When inserting data using SQLBulkCopy into an Azure SQL Database table I am getting an error message "The wait operation timed out"?

When I insert more than 80000 records into an Azure SQL Database table using the below code:

 IEnumerable<SqlBulkCopyColumnMapping> columnMapping;
      db.Database.ExecuteSqlCommand("truncate table dbo.Site");
                                    columnMapping = openXmlParse.GetSiteServiceColumnMappings();
                                    bulkCopy.BatchSize = 2000;
                                    bulkCopy.DestinationTableName = "dbo.Site";
                                    bulkCopy.WriteTableToServer(dt, SqlBulkCopyOptions.Default, columnMapping);
                                    db.sp_TrimTableColumns("Site");

In local DB it works fine but an exception is thrown when the code is run against Azure SQL Database.