Afforestation Landscape rear pouring tape construction method under antecedent condition
Technical field
The present invention relates to a kind of Afforestation Landscape rear pouring tape construction method under antecedent condition, belong to technical field of building construction.
Background technology
In today that urban construction develops rapidly, construction unit is usually in order to build construction area environment in advance, the sale of building is promoted with this, in skyscraper main structure construction process, before the closure of high-rise periphery post-cast strip is built, backfill soil is carried out in advance on basement roof, the construction of Afforestation Landscape, its construction and open hour in advance build the time in post-cast strip designing requirement far away, therefore in order to ensure the pouring quality of Afforestation Landscape basement roof structural safety under leading condition of construction and later stage post-cast strip, it it is a technical barrier in the realm of building construction.
Summary of the invention
The purpose of patent of the present invention is for an above-mentioned practical construction technology difficult problem, provides a kind of and high-rise periphery post-cast strip adopts interim closing, later stage in advance build the concrete Afforestation Landscape in post-cast strip rear pouring tape construction method under antecedent condition.
It is an object of the invention to be achieved through the following technical solutions: a kind of Afforestation Landscape rear pouring tape construction method under antecedent condition, it is characterized in that, comprise the following steps:
Step 1, after basement roof template framed bent is set up, at the bottom plate rear pouring tape both sides arranged type bracing members of the top board post-cast strip of basement and basement; Basement roof is carried out concreting, and after basement roof concreting, when intensity reaches template framed bent detachable condition, room roof plate template framed bent, only conservative bracing members are descended in disposable dismounting fully;
Before step 2, Afforestation Landscape region basement roof do waterproof and backfill soil, retaining wall is built by laying bricks or stones in the both sides, top board post-cast strip not blocked, top, top board post-cast strip arranges cast-in-place concrete cover plate, vertical pre-buried corrugated tube on cast-in-place concrete cover plate, and by closing suitable for reading for pre-buried corrugated tube;
Step 3, set up the template bent frame system at position, top board post-cast strip;
After step 4, Afforestation Landscape complete, open suitable for reading for the pre-buried corrugated tube of closure, by the corrugated tube that top, top board post-cast strip is reserved, as the use of top board post-cast strip (11) casting concrete blanking conduit and the mouth that vibrates, top board post-cast strip casting concrete is closed;
Step 5, bottom plate rear pouring tape is carried out casting concrete;
Step 6, wait that building complete top board post-cast strip concrete strength reaches 100%, the template bent frame system of top board post-cast strip is removed, and the type steel support that top board post-cast strip, bottom plate rear pouring tape both sides are arranged in advance is cut off, it is finally completed Afforestation Landscape post-cast strip after-construction method under antecedent condition.
In described step 1, before basement bottom board armored concrete is built or before initial set, shifting to an earlier date pre-buried pre-embedded steel slab on the basement bottom board surface of both sides, post-cast strip, it is simple to be welded and fixed with pre-embedded steel slab on the downside of type steel support, pre-embedded steel slab is arranged at distance bottom plate rear pouring tape dual-side 200mm place;
Shifting to an earlier date pre-buried termination steel plate on basement roof roof plate template reserved opening, termination steel plate is arranged at distance dual-side 200mm place, top board post-cast strip; Before concrete roof is built, it is connected fixing with the pre-buried termination Plate Welding of basement roof on the upside of type steel support;
Pre-buried termination steel plate part at basement roof is elongated arranges dark beam, together builds with basement roof, processes as to the roof reinforcement of both sides, post-cast strip.
In described step 2, the height of retaining wall is between 100��200mm, closely knit to guarantee later stage top board post-cast strip casting and compacting of concrete;
When concrete cover template construction, the top of top board post-cast strip (11) structural beams position be must be provided with installing the reserving hole of corrugated tube, and strictly control corrugated tube position and the reserving hole location pre-set and consistent size; To corrugated tube lower nozzle card groove location, cover plate reinforcing bar is adopted to carry out the fixing after-pouring cover plate concrete of colligation;
In backfilling of earthwork process, on-the-spot earth and foreign material are forbidden to fall in corrugated tube and top board post-cast strip, the employing tying suitable for reading closure of corrugated tube.
In described step 4, after Afforestation Landscape has been constructed, by the time requirement of design code, top board post-cast strip concrete is built, specifically includes following steps:
1) set up at the bottom template framed bent of top board post-cast strip, downside, top board post-cast strip has been carried out secondary dabbing cleaning, and with after giant flushing, carries out bed die closure;
2) open corrugated tube upper seal, corrugated tube inwall is rinsed moistening again;
3) utilizing corrugated tube as casting concrete blanking conduit and the mouth that vibrates, top board post-cast strip is carried out casting concrete, it builds thickness must be suitable for reading only to corrugated tube.
In described step 6, when top board post-cast strip intensity reaches 100%, first remove top board post-cast strip formwork bracing system, after type steel support is cut off.
The inventive method advanced person's science, pass through the present invention, adopt type steel support hardened system, post-cast strip structure on two sides top board being reinforced in advance, and uses " cast-in-situ steel reinforced concrete cover plate+pre-buried corrugated tube " construction method on top, top board post-cast strip, the employing tying suitable for reading of pre-buried corrugated tube seals, top board post-cast strip is closed temporarily in advance, after Afforestation Landscape main body completes, make casting concrete blanking conduit by reserved corrugated tube, top board post-cast strip is carried out pouring construction.
It is an advantage of the current invention that:
1) type steel support system is set separately in both sides, post-cast strip, when basement roof support reaches collapsible die condition, disposable form removal bent frame system, only conservative steel supporting system, roof support with reinforced concrete deadweight is born by type steel support system, and the every load after top Afforestation Landscape backfill soil, both save construction cost, in turn ensure that the leading construction of backfill soil, Afforestation Landscape.
2) type steel support both ensure that the safety of xoncrete structure, the later stage cut off and after can be recycled.
3) retaining wall had both played and had blocked the backfill earthwork, serves again and supports the effect shelving interim cast-in-place concrete cover plate.
4) cast-in-situ steel reinforced concrete cover plate, had both met the needs that backfilling of earthwork and landscape planting are constructed in advance in advance, has stopped again not close post-cast strip and the hidden danger of seepage occurs.
5) pre-buried vertical corrugated tube is build the concrete blanking in post-cast strip the later stage to provide convenience with vibrating, it is ensured that the degree of compaction of post-cast strip concreting and construction quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure, 1 type steel support, 2 pre-embedded steel slabs, 3 termination steel plates, 4 corrugated tubes, 5 cast-in-place concrete cover plates, 6 retaining walls, 7 cover plate reinforcing bars, 8 basement roofs, 9 basement bottom boards, 10 bottom plate rear pouring tapes, 11 top board post-cast strips, 12 reserving holes.
Detailed description of the invention
Afforestation Landscape rear pouring tape construction method under antecedent condition, mainly comprises the steps that
Step 1, after basement roof template framed bent is set up, at both sides, basement roof post-cast strip 11 and basement bottom plate rear pouring tape 10 both sides arranged type bracing members 1, basement roof 8 is carried out concreting, after concreting, when intensity reaches collapsible die condition, room roof plate template framed bent is descended in disposable dismounting fully, only conservative bracing members 1;
Before step 2, Afforestation Landscape region basement roof 8 do waterproof and backfill soil, retaining wall 6 is built by laying bricks or stones in the both sides, top board post-cast strip 11 not blocked, top arranges cast-in-place concrete cover plate 5, and vertical pre-buried corrugated tube 4, by pre-buried corrugated tube 4 closure suitable for reading, the impurity being prevented effectively from the external world falls in top board post-cast strip 11 by pre-buried corrugated tube 4, it is achieved top board post-cast strip 11 carries out interim closing in advance;
Step 3, set up the template bent frame system at position, top board post-cast strip 11;
After step 4, Afforestation Landscape have been constructed, by top board post-cast strip 11 off-period of designing requirement, by reserved corrugated tube 4, as casting concrete blanking conduit and the use vibrated, to top board post-cast strip 11 casting concrete, it is achieved post-cast strip top board 11 concreting is closed;
Step 5, bottom plate rear pouring tape 10 is carried out casting concrete;
Step 6, wait to build complete top board post-cast strip 11, concrete strength reaches 100%, the template bent frame system of top board post-cast strip 11 is removed, and the type steel support 1 that top board post-cast strip 11, bottom plate rear pouring tape 10 both sides are arranged in advance is cut off, it is finally completed Afforestation Landscape post-cast strip after-construction method under antecedent condition.
Further, the present invention is specifically refined as:
1, the construction of type steel support system.
Before basement roof 8 is built, basement roof template framed bent is when setting up, in both sides, the top board post-cast strip 11 lower disposed type steel support 1 of basement roof 8.
1), the selection of type steel support 1 calculate according to load and determine, distance bottom plate rear pouring tape 10 dual-side 200mm;
2), on the downside of type steel support 1 with the connection of basement bottom board 9: before basement bottom board 9 armored concrete is built or before initial set, pre-buried pre-embedded steel slab 2 in advance, pre-embedded steel slab 2 is by welding anchoring Bar Anchorage in basement bottom board 9, and type steel support 1 and pre-embedded steel slab 2 are welded to connect;
3), on the upside of type steel support 1 with the connection of basement roof 8: adopting termination steel plate 3 and type steel support 1 to be welded to connect, termination steel plate 3 is by welding anchoring Bar Anchorage in basement roof 8;
4) making of type steel support: the making cutting length according to the strict control type bracing members 1 of the actual clear height of basement structure, the cutting length of type steel support 1 cannot be less than the actual clear spacing between type steel support about 1 embedded part, that is, the cutting length of type steel support 1 cannot be less than the actual clear spacing between pre-embedded steel slab 2, termination steel plate 3; The length of every root type bracing members (1), it is necessary to be accurate to a little.
5) installation of type steel support 1:
In a, roof plate template installation process, reserved support termination, top steel plate openings position is determined in the position according to base plate pre-embedded steel slab 2 location, and guarantees center, hole and bottom embedded part (pre-embedded steel slab 2) center vertical line up and down.
B, type steel support 1 is lifted, is welded and fixed, installation process guarantees type steel support 1 perpendicularity, it is to avoid after concrete roof is built, form type steel support 1 eccentric compression;
6) consolidation process of the basement roof of both sides, top board post-cast strip 11:
After type steel support 1 installation, in the basement roof 8 at type steel support 1 top, elongated along the position of the type steel support 1 on limit, top board post-cast strip 11 dark beam is set, together builds with basement roof 8;
2, cast-in-place cover plate and vertical corrugated tube Embedment Construction on the upside of top board post-cast strip 11.
1) after basement roof 8 concreting completes, the height according to landscape construction backfilling of earthwork, it is determined that the height of the thickness of cast-in-place cast-in-place concrete cover plate 5 and corrugated tube 4 on the upside of top board post-cast strip 11;
2) before waterproof construction, build retaining wall 6 by laying bricks or stones along both sides, top board post-cast strip 11, be highly between 100��200mm, to guarantee that later stage top board post-cast strip 11 pours dense. Both sides, top board post-cast strip 11 are conscientiously cleared up before building by laying bricks or stones by retaining wall 6, dabbing work, and by owner, supervisor combine examination.
3) cast-in-place concrete cover plate 5 shutterings-supported construction: on the upside of retaining wall 6, arrange 50 �� 100 along direction, top board post-cast strip 11, the wooden a tree, used in making timber for boats of spacing 300 as support, wood a tree, used in making timber for boats top completely spreads 18mm template along direction, top board post-cast strip 11;
4), during cast-in-place concrete cover plate 5 system template construction, it is consistent with reserving hole 12 location dimension offered in advance strictly to control corrugated tube 4 position, and top, structural beams position must be provided with reserving hole 12.
5) corrugated tube 4 is fixing: in the process of binding of cast-in-place concrete cover plate 5 cover plate reinforcing bar 7, adopts cover plate reinforcing bar 7 to carry out colligation corrugated tube 4 lower nozzle card groove location and fixes.
6) process of corrugated tube 4 mouth of pipe: view returns soil construction, for preventing on-the-spot earth and foreign material in backfilling of earthwork process from falling in top board post-cast strip 11 by corrugated tube 4, and it is easy to the inspection before later stage top board post-cast strip 11 is built and cleaning, the height of corrugated tube 4 is not less than backfilling of earthwork finished surface 20cm, before backfilling of earthwork, plastic sheeting tying is adopted to block corrugated tube 4 mouthfuls.
3, the concrete closure construction in post-cast strip.
After landscape construction completes, build top board post-cast strip 11 concrete by the time requirement of design code.
1) set up at top board post-cast strip 11 template framed bent, bed die closure before, rely on template framed bent operating platform is set, downside, top board post-cast strip 11 is carried out secondary dabbing cleaning, and is rinsed with giant. Bed die closure must carry out after top board post-cast strip 11 dabbing and flushing.
2) before the concreting of post-cast strip, open corrugated tube 4 upper seal, corrugated tube 4 inwall is rinsed moistening again.
3) utilizing corrugated tube (4) as casting concrete blanking conduit and the mouth that vibrates, top board post-cast strip 11 is carried out casting concrete, it builds thickness must be suitable for reading only to corrugated tube 4, and guarantees that casting and compacting of concrete is closely knit.
4, the cutting off of type steel support system.
When top board post-cast strip 11 intensity reaches 100%, first remove top board post-cast strip 11 formwork bracing system, after type steel support 1 is cut off. It is finally completed the closed pouring after settlement after-construction method under view antecedent condition.