SU872711A1

SU872711A1 - Multistorey earthqake-proof building

Info

Publication number: SU872711A1
Application number: SU792812377A
Authority: SU
Inventors: Гигла Шотаевич Чануквадзе; Михаил Александрович Марджанишвили; Лора Михайловна Марджанишвили; Реваз Шотаевич Маргалитадзе; Гурам Автандилович Джинчвелашвили
Priority date: 1979-08-29
Filing date: 1979-08-29
Publication date: 1981-10-15

Description

Изобретение относится к строитель^ ству многоэтажных зданий, в частности при возведении каркаснопанельных зданий и сооружений в сейсмических районах.The invention relates to the construction of multi-storey buildings, in particular during the construction of frame-panel buildings and structures in seismic areas.

Наиболее близким по технической сущности и достигаемому результату к изобретению является многоэтажное сейсмостойкое здание,включающее каркас из ригелей и колонн, диафрагмы жесткости с панелями заполнения.выполненными из отдельных вертикальных элементов, имеющих горизонтальные каналы, через которые пропущены тросы обжатия, и панели перекрытий fl ].The closest in technical essence and the achieved result to the invention is a multi-storey earthquake-resistant building, including a frame of crossbars and columns, stiffness diaphragms with filling panels made of separate vertical elements having horizontal channels through which compression cables are passed, and floor panels fl].

Недостатком данного решения является то, что при сейсмических;воздействиях с преобладанием в спектре колебаний грунта высокочастотных составляющих, вследствие развития резонансных эффектов амплитуды колебаний здания, возникает опасность, разрушения здания.The disadvantage of this solution is that under seismic impacts with a predominance of high-frequency components in the spectrum of soil vibrations, due to the development of resonance effects of the building vibration amplitude, there is a danger of building destruction.

Целью изобретения является обеспечение адаптации здания к сейсмическим воздействиям в широком диапазоне.The aim of the invention is to ensure the adaptation of the building to seismic effects in a wide range.

Указанная цель достигается тем. что в многоэтажном сейсмостойком зда⁵ нии, включающем каркас из колонн и ригелей, диафрагмы жесткости с панелями заполнения, выполненные с каналами, через которые пропущены тросы обжатия, и плиты перекрытий, ригели и панели заполнения выполнены с вертикальными сквозными каналами для пропуска тросов, причем последние заанкерены одним концом в фундаменте, а другим концом прикреплены к плите перекрытия верхнего этажа с помощью выключающейся связи.The specified goal is achieved by that. that in a multi-story earthquake-resistant building ⁵ , including a frame of columns and crossbars, stiffness diaphragms with filling panels made with channels through which compression cables are passed, and floor slabs, crossbars and filling panels are made with vertical through channels for passing cables, the latter anchored one end in the foundation, and the other end attached to the slab of the upper floor using a disconnecting connection.

Выключающаяся связь может быть выполнена в виде срывающихся анкеров обжатия.The disconnecting connection can be made in the form of tearing compression anchors.

На фиг. 1 изображено здание·, поперечный разрез: на фиг. 2 - срывающийся анкер, в плане; на фиг. 3 разрез А-А на фиг. 2. ,In FIG. 1 shows a building ·, cross section: in FIG. 2 - breaking anchor, in plan; in FIG. 3, section AA in FIG. 2.,

Многоэтажное сейсмостойкое здание состоит из каркаса 1, включающего колонны 2 и ригели 3, плит перекрытия 4 и диафрагм жесткости 5 с панелями заполнения 6. Панели заполнения 6 и ригели 3 выполнены с вертикальными сквозными каналами 7, через которые пропущены тросы обжатия 8,' закрепленные в фундаменте с помощью анкеров 9 и в плитах перекрытия 4 верхнего эта- ю жа с помощью срывающегося анкера< обжатия, ·.· . .·A multi-storey earthquake-resistant building consists of a frame 1, including columns 2 and crossbars 3, floor slabs 4 and stiffness diaphragms 5 with fill panels 6. Fill panels 6 and crossbars 3 are made with vertical through channels 7 through which compression cables 8 are passed, fixed in foundation with anchors 9 and in floor slabs 4 of the upper floor with a tearing anchor <compression, ·. ·. . ·

Анкер обжатия жестоко прикреплен к закладной .детали, установленой в плите перекрытия 4., и выполнен в ₁₅виде круглой шайбы со столиком в верхней части, на который оперта гайка винтового» . оголовка троса 8.The compression anchor is rigidly attached to the mortgage. Of the part installed in the floor slab 4. and is made in the form of a round washer ₁₅ with a table in the upper part on which the screw nut is supported. ” cable head 8.

При землетрясениях с преобладанием в спектре колебаний грунта высоко- ₂₀частотных составляющих, вследствие развития резонансных эффектов, амплитуды колебаний здания нарастают до порогового уровня, при достижении которого происходит срыв столика сры- ₂₅вающегося анкера обжатия . После срыва анкера периоды собственных колебаний здания резко возрастают. В связи с повышением периодов колебаний система уходит из резонансного режима и сейсмические нагрузки®значительно снижаются.During earthquakes with prevalence of high-frequency components _20, as a result of resonance effects, the amplitude of oscillations grow building to the threshold level at which the disruption occurs sry- table ₂₅ vayuschegosya anchor reduction in ground vibration spectrum. After the failure of the anchor, the periods of natural oscillations of the building increase sharply. Due to the increase in periods of oscillation, the system leaves the resonance mode and seismic loads® are significantly reduced.

После того, как панели заполнения 6 на какое-то время выключились из работы. здание начинает работать по „ _ 35 рамной схеме. При росте амплитуды колебаний панели заполнения 6 снова включаются в работу (ввиду существования сил сухого трения между последними и ригелями) и здание работает по рамной схеме с раскосами. Таким ⁴⁰образом, несущая способность сооружения уменьшается ненамного, а сейсмические силы значительно.After the filling panels 6 were turned off for some time. the building begins to work according to the „_ 35 frame scheme. With an increase in the oscillation amplitude, the filling panels 6 are again included in the work (due to the existence of dry friction forces between the latter and the crossbars) and the building works according to a frame diagram with braces. Thus, in ⁴⁰ ways, the bearing capacity of the structure is reduced only slightly, and seismic forces are significantly reduced.

Если произойдет землетрясение с преобладанием низкочастотных составу ляющих колебаний грунта, то резонансные эффекты не разовьются, поскольку при невыключившихся связях здание является жестким и частоты его собственных колебаний относительно велики.If an earthquake occurs with a predominance of low-frequency components of soil vibrations, then the resonance effects will not develop, since with disconnected connections the building is rigid and the frequencies of its own vibrations are relatively high.

Таким образом, ни в одном из возможных состояний здания не реализуется установившийся резонансный режим, т.е. изобретение обеспечизает адаптацию здания к сейсмическим воздействиям в широком диапазоне. аThus, in none of the possible building conditions does the steady-state resonance mode occur, i.e. the invention provides adaptation of the building to seismic impacts in a wide range. a

Claims

(54) MULTI-STORAGE SEISMIC RESISTANT BUILDING The invention relates to the construction of multi-storey buildings, in particular during the construction of frame-panel buildings and structures in seismic areas. The closest in technical essence and the achieved result to the invention is a multi-storey earthquake-resistant building, including a frame of bolts and columns, a diaphragm rigidity with filling panels made of separate vertical elements having horizontal channels through which the reduction is allowed, and panels overlap 1. The disadvantage of this solution is that with seismic effects, with high frequency frequencies prevailing in the soil vibrations spectrum, due to the development of resonant effects of the amplitude of oscillations of the building, there is a danger of destruction of the building. The aim of the invention is to provide adaptation of a building to seismic effects in a wide range. This goal is achieved by the fact that in a multi-storey earthquake-resistant building that includes a frame of columns and crossbars, stiffening diaphragms with filling panels, filled with Xalads, through which crimping cables are passed, and floor plates, crossbars and filling panels are filled with vertical through channels for the passage of cables, the latter are anchored by one end in the foundation, and the other end are attached to the floor slab of the upper floor by means of a switching off connection. The cut-off connection can be made in the form of breakdown anchors. Kah FIG. 1 shows a building-cross section: in FIG. 2 - broken anchor, in plan; in fig. 3 is a section A-A in FIG. 2. 3h A multistory seismic resistant building consists of frame 1, including columns 2 and girders 3, overlapping plates and stiffening diaphragms 5 with panels at full 6. Filling panels 6 and girders 3 are made with vertical pass-through channels 7 through which cables are passed squeeze 8, fixed in the foundation with the help of anchors 9 and in the slabs of the 4 upper floors, with the help of the squeezing anchorrag,; The aiker is crimped rigidly attached to the mortgage part installed in the slab 4., and made in the form of a round washer with a table in the upper part, on which the screw nut is supported). cable end 8 When earthquakes with a predominance of high frequency components in the ground oscillation spectrum, due to the development of resonant effects, the amplitudes of the building oscillations increase to a threshold level, when reaching which the breakdown anchor table collapses, building oscillations sharply are increasing. In connection with an increase in the periods of oscillations, the system leaves the resonant mode and the seismic loads are significantly reduced. After the filling panels have been turned off for some time, the building starts working according to the frame scheme. With an increase in the amplitude of oscillations, the filling panel B is put back into operation (due to the existence of dry friction forces between the latter and the bolts} and the building works in a frame pattern with braces. Thus, the bearing capacity of the structure is not reduced much, and the seismic forces are significant. 4 eecletration will occur with a predominance of the low-frequency components of ground vibrations, the resonance effects will not develop, because with non-switched connections the building is rigid and its natural vibration frequencies are relatively Thus, in none of the possible conditions of the building, the established resonant mode is realized, i.e., the invention provides for the adaptation of the building to the widest range of effects in a wide range. 1. Invention 1. Multi-storey seismic-resistant building, frame from columns and crossbars , stiffening diaphragms with filling panels, made with channels through which crimping cables are passed, and floor slabs, which are designed to adapt the building to seismic effects in a wide range azone, girders and panels filling formed with vertical through-channels DJiYa skipping rope, the latter zaankereshl odnnm end in the foundation and the other con ;; om shshte attached to overlap the upper deck via vyklyuchayuJ eyc.

2. The building is pop, 1, I distinguish it with the fact that the off links are made in the form of breaking compression anchors. Sources of education, taken into account during the examination 1, USSR Author's Certificate No. 512219.cl. Е 041Н 9/02, 9