Secondly, this paper made some theoretic researches on its engineering classfication and applicable scope for this technology ; then combining with project example, this paper carried out scheme design for this technology, and compared some different kinds of underpinning scheme and node and structure design, and put forward the method of " reinforcce steel bar through column " to build pile cap beam, " resistant bend and shear anchored reinforce steel bar " to strengthen column consolidation effect, and the method of " steel plate hoop " to build reinforcing bar connection of the foundation beam, etc. in the process of the consturction scheme research and implement, this paper synthetically elaborated the organizaton for project construction, put forward the construction technical measure of specific aim on the artificial pile, and pile cap beam, and underground adding layer and structure stabilization, and overall structure stabilization and so on. for this project, adopt reinforcing bar concrete to brace hole wall to ensure the safety of engineering in the artificial pile construction, use flexible connection catch to make the cage hoisting easier to simplify the construction process, use the method of earthwork statified symmetrical balance in the process of underground adding layer excavation
本文首先對于基礎托換與結構加固技術的目的和意義、國內外發展狀況進行了綜合闡述;其次對該項技術工程分類及適應范圍進行了理論上的分析研究;然後結合工程實例對該項技術進行了方案設計,對比幾種不同的托換方案和節點及構造設計,提出了「通筋穿柱法」做承臺梁, 「抗彎抗剪
錨筋法」強化柱加固效果, 「鋼板箍法」做地基梁鋼筋連接點等多項技術;在施工方案的研究和實施過程中,對于工程施工組織進行綜合闡述,並就人工挖
孔樁、承臺梁、地下加層及結構加固、整體結構穩定等專項施工方案提出有針對性的施工技術措施,人工挖
孔樁施工採用鋼筋砼護壁確保挖
孔樁的安全成型,使用柔性連接鉤進行鋼筋籠吊裝簡化施工工序;承臺梁施工採用梁主筋橫穿柱身化學膠
錨固等;地下加層綜合施工技術採用土方分層對稱平衡開挖,分段挖土做筏基結構自穩等;最後對于該工程實施后的效果分析,說明該項綜合施工技術的可行性。
Our product range covers drilling and demolition, direct fastening, diamond and anchoring systems, firestop and foam systems, installation, measuring and screw fastening systems as well as cutting and sanding systems
我們的產品范圍涵蓋鉆
孔與鑿破、直接固定、鉆石與安卡
錨栓系統、防火與發泡填縫系統、安裝、定位與螺絲固定系統,以及切割與砂磨系統。
Based on the research of influenced parameters on constant and varying depth solid web box girder before, the shear lag aroused by the parameters including width - span ratio, outstanding flange on base slab and the position of the tendons are further studied. the investigation show that shear lag values diminish along with the decease of width - span ratio and the departure from the symmetrical axis of anchor position, but outstanding flange is contrary to the former
在前人對等截面、變截面實腹箱梁剪力滯效應影響參數研究的基礎上,本文進一步對腹板開
孔的連續箱梁的寬跨比、底板翼緣伸出以及預應力
錨固位置改變等參數對箱梁剪力滯的影響進行研究。
Application of the point reaming technique to the pull - out anchor
定位擴
孔技術在抗拔
錨桿中的應用
In this method, spaces for plant growth are separated from the anchoring bar and shotcrete structures, but they have some mutual relations in following two points : firstly, establishments for plant growth can be fixed by using anchoring bars and shotcrete ; and secondly, water for plant growth can be partly supplied by drainage holes arranged in anchoring bar and shotcrete structures
在該方法中,供植物生長的空間(包括綠化槽、綠化盆等)與
錨噴結構是相互分離的,但在以下兩方面又有所聯系:第一,藉助于
錨桿和噴射混凝土來固定栽種植物所需的設施;第二,通過布置在
錨噴結構上的排水
孔為植物供水。
Based on the analysis of problems of previous bridge bearings after installation, for installation of the bearings of lhasa river bridge, the construction method of grouting epoxy resin mortar into anchor bolt holes of a bearing with the aid of potential energy of base plates of the bearing is used
摘要結合分析以往橋梁支座施工后留下的隱患,拉薩河特大橋支座採用
錨栓
孔灌注環氧樹脂砂漿,底板位能壓漿的安裝方法。
It is applied to drill heavy duty pretension anchor holes at side slope of water power station, railway or highway projects, to drill drainage holes and grouting pile holes on roof of tunnel gallery
適用於水電站鐵路公路邊坡大噸位預應力
錨固
孔排水
孔隧道口管棚
孔的施工,以及預防滑坡巖石坍塌等地質災害治理工程。
The latest constructing machine and the newest technology were adopted to ensure that the borehole is perpendicular to the rock face of roof and that the depth of borehole and the torsional moment of the anchoring bolt meet the design requirement
採用最新
錨桿施工機具及工藝,保證鉆
孔垂直於頂板巖面,
孔深及
錨桿扭矩滿足新型機械
錨桿的設計要求。
Through inversion analyzing the results of inspection and observation which was applied the multipoint displacement measures and the drilling anchor stress measures to the top surface in the xianggui gypsummine eastern workings, this article will attempt to propose the deformation law of stope terrane after the underwater mine area, which provided a reliable basis for taking measures to control the strata movement
摘要為了研究湘桂石膏礦的巖體變形規律,對該礦東采區頂板巖
孔多點位移計觀測和鉆
孔錨桿應力計檢測的結果進行綜合反演分析,提出了水下礦區開挖后采場巖層的變形規律,為採取有效措施控制巖層移動提供了依據。
This paper approaches reinforcement fabric cover, reinforcement fabric joint, reinforcement fabric embedded inserts, wall anchorage depth and wall joint form during the design of underground continuous walls, meanwhile, some problems affecting wall quality in the various sectors during construction are also discussed, including reinforcement fabric installation, groove bottom hole cleaning and quality testing equipment
本文對地下連續墻設計過程中的鋼筋網保護層、鋼筋網接駁、鋼筋網預埋件、墻體
錨固深度、墻體接頭形式以及施工過程中鋼筋網安裝、槽底清
孔、質量檢測設備等各個環節中影響墻體質量的一些問題進行了探討。
Yg - 80a construction drilling rig is a full hydraulic operated top drive power head drill. it is used to drill heavy duty pretension anchor hole at side slope of water power station, railway or highway projects, as well as drainage holes
Yg - 80a型
錨固工程鉆機是在yg - 80鉆機基礎上研製的,科學分配鉆機性能參數,使鉆機更適合巖石潛
孔錘鉆進跟管鉆進,同時兼顧土層合金回轉鉆進螺旋鉆進工藝。
In this paper, on the foundation of synthesizing engineering practice and study result of planted bar technique by chemistry glue on the domestic and international, embedded experiment study and theories analysis are done about bonded anchor behavior of chemistry planted bar anchorage behavior in this paper, the experimental results of 32 pulling resistance test ( meiya z3530 ) are given, considering some factors to affect bonded anchor behavior of chemistry planted bar such as the strength of concrete anchorage lengths diameter of steel bar and holes thickness of the protecting layer confecting circumstance of the hoop bar and quantity of construction especially which is very easy to be neglected and so on, and bonded anchor mechanism failure mode load carrying capacity and slide behavior are analyzed in - depth
本文在綜合國內外化學膠植筋技術的工程實踐和研究成果的基礎上,對化學植筋的粘結
錨固性能作了較深入的試驗研究和理論分析。文中通過32個化學膠(美亞z3530 )植筋試件的拉拔試驗研究,考慮混凝土強度、
錨固長度、鋼筋植筋、鉆
孔孔徑、保護層厚度、箍筋配製情況及施工質量等因素對植筋粘結性能的影響,特別是植筋的施工質量對粘結性能的影響是比較容易被忽視的因素,對化學植筋的粘結
錨固機理、破壞形態、承載力及滑移性能作了比較深入的剖析。
Works are accomplished as follows in this paper : firstly, according to the real condition of the fourth pier, through analysis of several generally - used anti - slipping schemes, new method has been put forward to substitute anchored column pile with the foundation of drilled shafts so as to prevent cofferdam from slipping
為此本文主要做了以下工作:首先根據4 #墩基礎的具體條件,通過對現有常用的幾種抗滑方案的綜合比較分析,提出了以工程本身的鉆
孔樁基礎代替
錨固柱樁防止鋼圍堰滑移的方案。
But now, succeasful application for the pre - stress anchor technique in the same case has been gained by use of one construction method of orifice ponding pouring in the deep excavation pit supporting in xiamen postal edifice, which can be taken for example on similar engineerings
在廈門郵電大廈探基坑支護的預應力錨桿工程中,採用一種「孔口堵水注漿」的施工方法,取得成功,可為類似工程提供借鑒。