CN104863380A - Overall replacement system for original building shock-insulation support and construction method - Google Patents
Overall replacement system for original building shock-insulation support and construction method Download PDFInfo
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- CN104863380A CN104863380A CN201510261417.8A CN201510261417A CN104863380A CN 104863380 A CN104863380 A CN 104863380A CN 201510261417 A CN201510261417 A CN 201510261417A CN 104863380 A CN104863380 A CN 104863380A
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Abstract
The invention relates to an overall replacement system for an original building shock-insulation support and a construction method. According to an overall replacement system structure, four temporary small foundations fall on a structural foundation and are evenly distributed on the periphery of the shock-insulation support, a section steel column is placed on each temporary small foundation, a steel cushion plate is placed on the top of each section steel column, a jack is placed on each steel cushion plate, another steel cushion block is placed on each jack, each another steel cushion block makes contact with the beam bottom, and it is guaranteed that a stress system is safe and reliable; one oil pressure pump is connected with the four jacks; four reversed beams are evenly distributed on the periphery of a beam column joint of an upper supporting pier of the shock-insulation support. In the replacement process of the shock-insulation support, jacking supporting, monitoring and high-pressure water lossless jet cutting are selected to be performed, and it is guaranteed that the construction process is safe, controllable, efficient, environmentally friendly, easy and fast.
Description
Technical field:
The present invention relates to the structural strengthening rebuilding construction technical field in civil engineering, be specifically related to a kind of in existing building shock isolating pedestal integral replacement system and construction method.
Background technology:
Subtract seismic isolation technology has recent two decades time in China's field of house buildings application, in order to the impact that earthquake disaster mitigation causes, subtract seismic isolation technology and widelyd popularize by some areas.But along with the development of technology and the perfect of specification, seismic isolation and reduction structure and the shock isolating pedestal material of a collection of application the earliest can not meet existing code requirement, in order to ensure structural safety, the shock isolating pedestal of original structure just needs to change.Ripe integral replacement method is not yet formed for current field of house buildings, so both ensured structural safety in the urgent need to one, integral replacement method economical and practical again.
Summary of the invention:
The object of the invention is to by constantly groping, formed and a set ofly improve in existing building shock isolating pedestal integral replacement system and construction method, make up the technological gap of this construction, jacking construction system of the present invention is safe, economical, easy, simultaneously in integral replacement work progress, effectively can carry out stress monitoring to total, ensure that overall structure is in a safe condition.
Object of the present invention is achieved through the following technical solutions:
One integral replacement system on existing building shock isolating pedestal, comprise 4 interim little bases, 4 steel columns, 4 reversed beams, 8 pieces of billets, 4 jack, 1 oil pressure pump, it is characterized in that: 4 interim little bases are dropped on architecture basics respectively, and divide equally in shock isolating pedestal surrounding, placement steel column on each interim little basis, each shaped steel capital places one piece of billet, billet is placed a jack, each jack is placed another steel cushion block, and every another steel cushion block of block contacts with at the bottom of beam, ensure that stress system is safe and reliable; 1 oil pressure pump is connected with 4 jack respectively; 4 reversed beams are evenly distributed on the surrounding of the bean column node of buttress on shock isolating pedestal.
Described interim little basic surrounding arranges a placing of reinforcement, top is arranged double two-way concrete slab mesh sheet, and concrete adopts grouting material to build.
Described steel plate washer adopts 500 ㎜ × 30, ㎜ × 500 ㎜ Q235 steel plates.
The Q235 steel plate piece welding that described steel column adopts 10 ㎜ thick, steel column external diameter 325 ㎜, wall thickness 10 ㎜, 400 ㎜ × 30, ㎜ × 400 ㎜ Q235 steel plates are welded at steel column two ends, and four of steel plate are welded triangle stiffener between angle with steel column.
Described jack adopts the self-locking jack of 200 tons, after jacking completes jack can manual operation it is extremely trivial, ensure that in construction of replacing process, structure stress is stablized.
The present invention also comprises 8 foil gauges and 2 dial gages, computer, 8 foil gauges are distributed in bean column node place different directions, be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, 2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, 8 foil gauges are connected with computer respectively with 2 dial gages, the stressed change of structure and vertical displacement in Real-Time Monitoring shock isolating pedestal construction of replacing process.
Utilize the construction method of described integral replacement system on existing building shock isolating pedestal, it is characterized in that carrying out according to the following steps:
(1) by Holistic modeling on existing building shock isolating pedestal, the stressing conditions of each node of beam column is specified;
(2) the greatest axis power of bearing is needed according to each strong point of step (1), determine the material of four steel columns and steel column two ends steel plate, specification, size and quantity, then prefabricated outside the venue, be transported to in-site installation and use on four interim little bases;
(3) according to the vertical load of step (1) each strong point, select four of corresponding tonnage self-locking jack and match with it can the oil pump of synchronization of jacking up, four self-locking jack are arranged on four steel columns respectively, and four self-locking jack are connected with oil pressure pump respectively;
(4) select shock isolating pedestal replacing order and batch, ensure the function of seismic resistance of original structure and structure stress balanced; Reinforce the bean column node of buttress on selected shock isolating pedestal: the surrounding of the bean column node of buttress is uniformly distributed 4 reversed beams on shock isolating pedestal, by beam and the newly-increased reversed beam acting in conjunction of original structure, bears the shearing formed between structure upper load and bracing members;
(5) on the base plate of the architecture basics that beam column lower support point is corresponding, surrounding builds four interim little bases, by the interim little basis of identical absolute altitude of constructing, ensures the planeness of steel column support baseboard and the uniformity of power transmission;
(6) be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, 2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, 8 foil gauges are connected with computer respectively with 2 dial gages, the stressed change of structure and vertical displacement in Real-Time Monitoring shock isolating pedestal construction of replacing process;
(7) after above-mentioned preparation is carried out, unclamp the set bolt of relevant shock isolating pedestal, start oil pressure pump, first push up in advance, by each for support system component stretching, ensure that in subsequent synchronisation jacking process, each beam load is identical; Classification is jacking progressively, jacking one-level, observes the monitored data of a computer, continues jacking, repeat this process, until reach load in situation without exception; After jacking terminates, by locked for each jack, then remove oil pressure pump;
(8) steric requirements under base area, selects the high-pressure water jet machine people of corresponding specification, carries out corresponding sump and drainage measure, safeguard procedures, and clear and definite concrete cutting-height; After high-pressure water jet machine people is in place, pressurizeed by high-pressure pump, the high-pressure water jet of generation is injected concrete surface; Water under high pressure produces a superpressure in concrete, and when its pressure exceedes concrete tensile strength, concrete occurs broken, and porous material concrete has very high comprehensive adhesion stress but stretching resistance is little about ten times; Pressure in penetration by water concrete pore produces; When interior pressure exceedes concrete stretching resistance, concrete is just abolished; By remote controller far distance controlled giant in cutting process, vertically movement, progressively carries out from side to pillar opposite side;
(9) remove former shock isolating pedestal, fixing lower embedded board, lower buttress construction, installs new shock isolating pedestal, fixing upper embedded board, upper buttress construction;
(10) release and bracing members are removed: after upper stub, lower stub concrete strength reach requirement, each steel column and self-locking jack are removed, move to the former shock isolating pedestal place of next group;
(11) step repeating above-mentioned (4) ~ (10) is constructed by criticizing, until all shock isolating pedestal has been replaced.
Tool of the present invention has the following advantages and beneficial effect:
(1) whole clear and definite by Force system, the present invention utilizes the reversed beam of capital root haunch to share shearing suffered by jacking process central sill, and beam bottom is effectively transmitted upper load by components such as billet, jack, steel column, temporary base;
(2) conveniently, work efficiency is high, construction is fast for exchange system installation of the present invention, disassembling section;
(3) reusable effective reduction construction cost;
(4) utilize the artificial intelligence of high-pressure water jet machine, green, harmless construction technology, can effectively protect former concrete structure;
(5) by carrying out stress monitoring to whole replacement process, can structural safety in effective guarantee replacement process.
Accompanying drawing illustrates:
Fig. 1 is reversed beam of the present invention construction schematic diagram.
Fig. 2 is interim little basic schematic of the present invention.
Fig. 3 is integrated support schematic diagram of the present invention.
Fig. 4 is monitoring arrangement diagram of the present invention.
Fig. 5 is schematic diagram after lower buttress excision of the present invention.
Fig. 6 is that displacement of the present invention completes schematic diagram.
In accompanying drawing: the structural column on 1-top, 2-reversed beam, 3-first floor floor, 4-first floor beam, the former shock isolating pedestal of 5-, stub on the former shock isolating pedestal of 6-, stub under the former shock isolating pedestal of 7-, 8-architecture basics, the interim little basis of 9-, billet at the bottom of 10-beam, billet under 11-jack, 12-self-locking jack, 13-jack self-locking fixer, 14-steel column upper cover plate, 15-steel column lower cover, 16-steel column, 17-steel column end stiffener plate, the new shock isolating pedestal of 18-, 19-basement ground, stub on the new shock isolating pedestal of 20-, stub under the new shock isolating pedestal of 21-, the main muscle of stub under 22-original structure.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention will be described in detail:
As Fig. 3, shown in Fig. 4, one integral replacement system on existing building shock isolating pedestal, comprise 4 interim little bases, 4 steel columns, 4 reversed beams, 8 pieces of billets, 4 jack, 1 oil pressure pump, 8 foil gauges and 2 dial gages, computer, computer is made up of display and data processor, 4 interim little bases are dropped on architecture basics respectively, and divide equally in shock isolating pedestal surrounding, placement steel column on each interim little basis, each shaped steel capital places one piece of billet, billet is placed a jack, each jack is placed another steel cushion block, and every another steel cushion block of block contacts with at the bottom of beam, guarantee stress system is safe and reliable, 1 oil pressure pump is connected with 4 jack respectively, 4 reversed beams are evenly distributed on the surrounding of the bean column node of buttress on shock isolating pedestal, 8 foil gauges are distributed in bean column node place different directions, be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, 2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, 8 foil gauges are connected with the data processor of computer respectively with 2 dial gages, shown by display, the stressed change of structure and vertical displacement in Real-Time Monitoring shock isolating pedestal construction of replacing process.Described interim little basic surrounding arranges a placing of reinforcement, top is arranged double two-way concrete slab mesh sheet, and concrete adopts grouting material to build.Described steel plate washer adopts 500 ㎜ × 30, ㎜ × 500 ㎜ Q235 steel plates.The Q235 steel plate piece welding that described steel column adopts 10 ㎜ thick, steel column external diameter 325 ㎜, wall thickness 10 ㎜, 400 ㎜ × 30, ㎜ × 400 ㎜ Q235 steel plates are welded at steel column two ends, and four of steel plate are welded triangle stiffener between angle with steel column.Described jack adopts the self-locking jack of 200 tons, after jacking completes jack can manual operation it is extremely trivial, ensure that in construction of replacing process, structure stress is stablized.
Construction method of the present invention is as follows:
(1) by Holistic modeling on existing building shock isolating pedestal, the stressing conditions of each node of beam column is specified;
(2) the greatest axis power of bearing is needed according to each strong point of step (1), determine the material of four steel columns and steel column two ends steel plate, specification, size and quantity, then prefabricated outside the venue, be transported to in-site installation and use on four interim little bases;
(3) according to the vertical load of step (1) each strong point, select four of corresponding tonnage self-locking jack and match with it can the oil pump of synchronization of jacking up, four self-locking jack are arranged on four steel columns respectively, and four self-locking jack are connected with oil pressure pump respectively;
(4) select shock isolating pedestal replacing order and batch, ensure the function of seismic resistance of original structure and structure stress balanced; Reinforce the bean column node of buttress on selected shock isolating pedestal, as shown in Figure 1, on shock isolating pedestal, the surrounding of the bean column node of buttress is uniformly distributed 4 reversed beams, by beam and the newly-increased reversed beam acting in conjunction of original structure, bears the shearing formed between structure upper load and bracing members;
(5) on the base plate of the architecture basics that beam column lower support point is corresponding, surrounding builds four interim little bases, as shown in Figure 2, by the interim little basis of identical absolute altitude of constructing, ensures the planeness of steel column support baseboard and the uniformity of power transmission;
(6) be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, as shown in Figure 4,2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, 8 foil gauges are connected with the data processor of computer respectively with 2 dial gages, shown by display, the stressed change of structure and vertical displacement in Real-Time Monitoring shock isolating pedestal construction of replacing process;
(7) after above-mentioned preparation is carried out, unclamp the set bolt of relevant shock isolating pedestal, start oil pressure pump, first push up in advance, by each for support system component stretching, ensure that in subsequent synchronisation jacking process, each beam load is identical; Classification is jacking progressively, jacking one-level, observes the monitored data of a computer, continues jacking, repeat this process, until reach load in situation without exception; After jacking terminates, by locked for each jack, then remove oil pressure pump;
(8) steric requirements under base area, selects the high-pressure water jet machine people of corresponding specification, carries out corresponding sump and drainage measure, safeguard procedures, and clear and definite concrete cutting-height; After high-pressure water jet machine people is in place, pressurizeed by high-pressure pump, the high-pressure water jet of generation is injected concrete surface; Water under high pressure produces a superpressure in concrete, and when its pressure exceedes concrete tensile strength, concrete occurs broken, and porous material concrete has very high comprehensive adhesion stress but stretching resistance is little about ten times; Pressure in penetration by water concrete pore produces; When interior pressure exceedes concrete stretching resistance, concrete is just abolished; By remote controller far distance controlled giant in cutting process, vertically movement, progressively carries out from side to pillar opposite side;
(9) remove former shock isolating pedestal, fixing lower embedded board, lower buttress construction, installs new shock isolating pedestal, fixing upper embedded board, upper buttress construction; As shown in Figure 5.
(10) release and bracing members are removed: after upper stub, lower stub concrete strength reach requirement, each steel column and self-locking jack are removed, as shown in Figure 6.Move to the former shock isolating pedestal place of next group;
(11) step repeating above-mentioned (4) ~ (10) is constructed by criticizing, until all shock isolating pedestal has been replaced.
Construction safety of the present invention is reliable, economical rationality, simple and quick, can the corresponding shortening shock isolating pedestal construction of replacing duration, have huge application value in shock insulation construction of replacing field.
Claims (7)
1. an integral replacement system on existing building shock isolating pedestal, comprise 4 interim little bases, 4 steel columns, 4 reversed beams, 8 pieces of billets, 4 jack, 1 oil pressure pump, it is characterized in that: 4 interim little bases are dropped on architecture basics respectively, and divide equally in shock isolating pedestal surrounding, placement steel column on each interim little basis, each shaped steel capital places one piece of billet, billet is placed a jack, each jack is placed another steel cushion block, and every another steel cushion block of block contacts with at the bottom of beam, ensure that stress system is safe and reliable; 1 oil pressure pump is connected with 4 jack respectively; 4 reversed beams are evenly distributed on the surrounding of the bean column node of buttress on shock isolating pedestal.
2. according to claim 1 on existing building shock isolating pedestal integral replacement system, it is characterized in that: described interim little basic surrounding arranges a placing of reinforcement, top is arranged double two-way concrete slab mesh sheet, concrete adopt grouting material build.
3. according to claim 1 on existing building shock isolating pedestal integral replacement system, it is characterized in that: described steel plate washer adopts 500 ㎜ × 30, ㎜ × 500 ㎜ Q235 steel plates.
4. according to claim 1 on existing building shock isolating pedestal integral replacement system, it is characterized in that: the Q235 steel plate piece welding that described steel column adopts 10 ㎜ thick, steel column external diameter 325 ㎜, wall thickness 10 ㎜, 400 ㎜ × 30, ㎜ × 400 ㎜ Q235 steel plates are welded at steel column two ends, and four of steel plate are welded triangle stiffener between angle with steel column.
5. according to claim 1 on existing building shock isolating pedestal integral replacement system, it is characterized in that: described jack adopts the self-locking jack of 200 tons.
6. according to claim 1 on existing building shock isolating pedestal integral replacement system, characterized by further comprising 8 foil gauges and 2 dial gages, computer, 8 foil gauges are distributed in bean column node place different directions, be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, 2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, and 8 foil gauges are connected with computer respectively with 2 dial gages.
7. utilize the construction method of the described integral replacement system on existing building shock isolating pedestal of one of claim 1-6, it is characterized in that carrying out according to the following steps:
(1) by Holistic modeling on existing building shock isolating pedestal, the stressing conditions of each node of beam column is specified;
(2) the greatest axis power of bearing is needed according to each strong point of step (1), determine the material of four steel columns and steel column two ends steel plate, specification, size and quantity, then prefabricated outside the venue, be transported to in-site installation and use on four interim little bases;
(3) according to the vertical load of step (1) each strong point, select four of corresponding tonnage self-locking jack and match with it can the oil pump of synchronization of jacking up, four self-locking jack are arranged on four steel columns respectively, and four self-locking jack are connected with oil pressure pump respectively;
(4) select shock isolating pedestal replacing order and batch, ensure the function of seismic resistance of original structure and structure stress balanced; Reinforce the bean column node of buttress on selected shock isolating pedestal: the surrounding of the bean column node of buttress is uniformly distributed 4 reversed beams on shock isolating pedestal, by beam and the newly-increased reversed beam acting in conjunction of original structure, bears the shearing formed between structure upper load and bracing members;
(5) on the base plate of the architecture basics that beam column lower support point is corresponding, surrounding builds four interim little bases, by the interim little basis of identical absolute altitude of constructing;
(6) be sticked at the bottom of the near-end beam of beam 2 foil gauges, beam near-end beam side be sticked 2 foil gauges, beam far-end beam at the bottom of be sticked 1 foil gauge, beam be sticked 1 foil gauge and reversed beam failure line of far-end beam side to be sticked 2 foil gauges, 2 dial gages are arranged on symmetric position between shock isolating pedestal upper and lower embedded board, 8 foil gauges are connected with computer respectively with 2 dial gages, the stressed change of structure and vertical displacement in Real-Time Monitoring shock isolating pedestal construction of replacing process;
(7) after above-mentioned preparation is carried out, unclamp the set bolt of relevant shock isolating pedestal, start oil pressure pump, first push up in advance, by each for support system component stretching, ensure that in subsequent synchronisation jacking process, each beam load is identical; Classification is jacking progressively, jacking one-level, observes the monitored data of a computer, continues jacking, repeat this process, until reach load in situation without exception; After jacking terminates, by locked for each jack, then remove oil pressure pump;
(8) steric requirements under base area, selects the high-pressure water jet machine people of corresponding specification, carries out corresponding sump and drainage measure, safeguard procedures, and clear and definite concrete cutting-height; After high-pressure water jet machine people is in place, pressurizeed by high-pressure pump, the high-pressure water jet of generation is injected concrete surface; Water under high pressure produces a superpressure in concrete, and when its pressure exceedes concrete tensile strength, concrete occurs broken, and porous material concrete has very high comprehensive adhesion stress but stretching resistance is little about ten times; Pressure in penetration by water concrete pore produces; When interior pressure exceedes concrete stretching resistance, concrete is just abolished; By remote controller far distance controlled giant in cutting process, vertically movement, progressively carries out from side to pillar opposite side;
(9) remove former shock isolating pedestal, fixing lower embedded board, lower buttress construction, installs new shock isolating pedestal, fixing upper embedded board, upper buttress construction;
(10) release and bracing members are removed: after upper stub, lower stub concrete strength reach requirement, each steel column and self-locking jack are removed, move to the former shock isolating pedestal place of next group;
(11) step repeating above-mentioned (4) ~ (10) is constructed by criticizing, until all shock isolating pedestal has been replaced.
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| CN105464398A (en) * | 2015-12-23 | 2016-04-06 | 江苏鼎达建筑新技术有限公司 | PLC intelligent synchronous jacking unloading construction device used for reinforcing concrete independent column |
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| CN106869518B (en) * | 2017-03-21 | 2019-06-14 | 中国建筑标准设计研究院有限公司 | Shock isolating pedestal jacking apparatus and the construction method for replacing shock isolating pedestal |
| CN106869518A (en) * | 2017-03-21 | 2017-06-20 | 中国建筑标准设计研究院有限公司 | The construction method of shock isolating pedestal jacking apparatus and replacing shock isolating pedestal |
| CN108678411A (en) * | 2018-06-06 | 2018-10-19 | 新兴铸管股份有限公司 | A kind of workshop exempts to tear joist column method open |
| CN109838114A (en) * | 2019-04-01 | 2019-06-04 | 吉林建筑大学 | Reinforced concrete structure inversely removes temporary support conversion equipment and its operating method |
| CN109838114B (en) * | 2019-04-01 | 2024-01-26 | 吉林建筑大学 | Reinforced concrete structure reverse dismantling temporary support conversion device and operation method thereof |
| CN110512666A (en) * | 2019-07-18 | 2019-11-29 | 上海建工一建集团有限公司 | The synchronous lifting of existing sinking old building and isolation structure and its construction method |
| CN110630029A (en) * | 2019-09-17 | 2019-12-31 | 山东建筑大学 | Wall body opening underpinning device and using method |
| CN110965594A (en) * | 2019-11-11 | 2020-04-07 | 同济大学 | Method for self-jacking to gradually replace grouped pile shock insulation support |
| CN110821207A (en) * | 2019-12-03 | 2020-02-21 | 上海宝冶集团有限公司 | Integral lifting method for small-sized existing structure |
| CN113756601A (en) * | 2021-09-27 | 2021-12-07 | 山西五建集团有限公司 | Frame column replacement and reinforcement construction method |
| CN113982302A (en) * | 2021-10-11 | 2022-01-28 | 河北省建筑科学研究院有限公司 | Undisturbed replacement construction method for existing seismic isolation building seismic isolation support |
| CN114411974A (en) * | 2022-03-02 | 2022-04-29 | 中国建筑第八工程局有限公司 | Building shock insulation support connecting node and construction method thereof |
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| CN104863380B (en) | 2017-01-25 |
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