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工程中使用强夯机会遇到哪些问题?

网址:http://www.sddhfjx.cn/   发布日期:2021-07-05 关注次数:
在土木建筑工程中,构成强夯地基处理工程缺点事端的原因大致有如下几种:夯成橡皮土。在含水量很大的黏土、粉质黏土、腐殖土、泥炭土等原状土上进行回填,或选用这些土料作回填土,当其被夯击时,外表构成一层硬壳,而土内水分不易浸透、发出,因此构成软塑状的橡皮土。
In civil engineering, the reasons for the defects of dynamic compaction foundation treatment engineering are as follows: rammed rubber soil. When the undisturbed soil such as clay, silty clay, humus soil and peat soil with large water content is backfilled, or these soil materials are selected as backfilled soil, when it is rammed, the surface of the soil forms a hard shell, but the water in the soil is not easy to soak and emit, so it forms a soft plastic rubber soil.
落锤不平稳,坑壁崩塌;分层厚度过大,或夯击能量不行,未到达有用影响深度。对附近建筑物发作晦气影响。因强夯引起较强的振荡,施工前未充分考虑对周围建筑物的晦气影响。
The drop hammer is not stable and the pit wall collapses; If the layer thickness is too large, or the tamping energy is not enough, the useful influence depth is not reached. Bad effects on nearby buildings. Due to the strong vibration caused by dynamic compaction, the bad influence on surrounding buildings was not fully considered before construction.
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当发作强夯地基处理工程缺点事端时,可选用如下办法进行处理。夯实填土时,应操控填土的含水量,防止在含水量过大的原状土、回填土上夯打;当地表有水时,应设排水沟,若有地下水时应降水至基底。可用干土、石灰粉等吸水资料均匀掺入土中下降含水量,或将橡皮土翻松、晒干、风干至更优含水量规模,再夯压密实。
When the defects of dynamic compaction foundation treatment project occur, the following methods can be selected for treatment. When tamping the fill, the water content of the fill should be controlled to prevent tamping on the undisturbed soil and backfill with excessive water content; When there is water on the surface, a drainage ditch should be set. If there is groundwater, it should be lowered to the base. The water absorption data such as dry soil and lime powder can be evenly mixed into the soil to reduce the water content, or the rubber soil can be turned loose, dried and air dried to a better water content scale, and then compacted.
夯打时按规则程序进行。落锤按规则做到平稳,夯位要准确。施工前应充分考虑周围建筑物与强夯地基施工的影响规模,采纳相应措施,如挖隔震沟等,或改用其他计划。
Ramming shall be carried out according to the rules and procedures. The drop hammer shall be stable according to the rules, and the tamping position shall be accurate. Before construction, the influence scale of surrounding buildings and dynamic compaction foundation construction should be fully considered, and corresponding measures should be adopted, such as digging isolation ditch, or using other plans.
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