
α-transit center is to the depression angle of outstanding disk center.
I-transit height.
2) the calculating radius is tiltedly long
In the formula: R
i-concrete tower barrel joint is gone up the planar design radius.
H
i-concrete tower barrel joint is gone up the planar design absolute altitude.
H
DishThe absolute altitude of-outstanding dish.
3) with steel ruler with the 200N pulling force, correctly install the position by what the oblique radius length of calculating was determined this joint template.
6, according to described job practices of claim 1 and facility, the rigidity frame that it is characterized in that attached wall bracing frame, form by column, transverse horizontal bar, vertical equity bar, hound, with frame link connect fixing, longitudinal and transverse horizon bar cross fixation in length and breadth is unified into the horizontal stand face on column, the spatial separation of the flat stent cover of every water saving is the vertical height of a joint template, adorns hound between the vertical rod of and arranged on left and right sides from bottom to top.
7, according to described job practices of claim 1 and facility, it is characterized in that the pavement frame is made up of vertical rod, transverse horizontal bar, vertical equity bar, longitudinal and transverse horizon bar intersection is buckled to be fixed on frame and is unified into horizontal plane on the column, the spatial separation on every water saving plane is the vertical height of template, the interplanar spacing of vertical equity bar is not less than the cage width of hoist, and the width of the interplanar spacing of transverse horizontal bar and rigid frame plate is complementary.
8, job practices according to claim 7 is characterized in that the width of every joint pavement frame horizontal plane in the cylindrical shell equates that length extends with concrete cylindrical shell curvature changing from bottom to up or shortens.
9, according to described job practices of claim 1 and facility, the rigid mount front side that it is characterized in that the attached wall bracing frame of elevating mechanism connects with special-shaped connector is parallel with the link of construction elevator, keep vertical from bottom to up, and the guide rail that is parallel to construction elevator, the rear side of rigid mount connects with pavement frame front end, and pavement frame rear end connects with the concrete barrel.
10, according to described job practices of claim 1 and facility, it is characterized in that being equipped with connecting hole on the frame of monolithic plane steel form of template system, wherein go up the minor face frame and be provided with two Chang Yuan holes, be provided with ribs between two Chang Yuan hole pitch-rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94117449 CN1048068C (en) | 1994-12-14 | 1994-12-14 | Coustruction method and facilities for building hyperbola concrete tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94117449 CN1048068C (en) | 1994-12-14 | 1994-12-14 | Coustruction method and facilities for building hyperbola concrete tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1111707A true CN1111707A (en) | 1995-11-15 |
| CN1048068C CN1048068C (en) | 2000-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94117449 Expired - Fee Related CN1048068C (en) | 1994-12-14 | 1994-12-14 | Coustruction method and facilities for building hyperbola concrete tower |
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| Country | Link |
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| CN (1) | CN1048068C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362195C (en) * | 2004-08-20 | 2008-01-16 | 华东建筑设计研究院有限公司 | Method for machining and mounting leaning tower pedestal built-in anchor bolt |
| CN100404761C (en) * | 2004-08-20 | 2008-07-23 | 华东建筑设计研究院有限公司 | Method for balancing overturning force of major structure by foundation weight balancing |
| CN103217149A (en) * | 2013-03-11 | 2013-07-24 | 浙江省建工集团有限责任公司 | Hyperbola reinforced concrete cooling tower cylinder wall construction and measurement method |
| CN103255918A (en) * | 2013-05-29 | 2013-08-21 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN105008636A (en) * | 2012-11-21 | 2015-10-28 | 西门子公司 | Slipformed concrete tower |
| CN108871151A (en) * | 2018-08-15 | 2018-11-23 | 中国电建集团贵州电力设计研究院有限公司 | A kind of measuring device and its application method for cooling tower tower radius |
| CN116575336A (en) * | 2023-04-28 | 2023-08-11 | 中交公路规划设计院有限公司 | Novel positioning device suitable for bottom of steel cable tower and construction method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677903A (en) * | 2012-05-12 | 2012-09-19 | 中国十七冶集团有限公司 | Alignment method for center of cylinder wall in hyperbolic reinforced concrete cooling tower construction |
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1994
- 1994-12-14 CN CN 94117449 patent/CN1048068C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362195C (en) * | 2004-08-20 | 2008-01-16 | 华东建筑设计研究院有限公司 | Method for machining and mounting leaning tower pedestal built-in anchor bolt |
| CN100404761C (en) * | 2004-08-20 | 2008-07-23 | 华东建筑设计研究院有限公司 | Method for balancing overturning force of major structure by foundation weight balancing |
| CN105008636A (en) * | 2012-11-21 | 2015-10-28 | 西门子公司 | Slipformed concrete tower |
| CN103217149A (en) * | 2013-03-11 | 2013-07-24 | 浙江省建工集团有限责任公司 | Hyperbola reinforced concrete cooling tower cylinder wall construction and measurement method |
| CN103217149B (en) * | 2013-03-11 | 2016-02-24 | 浙江省建工集团有限责任公司 | A kind of hyperbolic steel reinforced concrete Cooling Tower Wall Construction measuring method |
| CN103255918A (en) * | 2013-05-29 | 2013-08-21 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN103255918B (en) * | 2013-05-29 | 2015-05-20 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN108871151A (en) * | 2018-08-15 | 2018-11-23 | 中国电建集团贵州电力设计研究院有限公司 | A kind of measuring device and its application method for cooling tower tower radius |
| CN116575336A (en) * | 2023-04-28 | 2023-08-11 | 中交公路规划设计院有限公司 | Novel positioning device suitable for bottom of steel cable tower and construction method |
| CN116575336B (en) * | 2023-04-28 | 2024-04-16 | 中交公路规划设计院有限公司 | Positioning device suitable for bottom of steel cable tower and construction method |
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|---|---|
| CN1048068C (en) | 2000-01-05 |
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