Assembling square tube shape multi-layer concrete underground garage and preparation method thereof
Technical field
The invention belongs to a kind of assembling multi-layer concrete underground garage and preparation method thereof.
Background technology
Along with the car industry fast development, car flies into common people house as swallow.But the parking lot is pitiably little, and parking difficulty has restricted the development of car industry, has also influenced the incity traffic and the appearance of the city.At present, parking lot is built all at the eyebrows and eyelashes in each big and medium-sized cities, but the old town can not build with having, and Xincheng District ground is expensive is reluctant to build, and the construction underground parking, its cost also is high.The underground garage of underground parking, particularly multilayer can't have been built again because conventional architectural design and job practices are used in the restriction of existing urban layout in the old town.Its main cause is to build the underground parking to need a cubic metre of earth heavy excavation.Fetch earth and put the slope, the occupation of land face area of construction operation is far longer than the floor space of building itself, and adopt open caisson method to construct, though need not put the slope, owing to be the on-site layering concreting, the on-the-spot operations such as reinforcing bar, a template, concreting, maintenance of compiling repeat repeatedly to carry out, inner frame construction has a strong impact on the open caisson construction operation, complex process, long in time limit, the cost height.And its price of the underground garage of steel work is expensive especially.
Summary of the invention
The invention provides a kind of assembling square tube shape multi-layer concrete underground garage and preparation method thereof, take up an area of big, complicated, the low high problem of valency of constructing of face to solve present garage.The technical scheme that the present invention takes is: comprise concrete foundation, establishing the equipment room that the mutual corner connection of precast member for reinforcing bar concrete of unbonded prestressing tendon makes in four is connected with this concrete foundation upper fixed, the square tube wall tightens together by docking with this equipment room top, this square tube wall includes horizontal cross by piece, the vertical vertically mutual corner connection combine and assemble of prefabricated units side fascia of unbonded prestressing tendon tightens together, butt joint tightens together between each layer, in establish unbonded prestressing tendon the precast member for reinforcing bar concrete parking beam fix with the corresponding preformed hole cross-under of every layer of square tube wall, in establish unbonded prestressing tendon precast member for reinforcing bar concrete transhipment stop platform connect fixing with the square tube corner that is positioned at the place, ground, in establish unbonded prestressing tendon the right wall of precast member for reinforcing bar concrete transhipment layer and the left wall of transhipment layer dock with the square tube wall respectively fixing, in establish unbonded prestressing tendon precast member for reinforcing bar concrete transhipment layer lamina tecti and the right wall of transhipment layer with transport a layer left corner and connect fixing.
Preparation method of the present invention comprises the following steps:
(1) adopts corner connection method combine and assemble punching press square spade
(1), the no bonding prestress muscle at 4 pre-system structure spare Blade angles is combined into the punching press square spade of four frame types with ground tackle and steel angle anchor plate;
(2), breast boards, fixedly jack are installed;
(2), adopt corner connection method combine and assemble square tube wall
(1), 1 block of side fascia is pressed on the jack on the punching press square spade, and the screw thread ground tackle of butt joint ground tackle will its longitudinal rib upper end be installed, the common ground tackle in the lower end butt joint ground tackle, stretch-draw screw thread ground tackle is temporarily fixed at side fascia on the punching press square spade;
(2), second block of side fascia is pressed on the punching press square spade, and after with first block of side fascia vertical sealing mat being installed, ground tackle is installed after the corresponding horizontal bar of two blocks of side fascias is worn angle anchor plate corresponding aperture by top step (1);
(3), by the 3rd, the 4th block of side fascia of top step (2) assembling;
(4), 4 side fascia longitudinal ribs are withdrawed from punching press square spade preformed hole, stretch-draw is fastening; Excise unnecessary muscle head, ground tackle stretch-draw on the horizontal bar is fastening;
(5), the square tube wall props up template for four jiaos, concrete perfusion, shutoff angle anchor plate and ground tackle, first floor square tube wall combine and assemble is finished;
(3), adopt docking calculation that each layer square tube wall longitudinal rib is coupled together;
(1), the longitudinal rib of second layer side fascia is installed the butt joint ground tackle, the screw thread ground tackle of butt joint ground tackle is installed in its longitudinal rib upper end, the common ground tackle and the adapter sleeve of butt joint ground tackle installed in the lower end, and with the screw thread ground tackle of corresponding first floor square tube wall wallboard longitudinal rib, connect two ground tackles with the adapter sleeve spiral, fill sealing agent, stretch-draw is fastening;
(2), install equally the second layer second and third, four blocks of side fascias;
(3), when last layer square tube wall longitudinal rib docks with ground tackle with the corresponding longitudinal rib of following one deck square tube wall, except that first pretensioning was fixing, other were temporary fixed, treat the installation of angle anchor plate, after horizontal tension of prestressed tendon is fastening, the fastening longitudinal rib of stretch-draw again;
(4), adopt cross-under method combine and assemble parking beam;
(1), the parking beam presstressed reinforcing steel is worn the corresponding preformed hole of the side fascia that is combined into the square tube wall, fix with ground tackle stretch-draw;
(2), excise the muscle head, with concrete shutoff preformed hole;
(5), open caisson construction
(1), the artificial shoveling, grab bucket is fetched earth, square spade jack punching press soil layer,
(2), first floor square tube wall is sunk to underground,
(3), repeat (two), (three), the operation of (four) step, with square tube wall and parking beam combine and assemble to underground top layer;
(6), transhipment layer combine and assemble;
(1), transhipment stop platform is installed
The minor face of two blocks of side fascias is installed steel angle anchor plate and ground tackle, and stretch-draw is fastened to design stress; Angle anchor plate preformed hole is worn the corresponding longitudinal rib of underground top layer square tube wall, withholds on the top layer square tube wall that parking beam is installed, and stretch-draw is fastening;
(2), the left and right wall of transhipment layer installed;
To anchor plate and ground tackle, stretch-draw is fastened to design stress with two side fascia horizontal bar established angles; And its longitudinal rib installed the butt joint ground tackle, and its upper end is installed screw thread ground tackle, lower end in butt joint ground tackle common ground tackle and adapter sleeve in the butt joint ground tackle is installed, and with the screw thread ground tackle butt joint of the longitudinal rib of corresponding underground top layer square tube wall, stretch-draw is fastening respectively;
(3), transhipment layer lamina tecti installed
(a), with the minor face established angle of a side fascia to anchor plate and ground tackle, stretch-draw is fastened to design stress;
(b), again it is installed in the middle part of the left wall of transhipment layer, the right wall of transhipment layer, its two ends angle anchor plate is worn the corresponding longitudinal rib of this two wallboard and is withheld on the wall of the left and right sides, fixes with the vertical muscle corner connection of this two wallboard;
(c), about two blocks of side fascias are divided, add mutual corresponding horizontal bar of sealing mat and the middle part that is installed in left and right sides wall and connect, stretch-draw is fastening;
(d), two side fascia presstressed reinforcing steels fix with corresponding transhipment layer left side wall, the vertical muscle corner connection of the right wall of transhipment layer, the angle anchor plate is worn earlier the left wall of transhipment layer, the right wall longitudinal rib of transhipment layer respectively, wears the horizontal bar of back two side fascia correspondences again;
(7), bottom of the reservior and equipment room Equipment Foundations are made:
(1), puts concrete pad, the jack on the taking-up punching press square spade, excavation equipment foundation pit;
(2), clear up bottom of the reservior and foundation pit, concreting bed course;
(3), tie up bottom of the reservior and foundation pit reinforcing bar, concreting.
It is non-caked in concrete that technical scheme of the present invention makes full use of unbonded prestressing tendon, can slide.By very heavy stretch-draw, ground tackle locking makes the unbonded prestressing tendon of concrete component produce powerful tensile stress.Reaction force that this power produces acts on the interface and the prefabricated units itself of prefabricated units combine and assemble, makes it bear compressive stress.This power meets the stressed principle of concrete resistance to compression greater than tension.By ground tackle and very heavy accurate stretch-draw locking, it is accurate, error free to reach concrete prefabricated element combine and assemble size, the intensity height of its building structure combine and assemble.
Square tube shape underground garage design of building structures has the following advantages
1, its structure of multi-layer concrete underground garage all is made up of concrete prefabricated element, and prefabricated units can be produced in batches in factory, and the output height, quality is good, cost is low, efficient energy-saving.
2, the construction of assembling concrete prefabricated units is simple, convenient at the scene, speed is fast, need not large-scale hanging device.
3, adopt new method and proprietary material, facility, equipment combine and assemble concrete prefabricated element, building structure intensity is big, and the member group is to the precision height, and is safe and reliable.
4, open caisson construction can be built underground garage at narrow and small ground construction, uses the punching press square spade, promptly can accomplish cubic metre of earth zero backbreaking, and can guarantee the square tube shape exterior wall level that makes up, even, vertical subsidence again.
The square tube shape multi-layer concrete underground garage of the present invention design can be in narrow and small location, incity, city, old parking lot, and outside the buildings such as enterprise, hospital, office, hotel, market, in the institute, the roadside carries out construction.Under each surface area of 6 meters of length and width, can build every layer and stop 2, the underground parking garage that underground 11 layers of parking are 20.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a vertical view of the present invention;
Fig. 3 is parking beam of the present invention and the cross-under of square tube wall, corner connection structural representation.
Fig. 4 A is the structural representation of side fascia of the present invention;
Fig. 4 B is the structural representation of parking beam of the present invention;
Fig. 4 C is the structural representation of the basil of the present invention;
Fig. 4 D is the structural representation of steel angle anchor plate of the present invention;
Fig. 4 E is the structural representation of ground tackle of the present invention;
Fig. 4 F is the structural representation that ground tackle is docked in the present invention;
Fig. 4 G is the structural representation of steel angle anchor plate of the present invention.
Fig. 5 is a partial structurtes schematic diagram of the present invention, shows the docking structure schematic diagram.
The specific embodiment
Comprise concrete foundation 8, establishing the equipment room 7 that the mutual corner connection of precast member for reinforcing bar concrete of unbonded prestressing tendon makes in four is connected with this concrete foundation upper fixed, square tube wall 5 tightens together by docking with this equipment room top, this square tube wall includes horizontal cross by 4, the vertical vertically prefabricated units side fascia 501 mutual corner connection combine and assemble of unbonded prestressing tendon tighten together, butt joint tightens together between each layer, in establish unbonded prestressing tendon precast member for reinforcing bar concrete parking beam 6 fix with the corresponding preformed hole cross-under of every layer of square tube wall, in establish unbonded prestressing tendon precast member for reinforcing bar concrete transhipment stop platform 4 connect fixing with the square tube corner that is positioned at the place, ground, in establish unbonded prestressing tendon the right wall 2 of precast member for reinforcing bar concrete transhipment layer and the left wall 3 of transhipment layer dock with the square tube wall respectively fixing, in establish unbonded prestressing tendon precast member for reinforcing bar concrete transhipment layer lamina tecti 1 and the right wall 2 of transhipment layer with transport layer left wall 3 corner connection and fix.
Butt joint of the present invention, cross-under, corner connection method are specific as follows:
(1) butt joint:
(1), unbonded prestressing tendon is set in concrete prefabricated element;
(2), the butt joint ground tackle 9 making, be provided with common ground tackle 901 in the adapter sleeve, screw thread ground tackle 902 is connected with these adapter sleeve 903 internal threads; Shown in Fig. 4 F.
(3), ground tackle 10 is installed on the unbonded prestressing tendon of a concrete prefabricated element one end, shown in Fig. 4 E, the other end is installed the screw thread ground tackle in the butt joint ground tackle, stretch-draw is fastening;
(4), at another concrete prefabricated element unbonded prestressing tendon one end of butt joint with it common ground tackle and the adapter sleeve that docks in the ground tackle is installed, screw thread ground tackle in the other end installation butt joint ground tackle;
(5), the common ground tackle that the screw thread ground tackle in the butt joint ground tackle on the unbonded prestressing tendon of a concrete prefabricated element is docked concrete prefabricated element with another docks mutually by adapter sleeve;
(6), the screw thread ground tackle in the butt joint ground tackle of fastening another concrete prefabricated element of stretch-draw, the butt joint of two prefabricated units is combined.
(2) cross-under
(1), unbonded prestressing tendon is set in concrete prefabricated element;
(2), another concrete prefabricated element in combine and assemble is provided with preformed hole;
(3), the unbonded prestressing tendon of concrete prefabricated element is worn the preformed hole of another concrete prefabricated element, the unbonded prestressing tendon two ends are fastening with ground tackle stretch-draw, and its connection is tightened together.
(3) corner connection
(1), unbonded prestressing tendon is set in concrete prefabricated element;
(2), angle anchor plate 11 is made: making has angle and wears the anchor plate in muscle hole; Shown in Fig. 4 D and Fig. 4 G;
(3), the unbonded prestressing tendon in each prefabricated unit passed steel angle anchor plate wear the muscle hole, with the fastening presstressed reinforcing steel of ground tackle stretch-draw, make each concrete prefabricated element make certain angle each other and connect.
The preparation method of assembling square tube shape multi-layer concrete underground garage of the present invention:
(1) adopts corner connection method combine and assemble punching press square spade
(1), the no bonding prestress muscle at the angle of pre-system structure spare Blade shown in 4 Fig. 4 C 12 is combined into the punching press square spade of four frame types with steel angle anchor plate shown in ground tackle shown in Fig. 4 E and Fig. 4 G.
(2), breast boards, fixedly jack are installed.
(2), adopt corner connection method combine and assemble square tube wall
(1), 1 block of side fascia shown in Fig. 4 A is pressed on the jack on the punching press square spade, and the screw thread ground tackle of ground tackle will be docked shown in the installation drawing 4F of its longitudinal rib upper end, common ground tackle in the ground tackle of butt joint shown in the installation drawing 4F of lower end, stretch-draw screw thread ground tackle is temporarily fixed at side fascia on the punching press square spade;
(2), second block of side fascia is pressed on the punching press square spade, and after with first block of side fascia vertical sealing mat being installed, the corresponding horizontal bar of two blocks of side fascias is worn ground tackle shown in the installation drawing 4E behind the corresponding aperture of angle anchor plate shown in Fig. 4 D by top step (1);
(3), by the 3rd, the 4th block of side fascia of top step (2) assembling;
(4), 4 side fascia longitudinal ribs are withdrawed from punching press square spade preformed hole, stretch-draw is fastening; Excise unnecessary muscle head, ground tackle stretch-draw on the horizontal bar is fastening;
(5), the square tube wall props up template for four jiaos, concrete perfusion, shutoff angle anchor plate and ground tackle, first floor square tube wall combine and assemble is finished;
(3), adopt docking calculation that each layer square tube wall longitudinal rib is coupled together;
(1), shown in the longitudinal rib installation drawing 4F of second layer side fascia, docks ground tackle, the screw thread ground tackle of butt joint ground tackle is installed in its longitudinal rib upper end, the common ground tackle and the adapter sleeve of butt joint ground tackle installed in the lower end, and with the screw thread ground tackle of corresponding first floor square tube wall wallboard longitudinal rib, connect two ground tackles with the adapter sleeve spiral, fill sealing agent, stretch-draw is fastening;
(2), install equally the second layer second and third, four blocks of side fascias;
(3), when last layer square tube wall longitudinal rib docks with ground tackle with the corresponding longitudinal rib of following one deck square tube wall, except that first pretensioning was fixing, other were temporary fixed, treat the installation of angle anchor plate, after horizontal tension of prestressed tendon is fastening, the fastening longitudinal rib of stretch-draw again;
(4), adopt cross-under method combine and assemble parking beam;
(1), parking beam presstressed reinforcing steel shown in Fig. 4 B is worn the corresponding preformed hole of the side fascia that is combined into the square tube wall, fix with 10 stretch-draw of ground tackle shown in Fig. 4 E;
(2), excise the muscle head, with concrete shutoff preformed hole;
(5), open caisson construction
(1), the artificial shoveling, grab bucket is fetched earth, square spade jack punching press soil layer,
(2), first floor square tube wall is sunk to underground,
(3), repeat (two), (three), the operation of (four) step, with square tube wall and parking beam combine and assemble to underground top layer.
(6), transhipment layer combine and assemble;
(1), transhipment stop platform is installed.
With ground tackle shown in steel angle anchor plate shown in the minor face installation drawing 4D of two blocks of side fascias shown in Fig. 4 A and Fig. 4 E, stretch-draw is fastened to design stress; Angle anchor plate preformed hole is worn the corresponding longitudinal rib of underground top layer square tube wall, withholds on the top layer square tube wall that parking beam is installed, and stretch-draw is fastening;
(2), the left and right wall of transhipment layer installed.
With ground tackle shown in angle anchor plate shown in two side fascia horizontal bar installation drawing 4D shown in Fig. 4 A and Fig. 4 E, stretch-draw is fastened to design stress; And its longitudinal rib installed the butt joint ground tackle, and its upper end is installed screw thread ground tackle, lower end in butt joint ground tackle common ground tackle and adapter sleeve in the butt joint ground tackle is installed, and with the screw thread ground tackle butt joint of the longitudinal rib of corresponding underground top layer square tube wall, stretch-draw is fastening respectively;
(3), transhipment layer lamina tecti installed
(a), with ground tackle shown in angle anchor plate shown in the minor face installation drawing 4D of a side fascia shown in Fig. 4 A and Fig. 4 E, stretch-draw is fastened to design stress;
(b), again it is installed in the middle part of the left wall of transhipment layer, the right wall of transhipment layer, its two ends angle anchor plate is worn the corresponding longitudinal rib of this two wallboard and is withheld on the wall of the left and right sides, fixes with the vertical muscle corner connection of this two wallboard;
(c), about two blocks of side fascias are divided, add mutual corresponding horizontal bar of sealing mat and the middle part that is installed in left and right sides wall and connect, stretch-draw is fastening;
(d), two side fascia presstressed reinforcing steels fix with corresponding transhipment layer left side wall, the vertical muscle corner connection of the right wall of transhipment layer, the angle anchor plate is worn earlier the left wall of transhipment layer, the right wall longitudinal rib of transhipment layer respectively, wears the horizontal bar of back two side fascia correspondences again;
(7), bottom of the reservior and equipment room Equipment Foundations are made:
(1), puts concrete pad, the jack on the taking-up punching press square spade, excavation equipment foundation pit;
(2), clear up bottom of the reservior and foundation pit, concreting bed course;
(3), tie up bottom of the reservior and foundation pit reinforcing bar, concreting.
Square tube shape garage access program:
1, bicycle parking.Automobile drives transhipment layer on the ground into, and is parked on mobile trolley used on the hoist.Safety door is closed, and hoist sinks, and is parked in the storehouse layer of having vacant position.Hydraulic stem on the hoist is with the mobile trolley used empty wagons position that pushes.
2, pick up the car.Bicycle parking people plug-in card, hoist move to storehouse, bicycle parking position layer.The hoist hydraulic stem stretches out to be moved on the hoist mobile trolley used.Hoist rises up into ground transhipment layer.Safety door is opened, and the driver leaves the transhipment layer with car.