The shock isolating pedestal brick is mixed fixing structure and support and change method is installed
Technical field
The present invention relates to a kind of shock isolating pedestal brick and mix fixing structure and support and change method is installed, mainly utilize the cylindrical prefabricated pin key beam of concrete filled steel tube that shock insulation is carried out on the basis and process, belong to the seismic hardening field.
Background technology
The pin key beam is equivalent to be inserted in the pin key in the load bearing wall, and the vertical load of structure is passed to the shoulder beam by it.Pin key beam section in the conventional method is shaped as rectangle, adopts cast-in-place concrete construction technique.For guaranteeing that the pin key beam is connected with the shoulder beam, stay bar splice outward; For guaranteeing construction, template installation, it is larger that pin key beam dimension of opening should be opened.There is following shortcoming in it:
1, the masonry structure before the eighties is set up defences without antidetonation, do not establish constructional column and collar tie beam, generally there is not the ground collar tie beam yet, and the intensity of brick and mortar is usually lower, for guaranteeing to transmit reliably the superstructure load, can not cause again because of brick wall pressure-bearing deficiency, cause structural deterioration, so the common spacing of pin key beam is less, generally establish a pin key beam every 500~700mm, and pin key deck-siding 250mm, the common wide 300mm that is not less than in hole, the hole is intensive or the method that punches is improper, can cause wall body slit to be communicated with, and causes structural deterioration.
2, the pin key beam is Cast-in-place concrete, sometimes adopts the interval to punch for guaranteeing construction safety, in batches the method for pouring construction.Long because of the concrete cure cycle, this has just affected construction speed greatly, causes engineering not construct continuously.
3, consider in the design that the pin key beam is connected with steel concrete shoulder the reliable of beam, generally will get rid of in advance anchor bar, the more formwork supporting plate difficulty that causes of these dowel quantity.
4, because pin key beam hole is offered and can't be accomplished very standard, but pin key beam concrete must be full of the hole, can not stay the space, also causes difficulty to concrete construction.
5, because the quantity of pin key beam is a lot, and problem is also a lot of in the construction, has had a strong impact on the quality control difficulty of base isolation reinforcement and prolonged construction period.This is key and Key technique problem that Seismic Isolation of Isolation Layer arranges.
Summary of the invention
The present invention is in order to overcome the deficiency of conventional method, having proposed a kind of shock isolating pedestal brick mixes fixing structure and support and change method is installed, its installation that can solve better shock isolating pedestal in the base isolation with insert a difficult problem, a kind of simple in structure, economical rationality, actual effectively Shockproof reinforcing method are provided.
To achieve these goals, the present invention has taked following technical scheme:
A kind of shock isolating pedestal brick is mixed fixing structure, comprise ground collar tie beam, prefabricated pin key beam, upper shoulder beam, lower shoulder beam, upper sealing plate, lower shrouding, shock isolating pedestal, wherein, prefabricated pin key beam is divided into prefabricated pin key beam and lower prefabricated pin key beam, the load bearing wall of collar tie beam below, described ground is divided into upper and lower two parts, is provided with shock isolating pedestal between upper and lower two parts load bearing wall; Be arranged at intervals with prefabricated pin key beam hole on the load bearing wall of top, be inserted with prefabricated pin key beam in the hole; Be arranged at intervals with prefabricated pin key beam hole on the load bearing wall of bottom, be inserted with lower prefabricated pin key beam in the hole; Upper and lower prefabricated pin key beam all stretches out the load bearing wall both sides; Many upper prefabricated pin key beams that stretch out connect as one by upper shoulder beam, and many lower prefabricated pin key beams that stretch out connect as one by lower shoulder beam; Be respectively arranged with upper sealing plate and lower shrouding between shock isolating pedestal and the upper and lower shoulder beam.
Further, described prefabricated pin key beam is the cylindrical prefabricated pin key beam of concrete filled steel tube.
Further, described prefabricated pin key joist steel thickness of pipe wall 4~5mm, external diameter is 200mm, steel pipe length is that the load-bearing wall thickness adds 120mm.
Above-mentioned shock isolating pedestal brick is mixed the installation support and change method of fixing structure, comprises the steps:
Step 1: excavation foundation;
Step 2: select OB-255A diamond water to bore auger, the top load bearing wall below brick mix structure ground collar tie beam is opened prefabricated pin key beam hole, and the diameter that punches is 230mm;
Step 3: install prefabricated pin key beam, in the space, pour into A level modified epoxy structure glue behind the location, guarantee prefabricated pin key beam and body of wall close contact;
Step 4: take on beam on the perfusion steel concrete, it reliably is connected with upper prefabricated pin key beam;
Step 5: adopt outsourcing C30 concrete to carry out underpin;
Step 6: select OB-255A diamond water to bore auger, open prefabricated pin key beam hole at the bottom load bearing wall, the diameter that punches is 230mm;
Step 7: lower prefabricated pin key beam is installed, in the space, is poured into A level modified epoxy structure glue behind the location, guarantee prefabricated pin key beam and body of wall close contact;
Step 8: take on beam under the perfusion steel concrete, it reliably is connected with lower prefabricated pin key beam;
Step 9: opening the installation shock isolating pedestal under steel concrete shoulder beam and the steel concrete between the shoulder beam and beating the hole of building upper sealing plate and lower shrouding;
Step 10: shock isolating pedestal is installed and is built upper sealing plate and lower shrouding;
Step 11: the continuous body of wall between the shoulder beam under shoulder beam and the steel concrete on the cutting disassembling steel concrete, separate the contact of upper and lower part wall body structure, generate Seismic Isolation of Isolation Layer;
Step 12: the pipeline that changes between Seismic Isolation of Isolation Layer is flexible the connection by former rigid connection;
Step 13: build passage and inspection eye that shock isolating pedestal is safeguarded and changed.
Wherein, the OB-255A diamond water that (1) is selected bores auger, also claims Opel universal type auger, bore diameter 15~255mm, and input power 4250W, idle speed 580r/min, speed of fulfiling hole is fast, and is harmless to body of wall, greatly reduced the size that punches.(2) selecting the prefabricated pin key beam of concrete filled steel tube of 200mm external diameter, is up to standard in order to guarantee pin key beam appearance and size tolerance, so that install and connection construction, guarantees pin key beam and body of wall close contact.(3) pin key joist steel pipe adopts the perfusion of C30 pea gravel concrete.(4) the prefabricated pin key beam of concrete filled steel tube is in advance prefabricated by professional factory for prefabrication.Press the drawing location in the engineering construction, line boring blows off graying in the hole, and prefabricated pin key beam is installed, and requires pin key beam position placed in the middle, and 60mm is stayed on every limit, anchors in the shoulder beam, guarantees that the pin key beam is connected with the shoulder beam, can install while holing, continuously construction operation.
The invention has the beneficial effects as follows: adopt shock isolating pedestal brick of the present invention to mix fixing structure and support and change method is installed to make structural strength higher, globality is better, it is faster to construct, and can solve well shock isolating pedestal and install and to underpin problem, reach safety, reliably, purpose easily and efficiently.
Description of drawings
Fig. 1 is that shock isolating pedestal is laid and underpined profile;
A-A sectional drawing among Fig. 1 among Fig. 2;
Fig. 3 is that Seismic-Isolated Masonry Buildings is reinforced drawing;
Among the figure, 1-ground collar tie beam; The upper prefabricated pin key beam of 2-; The upper shoulder of 3-beam; The 4-upper sealing plate; The 5-shock isolating pedestal; Shrouding under the 6-; Prefabricated pin key beam under the 7-; Take on beam under the 8-; The 9-underpin; The 10-base plate.
The specific embodiment
Shown in Fig. 1~3, the specific embodiment of the present invention is as follows:
A kind of shock isolating pedestal brick is mixed fixing structure, comprise ground collar tie beam 1, prefabricated pin key beam, upper shoulder beam 3, lower shoulder beam 8, upper sealing plate 4, lower shrouding 6, shock isolating pedestal 5, prefabricated pin key beam is divided into prefabricated pin key beam 2 and lower prefabricated pin key beam 7, the load bearing wall of collar tie beam 1 below, ground is divided into upper and lower two parts, is provided with shock isolating pedestal 5 between upper and lower two parts load bearing wall; Be arranged at intervals with prefabricated pin key beam hole on the load bearing wall of top, be inserted with prefabricated pin key beam 2 in the hole; Be arranged at intervals with prefabricated pin key beam hole on the load bearing wall of bottom, be inserted with lower prefabricated pin key beam 7 in the hole; Upper and lower prefabricated pin key beam 2,7 all stretches out the load bearing wall both sides; Many upper prefabricated pin key beams 2 that stretch out connect as one by upper shoulder beam 3, and many lower prefabricated pin key beams 7 that stretch out connect as one by lower shoulder beam 8; Be respectively arranged with upper sealing plate 4 and lower shrouding 6 between shock isolating pedestal 5 and the upper and lower shoulder beam 3,8.Wherein, prefabricated pin key beam is the cylindrical prefabricated pin key beam of concrete filled steel tube, prefabricated pin key joist steel thickness of pipe wall 4~5mm, and external diameter is 200mm, steel pipe length is that the load-bearing wall thickness adds 120mm.It is as follows that it installs support and change method:
Comprise the steps:
Step 1: excavation foundation;
Step 2: select OB-255A diamond water to bore auger, the top load bearing wall below brick mix structure ground collar tie beam 1 is opened prefabricated pin key beam hole, and the diameter that punches is 230mm;
Step 3: install prefabricated pin key beam 2, in the space, pour into A level modified epoxy structure glue behind the location, guarantee prefabricated pin key beam and body of wall close contact;
Step 4: shoulder beam 3 on the perfusion steel concrete makes it reliably be connected with upper prefabricated pin key beam 2;
Step 5: adopt outsourcing C30 concrete to carry out underpin 9;
Step 6: select OB-255A diamond water to bore auger, open prefabricated pin key beam hole at the bottom load bearing wall, the diameter that punches is 230mm;
Step 7: lower prefabricated pin key beam 7 is installed, in the space, is poured into A level modified epoxy structure glue behind the location, guarantee prefabricated pin key beam and body of wall close contact;
Step 8: shoulder beam 8 under the perfusion steel concrete makes it reliably be connected with lower prefabricated pin key beam 7;
Step 9: 8 on beam of shoulder is opened and shock isolating pedestal 5 is installed and is beaten the hole of building upper sealing plate 4 and lower shrouding 6 under steel concrete shoulder beam 3 and steel concrete;
Step 10: shock isolating pedestal 5 is installed and is built upper sealing plate 4 and lower shrouding 6;
Step 11: take on the continuous body of wall of 8 on beam on the cutting disassembling steel concrete under shoulder beam 3 and the steel concrete, separate the contact of upper and lower part wall body structure, generate Seismic Isolation of Isolation Layer;
Step 12: the pipeline that changes between Seismic Isolation of Isolation Layer is flexible the connection by former rigid connection;
Step 13: build passage and inspection eye that shock isolating pedestal 5 is safeguarded and changed.
More than be an exemplary embodiments of the present invention, enforcement of the present invention is not limited to this.