| In recent years, the research of some scholars and experts on rebar technology at home and abroad mainly focus on the bond slip, study on the seismic performance of the frame structure of organic adhesive anchorage has been carried out, but the inorganic adhesive tensile littleresearch on seismic performance of parts. So research of the anchor connection after theseismic performance of inorganic glue will provide theoretical guidance for the futureengineering application and improve the relevant specification.The first of the pull-out test under the condition of normal temperature and after the elevated temperature test of bearing capacity of the inorganic glue after the anchor connection,observed the destruction shape after drawing, analyzes the relationship between the ultimatetensile bearing capacity of drawing parts. The experimental results show that: under the condition of normal temperature, anchorage failure forms are all reinforced necking or neckingand concrete tapered composite failure mode; the anchorage depth is 15d, the pull-out forceis able to meet the requirements of. After the high temperature test pieces in the anchorage depth is 15d or 22d, after high temperature drawing force is at room temperature arereduction of more than 50%; however, when the anchorage depth reaches 22d, to meet the basic drawing design value of bearing capacity of drawing after high temperature.In this paper, by means of a RC frame with other bar frame of the full-scale model t est, the study of each specimen failure pattern, bearing under low cyclic loading capacit y, hysteretic curves, skeleton curves, ductility, energy dissipation and degradation curve per formance.Through comparative test draws the following conclusion:(1) Four frames in different failure patterns under quasi static, with Inorganic adhesiv eanchorage beam column specimens column roots and substrate interface obviously rifting,be am and column anchorage concrete at the cone damage occurs, reinforced obviouslyslippag e. The specimen of inorganic glue beam anchorage, crushing the column rootoccurrence da mage of concrete, rebar reinforced beam column at the obvious pulled out.Organic gel colu mn beam specimen, the root of the column of concrete was crushed, beam column rebar s lippage at the bar.(2)In terms of bearing capacity:ZJ specimen limit bearing capacity, compared to th e specimen ZJ, YJ-LZ, WJ-L, WJ-LZ of the ultimate bearing capacity were decreased by 1%,18.3%,31.6%, that bar has an effect on the ultimate bearing capacity of the structur e, and the effects of inorganic glue maximum. Using organic adhesive bar specimen is almo st equal to the entirecast specimen, can think of organic adhesive specimen can satisfy the 1 imit bearing capacity requirements, and the inorganic glue bar slightly inferior to ZJ and Y J-LZ specimen, the ultimate bearing capacity of the poor.(3) In the hysteresis curve:ZJ hysteretic curve is the most full, YJ-LZ, WJ-L are in th e WJ-LZ specimen, hysteretic curves of the worst, there are obvious "pinching" phenomeno n, the ultimate load by reverse S type into type Z, bar appears obvious slip. The seismic pe rformance of ZJ test pieces of the best, WJ-L specimen, specimen YJ-LZ in WJ-LZspecime ns after sequentially, the seismic performance of the worst.(4)In the energy dissipation:ZJ, WJ-L, YJ-LZ, WJ-LZ of each specimen on the ultima te load of the hysteresis loop area are decreased, indicating that the energy absorption stru cturereduced capacity. WJ-LZ tried the energy dissipation coefficient and WJ-L specimen s showed little difference, the difference is about ZJ samples of 72.9% and 80%, showed that the two arevery good energy absorption capacity. Specimen YJ-LZ energy consumpt ion coefficient of about ZJ samples of 62.3%, with WJ-L, WJ-LZ was slightly lower, inor ganic adhesive specimenenergy than the organic adhesive specimen is better. |
PDF Full Text Request