CN104594392A - Self-supply glass bead-graphite base sliding isolation system and method - Google Patents

Abstract

Self-replenishment glass bead-graphite foundation sliding seismic isolation system and method, the limit hole steel bar is located at the center of the limit hole, one end is anchored in the lower beam of the foundation, the other end passes through the limit hole and penetrates the upper beam of the foundation, and is placed in the limit hole The position hole is filled with fine sand in the part of the lower beam of the foundation; between the two limit holes, a trumpet-shaped groove for placing the lead pipe is reserved. After the concrete of the lower beam of the foundation reaches a certain strength, the lead pipe is installed in the trumpet-shaped groove Fill the lead tube with a mixture of glass beads and graphite; after the concrete of the lower beam of the foundation reaches a certain strength, lay a glass bead-graphite rolling shock-isolation layer on the surface of the lower beam of the foundation; on the upper beam of the foundation, two lead tubes- In the middle of the glass bead-graphite energy-dissipating and shock-absorbing device; after the beam on the foundation reaches a certain strength, a wall is built on top of it to form a shock-isolation system with a self-replenishing glass bead-graphite foundation sliding shock-isolation system.

Description

Self-supply glass bead-graphite base sliding vibration isolation system and its method

technical field

The invention relates to a self-replenishment type glass bead-graphite foundation sliding shock-isolation system and its method and production method, belonging to the field of building shock-isolation and disaster reduction.

Background technique

my country has a vast territory and a large population. Most of the buildings are located in earthquake zones. Most of the multi-storey buildings are masonry structures or frame-filled wall structures, which have poor earthquake resistance. On May 12, 2008, the magnitude 8.0 Wenchuan earthquake caused 16 provinces (municipalities, autonomous regions), more than 417 counties (cities, districts), 4,624 towns, and 46,574 villages in Sichuan, Gansu, Shaanxi, and Chongqing to be affected to varying degrees. The affected area was about 440,000 km ² . In this earthquake, 69,227 people were killed, 374,643 people were injured, and 17,923 people were missing. The direct economic loss amounted to 845.1 billion yuan. The magnitude 7.1 earthquake in Yushu caused about 10% of the population in the disaster area to be injured or injured, and low and multi-storey buildings were severely damaged.

Shock-isolation technology, with simple concept, obvious effect and stable performance, has become one of the most widely used shock-absorbing means at present. So far, the seismic isolation bearings used in 5000 seismic isolation buildings around the world are basically laminated steel plate rubber bearings, but this kind of bearing is not suitable for economical and relatively weak technology due to its expensive price and complicated construction technology. Shock isolation and shock absorption of house buildings in vast villages and towns. Therefore, research and development of economical, practical, convenient construction, and new technologies for isolation of villages and towns in economically underdeveloped areas has become an urgent need for projects. The present invention proposes a self-replenishment type glass bead-graphite base sliding shock-isolation system and its method, which has triple functions of shock-isolation, energy dissipation and position limiting. It can ensure that the house will not be damaged in a small earthquake, safe in a moderate earthquake, and not collapsed in a major earthquake, and has low cost and convenient construction, and can be used in villages and towns with underdeveloped economies.

Contents of the invention

The purpose of the present invention is to provide a self-supply glass bead-graphite foundation sliding isolation with the advantages of economy and applicability, convenient construction, good durability, etc., which can ensure that the house is not damaged by small earthquakes, safe in moderate earthquakes, and not collapsed in large earthquakes. The system and method can effectively solve the problem of low earthquake resistance and disaster prevention capacity of village and town buildings.

The technical scheme that the present invention adopts is as follows:

Self-replenishment glass bead-graphite base sliding vibration isolation system, the system includes foundation upper and lower beam subsystem, lead pipe-glass bead-graphite energy dissipation and shock absorption control subsystem, glass bead-graphite rolling vibration isolation layer subsystem, glass bead Graphite isolation layer self-replenishment system, limit reinforcement control subsystem;

Among them, the foundation upper and lower beam subsystem is composed of the foundation upper beam 1 and the foundation lower beam 2;

The lead tube-glass bead-graphite energy dissipation and shock absorption control subsystem is composed of glass beads 3, graphite 4, and lead tube 5;

The glass bead-graphite rolling isolation subsystem consists of glass bead 3, graphite 4, plastic film bag 6, rubber sealing strip 7 and cement mortar pointing 8;

The limit reinforcement control subsystem is composed of steel bars 9, PVC sleeves 10, glass beads 3, graphite 4, fine sand 11 and limit holes 12;

The self-replenishment system of the glass bead and graphite shock-isolation layer is composed of a recharge hole 13, glass beads 3 and graphite 4.

Make the lower beam 2 of the foundation on the upper part of the plain concrete cushion, and reserve a limit hole 12 symmetrically on both sides, the steel bar 9 is located at the center of the limit hole 12, one end is anchored in the lower beam 2 of the foundation, and the other end passes through the limit hole 12 penetrate the upper beam 1 of the foundation, expose the upper surface of the upper beam 1 of the foundation for a certain length, and fill the part of the limit hole located at the lower beam of the foundation with fine sand 11 to form a control subsystem of the limit steel bar; between the two limit holes, Reserve the trumpet-shaped groove 14 for placing the lead pipe 5. After the concrete of the lower beam of the foundation reaches a certain strength, install the lead pipe 5 in the trumpet-shaped groove 14, and fill the lead pipe with a mixture of glass beads 3 and graphite 4. Form a lead pipe-glass bead-graphite energy dissipation and shock-absorbing control subsystem; after the concrete of the lower beam of the foundation reaches a certain strength, lay a glass bead-graphite rolling shock-isolation layer on the surface of the lower beam of the foundation, and glass beads 3 and graphite 4 in a certain proportion Mix, be installed in the plastic film bag 6 and seal, the plastic film bag that glass bead 3, graphite 4 mixture are housed is spread flat on the surface of foundation lower beam 2, forms the glass bead-graphite rolling shock-isolation subsystem; -The upper beam 1 of the foundation is poured on the graphite rolling shock-isolation layer, and a limit hole 12 is reserved at the position corresponding to the lower beam 2 of the foundation. The limit steel bar passes through the hole to expose a certain length of the surface of the upper beam on the foundation. The limit hole 12 is filled with a mixture of glass beads 3 and graphite 4, which can form a glass bead and graphite shock-isolation layer supply system; reserve a trumpet-shaped groove at the lead pipe-glass bead-graphite energy dissipation and shock absorption place, so that the lead pipe can penetrate The beam on the foundation has a certain depth; on the beam on the foundation, in the middle of the two lead pipes-glass beads-graphite energy dissipation and shock-absorbing devices, a supply hole 13 is reserved, and the mixture of glass beads 3 and graphite 4 is filled in the supply hole to form a glass Self-replenishment system of bead-graphite shock-isolation layer; after the beam on the foundation reaches a certain strength, a wall is built on top of it to form a self-replenishment glass bead-graphite base sliding shock-isolation system, which has the functions of shock isolation and energy dissipation , Triple function of limit, the glass bead-graphite shock-absorbing layer can be self-supplied during a large earthquake, which can ensure that the house will not be damaged in a small earthquake, safe in a moderate earthquake, and will not collapse in a large earthquake, and the cost is low and the construction is convenient. developed rural areas.

The sub-system of the upper and lower beams of the foundation is composed of the upper beam 1 of the foundation and the lower beam 2 of the foundation, both of which are made of reinforced concrete, and a limit hole 12 is reserved in the upper and lower beams of the foundation, a supply hole 13 of the glass bead graphite shock-isolation layer, Lead pipe-glass beads-graphite energy-dissipating shock-absorbing trumpet-shaped groove 14.

The lead pipe-glass bead-graphite energy-dissipating and shock-absorbing control subsystem is composed of lead pipe 5, glass bead 3 and graphite 4, wherein the diameter of the glass bead can be 3mm, 4mm, 5mm, etc., and the specific diameter can be determined by the building. The number of layers, structural system and required friction coefficient are determined by calculation; graphite is ordinary graphite powder, the smaller the fineness, the better, and the specific fineness standard should be determined according to the importance of the project and the required friction coefficient; the lead pipe wall The thickness is not less than 3mm, and the outer diameter of the lead pipe is not less than 50mm; the lead pipe is filled with a mixture of glass beads 3 and graphite 4; the total length of the lead pipe is 150mm, one end is anchored 50mm inside the foundation beam, and the other end is anchored 50mm inside the foundation beam, The middle 50mm is a free and unconstrained section (10mm of which is the position of the glass bead and graphite shock-isolation layer, and 20mm at both ends are located in the upper and lower beams of the foundation. The 20mm free section of this section is realized by reserving a horn-shaped groove 14). During the earthquake, the upper and lower beams of the foundation move along the glass bead graphite isolation layer, and the free section of the lead pipe is sheared. Due to the strong deformation capacity of the lead pipe, the seismic energy is dissipated through deformation under the shear load to reduce energy consumption. As the number of deformations increases, the lead pipe should not be cut or broken, and the glass beads and graphite in the lead pipe will flow out to the glass bead and graphite isolation layer. The loss of the glass bead graphite is caused, so as to realize the replenishment of the glass bead graphite rolling shock-isolation layer.

The glass bead-graphite rolling shock-isolation layer subsystem, the glass bead-graphite rolling shock-isolation layer subsystem is composed of glass beads 3 and graphite 4; the diameter of glass beads can be 3mm, 4mm, 5mm, etc., and the specific diameter can be determined by the number of building layers, The structural system and the required friction coefficient are determined by calculation; graphite is ordinary graphite powder, the smaller the fineness, the better, the specific fineness standard should be determined according to the importance of the project and the required friction coefficient, glass beads 3 and graphite 4 The volume ratio of glass beads is determined by experiments based on the packing density and packing porosity of glass beads. The glass bead-graphite isolation layer system is located between the upper beam 1 of the foundation and the lower beam 2 of the foundation. The thickness of the isolation layer is preferably 10-20mm; In the plastic film bag 6, then lay on the surface of the lower beam 2 of the foundation, the thickness of the glass bead graphite shock-absorbing layer.

The self-replenishment system of the glass bead and graphite shock-isolation layer is composed of glass beads 3, graphite 4 and a replenishment hole 13. The replenishment hole 13 is reserved in the beam on the foundation, with a diameter of 80mm and the same height as the beam on the foundation. It is filled with a mixture of glass beads 3 and graphite 4, and the ratio of the two is the same as that of the glass bead-graphite rolling shock-isolation layer subsystem. This system can supplement the glass bead graphite in the shock-isolation layer under the action of an earthquake, and the loss when the upper and lower beams of the foundation slide along the shock-isolation layer, so as to keep the shock-isolation effect of the shock-isolation layer from being weakened.

The limiting steel bar control subsystem is composed of a steel bar 9 , a PVC sleeve 10 , fine sand 11 , a limiting hole 12 , glass beads 3 and graphite 4 . One end of the steel bar 9 passes through the limit hole 12 of the lower beam of the foundation, and is anchored to the lower beam of the foundation, and the other end extends out of the limit hole 12 of the upper beam of the foundation and exceeds a certain length on the upper surface of the upper beam of the foundation, and threads are put on the protruding part. It is convenient for later fixed connection; place a steel plate 15 on the upper surface of the limiting hole, reserve a circular hole 16 in the middle of the steel plate, the diameter of the circular hole 16 is slightly larger than the diameter of the steel bar 9, the steel plate 15 is square, and the side length is 20mm larger than the diameter of the limiting hole 12 Place a rigid spacer 17 on the steel plate 15, and place a rubber spacer 18 on the top of the rigid spacer. The thickness of the rubber spacer 18 is 20mm, so that the steel bar 9 can play the role of deformation self-adaptation in the stress deformation process. , use a nut 19 on the rubber gasket 18 to fix the steel bar 9 to prevent the upper beam 1 from being pulled out from the upper part of the steel bar during the earthquake, so as to prevent the structure from overturning and collapsing; Buried PVC casing 10 is formed, and the inner diameter of the casing is 80 mm; fine sand 11 is filled in the limit hole 12 of the lower beam 2 of the foundation, and the steel bar 9 rubs against the fine sand during an earthquake to play the role of energy dissipation and shock absorption; The beam limit hole 12 is filled with a mixture of glass beads 3 and graphite 4. When an earthquake occurs, the foundation beams will shift each other, and the glass beads and graphite mixture in the foundation beam 1 can replenish the loss of the glass beads and graphite rolling shock-isolation layer; Under the action, when the stagger displacement of the upper and lower beams of the foundation is greater than the diameter of the limiting hole 12, the reinforcing bar 9 is blocked by the limiting hole, so as to avoid the excessive relative displacement of the upper and lower beams of the foundation and the collapse of the superstructure.

The above is a typical embodiment of the present invention, and the practice of the present invention is not limited thereto.

The self-supply glass bead-graphite base sliding shock-isolation system of the present invention consists of foundation upper and lower beam subsystems, lead pipe-glass bead-graphite energy dissipation and shock-absorbing control subsystem, glass bead-graphite rolling shock-isolation layer subsystem, glass The self-replenishment system of the bead-graphite shock-isolation layer and the control subsystem of the limit steel bar are composed. It has multiple functions such as shock isolation, energy consumption, energy dissipation and shock absorption, deformation self-adaptation, limit, self-supply of glass bead and graphite shock-isolation layer, etc., with low cost and simple construction. The glass bead-graphite shock-absorbing layer can be self-supplied during a large earthquake, which can ensure that the house will not be damaged in a small earthquake, safe in a moderate earthquake, and will not collapse in a large earthquake.

Description of drawings

Figure 1 is a schematic diagram of a self-replenishing glass bead-graphite based sliding isolation system.

Fig. 2 is a schematic diagram of the control subsystem of the limit reinforcement.

Fig. 3 is a schematic diagram of the lead pipe-glass bead-graphite energy dissipation and shock absorption control subsystem.

Fig. 4 is a schematic diagram of the self-replenishment system of the glass bead and graphite shock-isolation layer.

Figure 5.1 is a schematic cut-away view of the glass bead-graphite rolling isolation layer subsystem.

Figure 5.2 is a schematic diagram of the cross-section of the glass bead-graphite rolling shock-isolation layer subsystem.

Figure 5.3 is a schematic diagram of the second cross-section of the glass bead-graphite rolling shock-isolation layer subsystem.

Fig. 6 is a schematic diagram of the plane layout of the self-replenishing glass bead-graphite base sliding vibration isolation system.

In the figure: 1- foundation upper beam, 2- foundation lower beam, 3- glass beads, 4 graphite, 5 lead pipe, 6 plastic film bag, 7- rubber sealing strip, 8- cement mortar pointing, 9- steel bar, 10 -PVC casing, 11-fine sand, 12-limit hole, 13-replenishment hole, 14-horn groove, 15-steel plate, 16-round hole, 17-rigid gasket, 18-rubber gasket, 19 - nuts.

Detailed ways

The present invention will be further described below in conjunction with specific embodiment:

As shown in Figures 1-6, the self-replenishment type glass bead-graphite base sliding shock-isolation system of the present invention includes the foundation upper and lower beam subsystem, lead pipe-glass bead-graphite energy dissipation and shock-absorbing control subsystem, glass bead -Graphite rolling seismic isolation layer subsystem, glass bead graphite isolation layer self-replenishment system, limit steel bar control subsystem; among them, the foundation upper and lower beam subsystem is composed of foundation upper beam 1 and foundation lower beam 2; lead pipe-glass beads- The graphite energy dissipation and shock absorption control subsystem is composed of glass beads 3, graphite 4, and lead pipe 5; the glass bead-graphite rolling vibration isolation subsystem is composed of glass beads 3, graphite 4, plastic film bag 6, rubber sealing strip 7 and cement mortar Pointing 8 is formed; the limit steel control subsystem is composed of limit steel 9, PVC casing 10, glass beads 3, graphite 4, fine sand 11 and limit holes 12; Holes 13, glass beads 3, and graphite 4 constitute. It is characterized in that the lower beam 2 of the foundation is made on the upper part of the plain concrete cushion, and a limit hole 12 is reserved, the steel bar 9 of the limit hole is located at the center of the limit hole 12, one end is anchored in the lower beam 2 of the foundation, and the other end passes through The limiting hole 12 runs through the upper beam 1 of the foundation, exposing a certain length of the upper surface of the upper beam 1 on the foundation, and filling the fine sand 11 in the part of the limiting hole located at the lower beam of the foundation to form a limiting steel bar control subsystem; in the two limiting holes In between, the trumpet-shaped groove 14 for placing the lead pipe 5 is reserved. After the foundation lower beam concrete reaches a certain strength, the lead pipe 5 is installed in the trumpet-shaped groove 14, and glass beads 3 and graphite 4 are filled in the lead pipe. The mixture of lead pipe-glass beads-graphite energy dissipation and shock absorption control subsystem is formed; after the concrete of the lower beam of the foundation reaches a certain strength, a rolling shock-isolation layer of glass beads-graphite is laid on the surface of the lower beam of the foundation, glass beads 3 and graphite 4 Mix according to a certain ratio, put it in a plastic film bag 6 and seal it, and spread the plastic film bag containing the mixture of glass beads 3 and graphite 4 on the surface of the lower beam 2 of the foundation to form a glass bead-graphite rolling vibration isolation subsystem; The upper beam 1 of the foundation is poured on the glass bead-graphite rolling shock-isolation layer, and a limit hole 12 is reserved at the position corresponding to the lower beam 2 of the foundation. The mixture of glass beads 3 and graphite 4 is filled in the limit hole 12 of the beam on the foundation, which can form a glass bead and graphite shock-isolation layer supply system; a trumpet-shaped groove is reserved at the lead pipe-glass bead-graphite energy dissipation and shock-absorbing place to make the lead The pipe penetrates into the foundation beam to a certain depth; on the foundation beam, between two lead pipes-glass beads-graphite energy dissipation and shock-absorbing devices, a supply hole 13 is reserved, and the supply hole is filled with a mixture of glass beads 3 and graphite 4 , to form a self-replenishment system of glass bead-graphite base isolation layer; after the upper beam on the foundation reaches a certain strength, a wall is built on top of it to form a base-isolation house with a self-replenishment glass bead-graphite base sliding isolation system. It has triple functions of shock isolation, energy dissipation, and limit. The glass bead-graphite shock isolation layer can be self-supplied during a large earthquake, which can ensure that the house will not be damaged in a small earthquake, safe in a moderate earthquake, and will not collapse in a large earthquake. The cost is low and the construction It is convenient and can be used in villages and towns with underdeveloped economy.

According to the technical solution of the present invention, the structure of the self-replenishing glass bead-graphite base sliding shock-isolation system is adopted, and its production sequence is as follows:

1. First, make a plain concrete cushion at the bottom of the building, bind steel bars and pour concrete on the upper part of the plain concrete cushion to form the foundation lower beam 2, and pre-embed PVC sleeves 10 in the foundation lower beam 2 to form a limit hole 12. Groove 14, the steel bar passes through the limit hole 12 and is anchored in the lower beam of the foundation, and the steel bar 9 is positioned at the center of the limit hole.

2. Fill the limit hole 12 of the lower beam 2 of the foundation with fine sand, keep the limit steel bar at the center of the limit hole, place the lead pipe 5 in the trumpet-shaped groove 14, and pour glass beads 3 into the lead pipe 5 , and a mixture of graphite 4 to form a lead pipe-glass bead-graphite energy-dissipating and shock-absorbing system.

3. After the concrete of the foundation lower beam 2 reaches a certain strength, lay the mixture of glass beads 3 and graphite 4 on the surface of the foundation lower beam. For the convenience of laying, put the glass beads 3 and graphite 4 in the plastic film bag 6 and lay them On the surface of the lower beam 2 of the foundation, ensure that the thickness of the glass bead graphite rolling shock-isolation layer is 10-20mm, and the specific thickness is determined according to the actual situation of the project; the construction of the shock-isolation layer can also be done by pasting the rubber sealing strip 7 around the edge of the lower beam 2 of the foundation first , Lay a mixture of glass beads 3 and graphite 4 in the space surrounded by rubber sealing strips to ensure that the thickness of the shock-absorbing layer is 10-20mm.

4. After the glass bead and graphite rolling shock-isolation layer is laid, the foundation is bound and reinforced and concrete is poured on it to form the foundation beam 1. Please reserve the foundation beam limit hole 12 and the trumpet-shaped groove 14 in the foundation beam. Replenishment hole 13; steel bar 9 passes through the limit hole 12 of the upper beam on the foundation and extends out of the surface of the upper beam 1 for a certain length; the limit hole 12 of the upper beam on the foundation is filled with a mixture of glass beads and graphite, and its ratio is the same as that of the glass bead graphite shock-isolation layer ; In the replenishment hole 13, the glass bead graphite is perfused, and its composition and ratio are once the same as those of the glass bead graphite shock absorber.

5. After the concrete of the upper beam on the foundation reaches a certain strength, install a steel plate 15 on the upper part of the limit hole 12 of the upper beam on the foundation. The round hole 16 of the steel plate 15 passes through the steel bar 9 and contacts the upper surface of the upper beam on the foundation. Put the rigid gasket 17 through Put the steel bar 9 on the upper part of the steel plate 15, pass the rubber gasket 18 through the steel bar 9, and place it on the upper part of the rigid pad 17, and finally screw the nut 19 on the threaded end of the steel bar 9, and the nut can only be in contact with the rubber gasket. Deform the rubber gasket.

6. After the construction of the upper and lower beams of the foundation is completed, and the seismic isolation layer and limit steel bars are installed, the construction of cement mortar pointing 8 shall be carried out at the position of the seismic isolation layer.

7. Build a wall or pour a shear wall on the upper part of the beam on the foundation to form a seismic isolation house with a self-supply glass bead-graphite foundation slip isolation system.

The above is a typical embodiment of the present invention, and the practice of the present invention is not limited thereto.

Claims (6)

1. self-adding formula bead-graphite sliding base isolated system, is characterized in that: this system comprises basis upper underbeam subsystem, lead pipe-bead-graphite energy-dissipating and shock-absorbing RACS, bead-graphite rolling shock insulation layer subsystem, bead graphite Seismic Isolation of Isolation Layer self-adding system, limit steel bar RACS;

Wherein, on basis, underbeam subsystem is made up of basic upper beam (1), basic underbeam (2);

Lead pipe-bead-graphite energy-dissipating and shock-absorbing RACS is made up of bead (3), graphite (4), lead pipe (5);

Bead-graphite rolling shock insulation subsystem is made up of bead (3), graphite (4), plastic film bag (6), rubber weather strip (7) and pointing with cement mortar (8);

Limit steel bar RACS is made up of reinforcing bar (9), PVC sleeve pipe (10), bead (3), graphite (4), fine sand (11) and spacing hole (12);

Bead graphite Seismic Isolation of Isolation Layer self-adding system by charging hole (13), bead (3), graphite (4) form;

Basic underbeam (2) is made on plain concrete cushion layer top, and reserve spacing hole (12) in bilateral symmetry, reinforcing bar (9) is positioned at spacing hole (12) center, one end is anchored in basic underbeam (2), the other end is through the through basic upper beam (1) of spacing hole (12), expose basic upper beam (1) upper surface certain length, and be positioned at basic underbeam at spacing hole be partially filled fine sand (11), form limit steel bar RACS; Between two spacing holes, the reserved tubaeform groove (14) placing lead pipe (5), after basic underbeam concrete reaches some strength, lead pipe (5) is arranged in tubaeform groove (14), and in lead pipe the mixture of filling glass pearl (3), graphite (4), form lead pipe-bead-graphite energy-dissipating and shock-absorbing RACS; After basic underbeam concrete reaches some strength, bead-graphite rolling shock insulation layer is laid on beam surface under the foundation, bead (3) and graphite (4) mix by a certain percentage, to be contained in plastic film bag (6) and to seal, by being equipped with bead (3), the plastic film bag of graphite (4) mixture is laid in the surface of basic underbeam (2), forms bead-graphite rolling shock insulation subsystem; Underpin upper beam (1) is watered on bead-graphite rolling shock insulation layer, and reserving spacing hole (12) with basic underbeam (2) corresponding position, limit steel bar is through this hole, expose basic upper beam surface certain length, the mixture of filling glass pearl (3), graphite (4) in basic upper beam spacing hole (12), can form bead graphite Seismic Isolation of Isolation Layer make-up system; Reserve tubaeform groove (14) at lead pipe-bead-graphite energy-dissipating and shock-absorbing place, make lead pipe (5) penetrate basic upper beam certain depth; At basic upper beam, in the middle of two lead pipe-bead-graphite energy-consuming shock absorbers, reserved charging hole (13), fills the mixture of bead (3), graphite (4) in charging hole, forms bead graphite Seismic Isolation of Isolation Layer self-adding system; After basic upper beam reaches some strength, masonry panel at an upper portion thereof, forms band self-adding formula bead-graphite sliding base isolated system.

2. self-adding formula bead according to claim 1-graphite sliding base isolated system, is characterized in that: on described basis, the basic upper beam (1) of underbeam subsystem, basic underbeam (2) are made by steel concrete.

3. self-adding formula bead according to claim 1-graphite sliding base isolated system, it is characterized in that: described lead pipe-bead-graphite energy-dissipating and shock-absorbing RACS, its bead (3) diameter desirable 3mm, 4mm, 5mm, concrete diameter can by building storey, and structural system and required friction factor size are determined as calculated; Graphite (4) is common graphite powder, and fineness is the smaller the better, and the concrete fineness standard adopted should be determined according to engineering importance and required friction factor size; Lead pipe (5) wall thickness is not less than 3mm, and external diameter is not less than 50mm; Lead pipe (5) one end is anchored at basic upper beam (1) interior 50mm, and the other end is anchored at basic underbeam (2) interior 50mm, and middle 50mm is freely without confinement section.

4. self-adding formula bead according to claim 1-graphite sliding base isolated system, it is characterized in that: the charging hole (13) of described bead graphite Seismic Isolation of Isolation Layer self-adding system is reserved in basic upper beam, diameter 80mm, height is identical with deck-molding on basis, in charging hole, fill the mixture of bead (3), graphite (4), both ratios are identical with bead-graphite rolling shock insulation layer subsystem.

5. self-adding formula bead according to claim 1-graphite sliding base isolated system, it is characterized in that: reinforcing bar (9) one end of described limit steel bar RACS is through basic underbeam spacing hole (12), be anchored in basic underbeam, the other end stretches out basic upper beam spacing hole (12) and exceeds basic upper beam (1) upper surface certain length, and screw thread on overlapping on extension, being convenient to the later stage is fixedly connected with; Steel plate (15) is placed at spacing hole upper surface, reserved circular hole (16) in the middle of steel plate, circular hole (16) diameter slightly larger than the diameter of reinforcing bar (9), steel plate (15) for square, the large 20mm of diameter of side ratio spacing hole (12); Steel plate (15) is first placed a rigid gasket (17), a rubber sheet gasket (18) is placed on rigid gasket top, rubber sheet gasket (18) thickness and 20mm are upper fixing by reinforcing bar (9) with a nut (19) at rubber sheet gasket (18); Spacing hole in grade beam is by pre-buried PVC sleeve pipe (10) formation in underbeam on basis, and casing inner diameter is 80mm; The spacing hole (12) of beam (2) is interior under the foundation fills fine sand.

6. the structure practice of self-adding formula bead-graphite sliding base isolated system, is characterized in that: its production order of this structure is as follows,

S1, first construction bottom make plain concrete cushion layer, at top assembling reinforcement concreting basis of formation underbeam (2) of plain concrete cushion layer, in beam (2), pre-buried PVC sleeve pipe (10) forms spacing hole (12) under the foundation, tubaeform groove (14), by reinforcing bar through in spacing hole (12) anchoring and basic underbeam, and reinforcing bar (9) is positioned the center of spacing hole;

Fine sand is filled in the spacing hole (12) of S2, under the foundation beam (2), and keep limit steel bar to be positioned at spacing hole center, lead pipe (5) is placed in tubaeform groove (14), in lead pipe (5), pour into the mixture of bead (3), graphite (4), form lead pipe-bead-graphite energy-dissipating and shock-absorbing system;

S3, after the concrete of basic underbeam (2) reaches some strength, the mixture of bead (3), graphite (4) is laid on beam surface under the foundation, in order to lay conveniently, bead (3), graphite (4) are contained in plastic film bag (6), be laid on basic underbeam (2) surface, ensure that bead graphite rolling shock insulation layer thickness is at 10-20mm, concrete thickness is determined according to engineering practice; The construction of Seismic Isolation of Isolation Layer can also adopt first the surrounding edge of beam (2) under the foundation to paste rubber weather strip (7), in the space of being encircled a city by rubber weather strip, lay the mixture of bead (3), graphite (4), ensure Seismic Isolation of Isolation Layer thickness 10-20mm;

S4, laid bead graphite rolling shock insulation layer after, make basic assembling reinforcement concreting basis of formation upper beam (1) in the above, reserved basic upper beam spacing hole (12) in basic upper beam (1), tubaeform groove (14), charging hole (13); Reinforcing bar (9) stretches out basic upper beam (1) surperficial certain length through basic upper beam spacing hole (12); In basic upper beam spacing hole (12), pour into bead graphite mixture, its ratio is identical with bead graphite Seismic Isolation of Isolation Layer; Bead graphite is poured into, its composition and ratio and bead graphite shock insulation Zeng Xiangtong in charging hole (13);

S5, after basic upper beam concrete reaches some strength, on the top of basic upper beam spacing hole (12), steel plate (15) is installed, the circular hole (16) of steel plate (15) contacts with basic upper beam upper surface through reinforcing bar (9), rigid gasket (17) is positioned over steel plate (15) top through reinforcing bar (9), by rubber sheet gasket (18) through reinforcing bar (9), and be placed in the top of rigid gasket, finally nut (18) is screwed in reinforcing bar (9) end of thread, nut contacts with rubber sheet gasket, and rubber sheet gasket can not be made to be out of shape;

S6, treat that basis upper underbeam construction is complete, after the installation such as Seismic Isolation of Isolation Layer, limit steel bar, carry out the construction of pointing with cement mortar (8) at isolation floor place;

S7, basic upper beam top masonry panel or build shear wall etc., form the isolation structure with self-adding formula bead-graphite sliding base isolated system.