Ming dynasty-style building concrete bucket-arch piece pre prefabricated construction technique
Technical field
The present invention relates to field of civil engineering, particularly Ming dynasty-style building concrete bucket-arch piece pre prefabricated construction technique.
Background technology
At open (bulletin) number: in the CN1364684 patent documentation, disclose a kind of very bright clear ancient building element precast production method of preventing, this method is at first made the member basic in kind of ancient building timber compoment; With mold glue above-mentioned basic member in kind is turned over mould then, and choose suitable concrete grade and rebar ratio, carry out element precast with resulting mould; The last ancient building of building is as required selected prefabricated member, again to prefabricated components lifting splicing butt welding, and to the cast-in-place concrete of butt welding part.But the weak point that this production method exists has: 1. need make the member basic in kind of ancient building timber compoment earlier, and in the bright clear building modelled after an antique, the quarrel size is little, correlation is tight, accurately each member material object is made, and being has suitable difficulty.2. the method that adopts welding is installed, need on member, reserve steel plate or reinforcing bar, and the quality of welding will have influence on the security of integrated member, the difficulty of control construction quality is bigger, and butt welding again after 3. lifting component being put in place is in work high above the ground, inefficiency, the probability that produces construction error increases greatly, and the position difficulty of accurately proofreading and correct each member is bigger, and will expend a large amount of man power and materials.
Summary of the invention
In order to overcome above-mentioned prior art deficiency, the invention provides Ming dynasty-style building concrete bucket-arch piece pre prefabricated construction technique, purpose is to improve construction quality and production efficiency, reduces installation difficulty.
To achieve these goals, technical scheme of the present invention is achieved in that
Concrete sets of brackets on top of the columns of the present invention adopts bulk-breaking prefabricated, integral assembling, and the construction technology of integral installation comprises the steps:
1) produces the wooden sets of brackets on top of the columns model of a bracket sets between columns, make according to the sequential system of bulk-breaking and play head, melon arch, railway carriage or compartment arch, ten thousand arches, bucket seat, again each bulk-breaking is connected into 1/2 and collects together the sets of brackets on top of the columns system with sticking up;
2) put each single-piece and play head, melon arch, railway carriage or compartment arch, ten thousand arches, bucket seat member sample;
3) carry out the batch production of sets of brackets on top of the columns bulk-breaking and produce, adopt lightweight concrete, in the construction of haydite concrete, half a day haydite is watered water-wet in advance, the time is in 30-100 second during concrete vibrating;
4) stigmula section, bracket sets between columns, angle section connects into 1/2 to each single-piece with the concrete that sticks up separately in the sets of brackets on top of the columns system and collects together sets of brackets on top of the columns, specifically is on timber apron, accurately install location-plate, play each bulk-breaking member head, railway carriage or compartment arch, melon arch, ten thousand arches, bucket seat to fix, the template of sticking up is installed again, build the concrete that sticks up, this concrete and bulk-breaking should be same kind and label, form 1/2 sets of brackets on top of the columns of collecting together;
5) connect into the thin portion of 1/2 sets of brackets on top of the columns of collecting together and repair, repair and after the template that dismounting is stuck up, carry out: repair with fine sand+cement mortar+white cement+108 glue;
6) after component strength reaches 100%, it is in place that sets of brackets on top of the columns is collected together in lifting 1/2;
7) the sets of brackets on top of the columns installation in position respectively 1/2 is collected together in the inside and outside, sets of brackets on top of the columns on same axis will be installed the corner corbel-bracket set at the negative and positive angle at two ends earlier, again with the position of two ends sets of brackets on top of the columns control in the middle of sets of brackets on top of the columns the position, correction when about 1/2 collects together the sets of brackets on top of the columns installation is undertaken by the order of absolute altitude, axis, control line, proofread and correct earlier the absolute altitude of sets of brackets on top of the columns, proofread and correct center line again, reexamine the control line of perpendicularity, flatness and the member of member, on the same axis and the sets of brackets on top of the columns inside and outside the same position must draw logical line to carry out secondary to proofread and correct;
8) the sets of brackets on top of the columns reserved steel bar is with the reinforcing bar welding of pad arch bar, and this reinforcing bar welding should be adopted two-sided welding;
9) concrete construction of pad arch bar, the concrete construction that adopt to divide axis segmentation pad arch bar, template adopts mirror board, about each 1/2 collect together sets of brackets on top of the columns and be connected to form one and collect together complete sets of brackets on top of the columns system.
The characteristics and the advantage of the concrete sets of brackets on top of the columns system that forms by above construction technology are:
(1) the batch production production of sets of brackets on top of the columns bulk-breaking, scale error is little, and quality control on construction is good, the production efficiency height.
(2) by bulk-breaking being carried out integral assembling at precasting yard, being combined of member, globality is stronger, has significantly reduced in the high-altitude the workload of sets of brackets on top of the columns assembly unit, has improved operating efficiency; Construction quality has obtained significantly improving simultaneously.
(3) by to 1/2 integral hoisting of collecting together sets of brackets on top of the columns, reduced the lifting time, the quality control method during installation is easier, effective, workable, greatly reduces installation difficulty, has improved installation effectiveness, has saved the labour, has accelerated construction speed.
The specific embodiment
Imitative bright clear concrete sets of brackets on top of the columns bulk-breaking is prefabricated, the construction technology of integral installation,
1) produces the wooden sets of brackets on top of the columns model of a bracket sets between columns, make according to the sequential system of bulk-breaking and play head, melon arch, railway carriage or compartment arch, ten thousand arches, bucket seat, again each bulk-breaking is connected into 1/2 and collects together the sets of brackets on top of the columns system with sticking up;
2) put each single-piece and play head, melon arch, railway carriage or compartment arch, ten thousand arches, bucket seat member sample;
3) carrying out the batch production of sets of brackets on top of the columns bulk-breaking produces, should adopt lightweight concrete, in the construction of haydite concrete, require to reach the clear-water concrete requirement, no longer whitewash, prewetting in advance of haydite, the segregation that concrete is easy to generate is in time changed damaged mould, should use lightweight concrete, pre-control means is: half a day haydite is watered water-wet in advance, the time is in 30-100 second during concrete vibrating; Need with range estimation, the situation of observing haydite prevents that haydite from " floating " on concrete surface.Should strict construct A by the requirement of JGJ51-2002 technical regulation; Gently slightly, the mass metrology deviation of fine aggregate and mix is+3% to-3%; Mass metrology deviation+2% of water, cement and additive is to-2%; B; When constructing more than 5 degree, haydite need shift to an earlier date half a day and prewet.C; Adding fibroreticulate amount must be accurate.D; Concrete should should not be grown (suitable 40-50 second/single-piece) by weak point in the time of vibrating, and with trowel supernatant haydite is pressed in the concrete.E; In time cover and wet curing after the concreting moulding, curing time is no less than 7 days.F; In time change damaged mould.
In concrete sets of brackets on top of the columns prefabricated construction, in the prefabricated template of bulk-breaking, the easy displacement of mould that arch eye and volume are stopped.Pre-control means: the arch eye is being under the saturation state with the iron nail stickfast on motherboard, and the arch eye is band tip degree when making, and is inner small and outside big, is convenient to take out.The mould stopped of volume is fixing also be with iron nail fix, screens, the stuck point setting is no less than 5.Play the mould complexity of head, adopt the firm mould of glass.
4) stigmula section, bracket sets between columns, angle section connects into 1/2 to each single-piece with the concrete that sticks up separately in the sets of brackets on top of the columns system and collects together sets of brackets on top of the columns, specifically be on timber apron, accurately installing location-plate, is each bulk-breaking member respectively to play head, railway carriage or compartment arch, melon arch, ten thousand arches, bucket seat to be fixed on the corresponding position, and the template of sticking up is installed again, after checking that affirmation is errorless, build the concrete that sticks up, bulk-breakings such as this concrete and melon arch should be same kind and label, form 1/2 sets of brackets on top of the columns of collecting together.
5) connecting into the thin portion of 1/2 sets of brackets on top of the columns of collecting together repairs, mainly be that the breakage, the concrete surface that stick up junction with bulk-breaking, remove concrete surface in the template procedure that sticks up are rough, honeycomb, blibbing etc., repair and after the template that dismounting is stuck up, carry out immediately: repair with fine sand+cement mortar+white cement+108 glue.
6) can lifting 1/2 after the length of time, to collect together sets of brackets on top of the columns in place, is to carry out after component strength reaches 100%, stands up lifting from member, arrives trickle adjustment again, and whole process is all careful, and employed instrument will have soft protection, guarantees that the corner angle of member are not damaged.Will be before the lifting to all sets of brackets on top of the columns exhaustive tests, inspection comprises that single 1/2 collects together the size of the overall and bulk-breaking of sets of brackets on top of the columns, quantity, length and quantity that the afterbody reinforcing bar is reserved, whether the middle corridor bracket set on column stays the straining beam reserved opening position of putting on the shelf of establishing accurate, and whether quantity and version and quality adhere to specification.
7) each 1/2 collects together the sets of brackets on top of the columns installation in position the inside and outside, and the sets of brackets on top of the columns on same axis will be installed the corner corbel-bracket set at the negative and positive angle at two ends earlier, again with the position of two ends sets of brackets on top of the columns control the centre sets of brackets on top of the columns the position.Correction when about 1/2 collects together sets of brackets on top of the columns and installs is undertaken by the order of absolute altitude, axis, control line, proofread and correct earlier sets of brackets on top of the columns absolute altitude, proofread and correct center line again, after meeting the requirements substantially, reexamine the control line of perpendicularity, flatness and the member of member.To on the same axis and the sets of brackets on top of the columns inside and outside the same position must draw logical line to carry out secondary to proofread and correct, after all meeting the requirements, carry out an acceptance inspection, enter next procedure.
8) the sets of brackets on top of the columns reserved steel bar is with the reinforcing bar welding of pad arch bar, and this reinforcing bar welding should be adopted two-sided welding, and construction quality satisfies the requirement of national welding conditions.
9) concrete construction of pad arch bar should be adopted the concrete construction of branch axis segmentation pad arch bar, helps sets of brackets on top of the columns and in time is fixed.Template should adopt the mirror board of high-quality, and the concrete of guaranteeing to fill up arch bar reaches the effect of clear-water concrete.About each 1/2 collect together sets of brackets on top of the columns and be connected to form one and collect together complete sets of brackets on top of the columns system.